CN102871644B - Slit lamp and information management system thereof - Google Patents
Slit lamp and information management system thereof Download PDFInfo
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- CN102871644B CN102871644B CN201210370873.2A CN201210370873A CN102871644B CN 102871644 B CN102871644 B CN 102871644B CN 201210370873 A CN201210370873 A CN 201210370873A CN 102871644 B CN102871644 B CN 102871644B
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Abstract
The invention discloses a slit lamp and an information management system thereof. The information management system comprises an image control device, an image processing device and a patient information management device. The patient information management device comprises a storage module and an information maintenance module connected with each other and further comprises a call trigger device and a call submodule. The call trigger device sends a call instruction to one of the image control device, the image processing device and the patient information management device. When the call instruction sent by the call trigger device to the image processing device is triggered, the call instruction is sent to the call submodule. The call submodule sends an image call instruction to the information maintenance module. The information maintenance module stores images, output from an imaging device, in a storage module in the preset way and calls a preset image stored in the storage module. The information management system can be used to control imaging, process images and manage patients' information, so that operation of the slit lamp is more facilitated, and operating efficiency is improved.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, especially relate to a kind of image information management system of slit lamp, also relate to a kind of slit lamp that comprises this image information management system.
Background technology
Slit lamp, also referred to as slit lamp microscope, is eye to be carried out to the apparatus of medical examination.
Please refer to Fig. 1, this figure is a kind of structure principle chart of slit lamp.This slit lamp comprises object lens 1, light-dividing device 4, eyepiece 2, imaging len 5 and imaging device 6.Light-dividing device 4 is between object lens 1 and eyepiece 2; Imaging device 6 is positioned at the side of light-dividing device 4, and imaging len 5 is between light-dividing device 4 and imaging device 6.Imaging device 6 comprises sensor and image acquisition device.
The operation principle of slit lamp is: the reflection ray of eye presumptive area projects light-dividing device 4 by object lens 1.Light-dividing device 4 is divided into Real Time Observation light and imaging light by the light of coming from object lens 1 projection: Real Time Observation ray cast is to eyepiece 2, and imaging light projects on the sensor of imaging device 6 by imaging len 5.Because Real Time Observation ray cast is to eyepiece 2, observer's eyes 3 can pass through the concrete condition of eyepiece 2 Real Time Observation eye presumptive areas, for the diagnosis of eye situation provides real time information.The sensor of imaging device 6 can be converted to data signal by the imaging light of projection, and this data signal is exported to image acquisition device; Image acquisition device can form image according to data signal.
In order to observe eye different depth situation, slit lamp is also provided with joystick, can control the position of object lens 1 by joystick, and then adjusts the regional location of the eye of observing, and determines better lesion region or the pathological changes situation of eye.For the ease of controlling, to obtain the image of the presumptive area of eye, slit lamp is also provided with the imaging control apparatus (not shown) being connected with the image acquisition device of imaging device 6, to form image in predetermined time and the moment.
In regular hour section, slit lamp can check personnel such as a lot of sufferers, is also provided with corresponding patient information management device for this reason.Patient information management device comprises memory module and maintenance of information module, and memory module stores image and patient's relevant information; By maintenance of information module, for image information and patient information are safeguarded, to guarantee corresponding between image and patient, facilitate the search of image and transfer.The concrete maintenance function of maintenance of information module can comprise: sets up image and image and patient's corresponding relation, patient information managed, patient's image is safeguarded, etc.
In order being more convenient for, to observe the image that imaging device 6 forms, more clearly to obtain the information of eye presumptive area, the suitable image processing apparatus of current general employing carries out respective handling to the image by being formed by imaging device 6.Like this, slit lamp is also provided with image processing apparatus, so that predetermined image is carried out to respective handling, to meet actual needs.
Current, imaging control apparatus, image processing apparatus and patient information management device three arrange respectively; Although can to a certain degree meet actual needs like this; But three arranges respectively and will make slit lamp operation very inconvenient; Such as: when application image blood processor is processed respective image, need to apply patient information management device and recall respective image, and then send respective image to image processing apparatus, recycling image processing apparatus is processed this image; This will affect treatment effeciency.Therefore the operating characteristics that, how to improve slit lamp is the current problem that solves of needing.
In addition, data width is the key factor that affects picture quality, and data width is wider, and picture quality is better; Therefore, in order to improve the dynamic range of image, guarantee the quality of the image of formation, the data width of the data signal of the sensor output of imaging device 6 can be provided with higher, generally can reach 12bit even higher.Due to general image processing apparatus and the lower data width (being generally 8bit) of image display device employing; Therefore, image acquisition device generally receives the data signal of the lower data width of acceptance; And then, during the data signal of image acquisition device receiving sensor output, generally the data low level in data signal can be abandoned to the data of a retention data high position.While being 12bit as the data width of the data signal in sensor output, image acquisition device, when receiving this data signal, will abandon the data of low 4bit, only retains the data of high 8bit.Due to discarded part divided data, will make the light and shade loss of detail of image, the quality of the image that impact forms, and then make the image forming provide information wrong, affect the accuracy of medical diagnosis.
Current, in slit lamp, joystick and imaging control apparatus are controlled respectively object lens 1 position and the imaging moment and time; In operation, joystick can make observer observe the image of a plurality of positions, when observer need to preserve the image of relevant position, need to by imaging control apparatus, control image acquisition device again, the image of presumptive area is gathered and preserved; Like this, in operating process, just need observer to carry out control operation at joystick and two parts of imaging control apparatus, make the control operation of slit lamp very inconvenient.
Summary of the invention
The present invention proposes a kind of information management system of slit lamp, utilize this information management system to may be controlled to picture, process image and managing patient information, and then can make the more convenient to operate of slit lamp, improve operating efficiency.
The present invention also provides a kind of slit lamp that comprises above-mentioned information management system.
An information management system for slit lamp, comprises imaging control apparatus, image processing apparatus and patient information management device, and described patient information management device comprises connected memory module and maintenance of information module, also comprises and calls flip flop equipment and sub-calling module; The described flip flop equipment that calls is connected with imaging control apparatus, image processing apparatus, patient information management device and sub-calling module respectively, and to one of imaging control apparatus, image processing apparatus and patient information management device, sends call instruction according to predetermined instruction; Described, when calling flip flop equipment and sending call instruction to described image processing apparatus, to described sub-calling module, send call instruction simultaneously; Described sub-calling module sends image call instruction according to call instruction to described maintenance of information module; Described maintenance of information module is connected with imaging device, will store in a predetermined manner memory module from the image of imaging device output; Also will be stored in the predetermined image in memory module according to image call instruction calls, and predetermined image is sent to image processing apparatus.
The present invention also provides a kind of slit lamp, comprises imaging len and imaging device, and described imaging device comprises sensor and image acquisition device, also comprises the information management system of foregoing slit lamp; Described imaging control apparatus is connected with described image acquisition device, and described imaging control apparatus is controlled image acquisition device according to call instruction; Described image acquisition device is connected with maintenance of information module, and described image acquisition device sends to described maintenance of information module by the image of collection after gathering image.
Wherein, described imaging device also comprises the conversion processing unit being connected between sensor and image acquisition device; Described conversion processing unit comprises the first converting unit, compression unit and the second converting unit that order is connected; Described the first converting unit is for being converted to the input data signal of the rgb format of sensor output the original data signal of yuv format; Described compression unit forms the Y information data of compression for the original Y information data of original data signal being carried out to Real-time and Dynamic compression, the data width of the Y information data of described compression is less than the data width of original Y information data; Described the second converting unit is for also changing by the Y information data combination of the U/V information data of original data signal and compression the outputting data signals that forms rgb format, and sending image acquisition device to, the data width of described outputting data signals is less than described input data signal width.
Wherein, also comprise photometry blood processor, described photometry blood processor comprises gradation conversion unit, filter element, Threshold segmentation point determining unit, authentication unit and the photometry determining unit that order is connected; Described gradation conversion unit is connected with described the first converting unit, for the data signal of the yuv format of the first converting unit output is converted to gray level image; Described filter element is for carrying out gaussian filtering by gray level image; Described threshold segmentation point determining unit travels through the gray level image after gaussian filtering according to maximum between-cluster variance, determine Intensity threshold Separation point; The triggering signal that can also send according to described authentication unit travels through according to maximum between-cluster variance predetermined gray level image, determines Intensity threshold Separation point; Described authentication unit, for according to definite luminance threshold cut-point, judges whether the part higher than luminance threshold cut-point has interference bright spot; If so, get rid of this interference bright spot, form predetermined gray level image, then to threshold segmentation point determining unit, send triggering signal; If not, determine that Intensity threshold Separation point is final Threshold segmentation point; Described photometry determining unit, for according to the described gray level image of final Threshold segmentation point traversal, obtains the average brightness value of the above part of final Threshold segmentation point; Described image acquisition device is connected with described photometry determining unit, and determines photometry acquisition parameter according to described average brightness value.
Wherein, also comprise photometry blood processor, described photometry blood processor comprises region selecting arrangement, data extraction device and the photometry determining unit that order is connected; Described region selecting arrangement is for selecting predetermined region as photometry base area; Described data extraction device is connected with the first converting unit, and extracts the destination image data corresponding with described photometry base area for the data signal of the yuv format in the first converting unit output; Described photometry determining unit is connected with described photometry determining unit, and for according to the mean flow rate of photometry base area described in the monochrome information data acquisition of destination image data; Described image acquisition device is determined photometry acquisition parameter according to described average brightness value.
Wherein, also comprise manipulation device, power set and imaging guide rail; Described imaging len is slidably mounted on imaging guide rail; Described power set drive described imaging len to move along imaging guide rail; Described manipulation device is connected with power set, for controlling power set.
Wherein, the joystick that also comprises the object lens position of controlling slit lamp; Described imaging control apparatus comprises infrared transmitter and the infrared remote receiver using by infrared transmission Signal cooperation; Described infrared transmitter is arranged on joystick, and described infrared transmitter comprises that touches a trigger element; Described infrared remote receiver is connected with described image acquisition device, and described image acquisition device triggers and starts according to the infrared signal of the reception of infrared remote receiver.
Wherein, also comprise display lamp and voice output unit; Described display lamp is connected with the touch trigger element of described infrared transmitter, and described touch trigger element is controlled display lamp; Described voice output unit is connected with infrared remote receiver, and triggers and start according to the infrared signal of the reception of infrared remote receiver; Or be connected with the touch trigger element of infrared transmitter, described touch trigger element is controlled voice output unit.
Wherein, imaging control apparatus also comprises central control unit and the first trigger mechanism; Described central control unit is connected with described image acquisition device, and described image acquisition device triggers and starts according to the control signal of central control unit; Described the first trigger mechanism comprises foot switch, and described the first trigger mechanism is connected with central control unit by USB interface, and described central control unit is converted to control signal by foot switch signal.
Wherein, described imaging control apparatus also comprises the second trigger mechanism, described the second trigger mechanism also comprises computer and input equipment, and according to input equipment, instruction sends triggering command to central control unit to described computer, and described central control unit is converted to control signal by triggering command; Described input equipment comprises mouse or/and keyboard.
Compared with prior art, in the information management system of slit lamp provided by the invention, except comprising imaging control apparatus, image processing apparatus and patient information management device, also comprise sub-calling module and call flip flop equipment; The described flip flop equipment that calls can send call instruction to one of imaging control apparatus, image processing apparatus and patient information management device according to predetermined instruction; Like this, by calling flip flop equipment, can, in information management system, call imaging control apparatus, image processing apparatus and patient information management device thrin; And when calling flip flop equipment and sending call instruction and trigger to image processing apparatus, to described sub-calling module, send call instruction described simultaneously; Described sub-calling module can send image call instruction to described maintenance of information module according to call instruction; Described maintenance of information module is used for according to image call instruction calls predetermined image, and predetermined image is sent to image processing apparatus; And then image processing apparatus can be processed predetermined image.Like this, by calling flip flop equipment, can call any in imaging control apparatus, image processing apparatus and patient information management device; Meanwhile, by sub-calling module, can automatically trigger the search of image and call; Do not need to start respectively.Like this, utilize this information management system to may be controlled to picture, process image and managing patient information, and then can make the more convenient to operate of slit lamp, improve operating efficiency.
Slit lamp provided by the invention comprises above-mentioned information management system, also has easy to operate benefit.
In further technical scheme, slit lamp also comprises the conversion processing unit being connected between sensor and image acquisition device; Described conversion processing unit comprises the first converting unit, compression unit and the second converting unit; Described the first converting unit is for being converted to the input data signal of the rgb format of sensor output the original data signal of yuv format, for compression monochrome information data provide prerequisite; Described compression unit forms packed data signal for the original data signal of yuv format being carried out to Real-time and Dynamic compression, in described packed data signal, the data width of monochrome information data is less than the data width of monochrome information data in described original data signal, can reduce like this data width of data signal integral body; Then, described the second converting unit, for by the conversion of packed data signal, forms the outputting data signals of rgb format, and sends image acquisition device to, and the data width of described outputting data signals is less than described input data signal width.Like this by abandoning image luminance information data, can reduce the width of data signal, reduce the data width of data signal, when receiving data signal, image acquisition device receives so complete outputting data signals, can not abandon color information, and then can retain image detail, guarantee the picture quality that image acquisition device forms.
In further technical scheme, also comprise photometry blood processor, by gradation conversion unit, filter element, Threshold segmentation point determining unit, authentication unit and photometry determining unit, can determine and select photometry acquisition parameter, improve the quality of the operating efficiency of slit lamp and the image of formation.
In further optional technical scheme, photometry blood processor comprises region selecting arrangement, data extraction device and photometry determining unit; By this photometry blood processor, can select neatly according to actual needs predetermined photometry base area, then take this photometry base area as basis formation average brightness value, then determine photometry acquisition parameter according to average brightness value; Can improve like this quality of the operating efficiency of slit lamp and the image of formation.
In further technical scheme, also comprise manipulation device, power set and imaging guide rail; Described imaging len is slidably mounted on imaging guide rail; Described power set drive described imaging len to move along imaging guide rail; Described manipulation device is connected with power set, for controlling power set.Pass through like this manipulation device, just may be controlled to picture lens in the position of imaging guide rail, and then adjust imaging device glazed thread while projecting, change the image that imaging device forms, in slit lamp, by regulating the position of object lens and imaging len, can change in a wider context the image that imaging device forms like this, meet more actual needs, for the diagnosis of eye situation provides more information.
In further technical scheme, imaging control apparatus comprises matching used infrared transmitter and infrared remote receiver, like this, by joystick is carried out to corresponding operating, can realize the adjustment to object lens position, can control image acquisition device and control simultaneously; Like this, in operating process, observer, with regard to not carrying out control operation in two different pieces of slit lamp, only just controls and can control object lens position and imaging device joystick, and then make the control operation of slit lamp very convenient.
In further technical scheme, also comprise display lamp and voice output unit, display lamp can, when infrared transmitter is launched infrared signal, produce corresponding indication, can make to observe determining whether to infrared remote receiver according to the state of display lamp, whether to imaging device, send infrared signal; Equally, the acoustical signal sending by voice output unit, observer can judge whether imaging device works.
In further technical scheme, imaging control apparatus also comprises central control unit and the first trigger mechanism; Described the first trigger mechanism comprises foot switch, and described the first trigger mechanism is connected with central control unit by USB interface.By foot switch, can realize the control of imaging device, facilitate observer's operation.Meanwhile, in this technical scheme, exist multiple imaging to trigger approach simultaneously, can provide more more options for observer, for the control of imaging device is provided convenience.
In further technical scheme, described imaging control apparatus also comprises the second trigger mechanism, and described the second trigger mechanism also comprises computer and input equipment, and according to input equipment, instruction sends triggering command to central control unit to described computer; Described input equipment comprises mouse or/and keyboard.By computer and input setting, not only may be controlled to picture device, also can be for observer provides more more options, for the control of imaging device is provided convenience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of structure principle chart of slit lamp;
Fig. 2 is the operation principle schematic diagram of the slit lamp that provides of the embodiment of the present invention one;
Fig. 3 is in the slit lamp that provides of the embodiment of the present invention two, the structured flowchart of imaging device;
Fig. 4 is in the slit lamp that provides of the embodiment of the present invention two, the workflow diagram of compression unit;
Fig. 5 is in the slit lamp that provides of the embodiment of the present invention two, the workflow diagram that photometry is processed;
Fig. 6 is in the slit lamp that provides of the embodiment of the present invention three, the control principle schematic diagram of imaging control apparatus.
The specific embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
For convenience of description, below slit lamp that embodiment is provided when being described, the information management system of slit lamp provided by the invention is described.
Please refer to Fig. 2, this figure is the operation principle schematic diagram of the slit lamp that provides of the embodiment of the present invention one.Identical with slit lamp of the prior art, the slit lamp that the embodiment of the present invention one provides comprises object lens 100, light-dividing device 200, eyepiece 300, imaging len 400 and imaging device 500.In addition, the slit lamp that this embodiment provides also comprises information management system 600.
In the present embodiment, information management system 600 comprises imaging control apparatus 610, image processing apparatus 620, patient information management device 630, calls flip flop equipment 640 and sub-calling module 650.Wherein, imaging control apparatus 610 can be imaging control apparatus of the prior art, and during as the imaging moiety that is digital camera at imaging device, imaging control apparatus can be the shutter of camera, can be also the mechanisms such as control knob that control the shutter of camera.Patient information management device 630 can be also patient information management device of the prior art.In the present embodiment, patient information management device can comprise connected memory module 631 and maintenance of information module 632.
Calling flip flop equipment 640 is connected with imaging control apparatus 610, image processing apparatus 620, maintenance of information module 632 and sub-calling module 650 simultaneously; In the present embodiment, image processing apparatus 620 and sub-calling module 650 by a data wire with call flip flop equipment 640 and be connected.Call flip flop equipment 640 and can comprise suitable input equipment (calling flip flop equipment 640 can be computer, driving switch etc.); Like this, the predetermined instruction that can input by input equipment.And then, call flip flop equipment 640 and can to imaging control apparatus 610, image processing apparatus 620 or maintenance of information module 632, send call instruction according to the predetermined instruction of input.In addition, when calling flip flop equipment 640 and can send call instruction to image processing apparatus 620 according to the predetermined instruction of input, can to sub-calling module 650, send call instructions simultaneously.When sub-calling module 650 receives call instruction, can to maintenance of information module 632, send image call instruction according to call instruction.Now, maintenance of information module 632 can be according to image call instruction calls predetermined image, and predetermined image is sent to image processing apparatus.
In addition, maintenance of information module 632 is also connected with imaging device 500, and now, maintenance of information module 632 can will store into memory module 631 in a predetermined manner from the image of imaging device 500 outputs; Described predetermined mode can be the mode of patient information management device 630 in prior art, such as: maintenance of information module 632 can be numbered the image of exporting from imaging device 500, or stores in memory module 631 after setting up corresponding relation with predetermined patient information.
Like this, by calling flip flop equipment 640, can call any in imaging control apparatus 610, image processing apparatus 620 and patient information management device 630; Meanwhile, by sub-calling module 650, can when calling image processing apparatus, automatically trigger the maintenance of information module 632 of patient information management device 630, realize the search of image in memory module 631 and call; Do not need to start respectively image processing apparatus 620 and patient information management device 630.Like this, utilize this information management system 600 to may be controlled to picture, process image and managing patient information, and then can make the more convenient to operate of slit lamp, improve operating efficiency.Like this, after entering information management system 600, by calling flip flop equipment 640, can call any in imaging control apparatus 610, image processing apparatus 620, patient information management device 630, certainly, also can print corresponding contents, the operation such as parameter adjusting.After imaging control apparatus 610, image processing apparatus 620 or patient information management device 630 end-of-jobs, can also turn back to and call the exercisable interface of flip flop equipment 640.
In the slit lamp that embodiment mono-provides, imaging device 500 can comprise sensor 510 and image acquisition device 520.Imaging control apparatus 610 is connected with image acquisition device 520; Like this, when calling imaging control apparatus 610, the concrete mode that imaging control apparatus 610 can provide with prior art, controls image acquisition device 520 according to the call instruction that calls flip flop equipment 640.Can realize the control to image acquisition device 520 like this, and then control imaging device 500.In the present embodiment, image acquisition device 520 is connected with maintenance of information module 632, like this, after image acquisition device 520 is gathering image, the image of collection can be sent to maintenance of information module 632,632 pairs of images of maintenance of information module carry out respective handling in the above described manner.
Please refer to Fig. 3, this figure is in the slit lamp that provides of the embodiment of the present invention two, the structured flowchart of imaging device.On the basis of embodiment mono-, in the slit lamp that embodiment bis-provides, imaging device 500 also comprises the conversion processing unit 530 being connected between sensor 510 and image acquisition device 520; Conversion processing unit 530 comprises the first converting unit 531, compression unit 532 and the second converting unit 533 that order is connected.Wherein, the first converting unit 531 can be converted to the input data signal of the rgb format of sensor output the original data signal of yuv format.Conversion formula can be as follows:
Y=0.299R+0.587G+0.114B；
U=-0.148R-0.289G+0.437B；
V=0.615R-0.515G-0.100B。
Wherein, R, G and B are the color value of red, green and blue in image; Brightness value in Y image, U and V operate chromatic value in image.Color space conversion can be by realizing the traversal of entire image.The mode providing with prior art, obtains the original data signal of the yuv format of each pixel in image by the mode traveling through, and stores respectively.
Compression unit 532 can carry out the original Y information data in original data signal the Y information data that Real-time and Dynamic compression forms compression, and the data width of the Y information data of compression is less than the data width of original Y information data.The second converting unit 533 can be by the Y information data of the U/V information data in original data signal and compression in conjunction with also changing the outputting data signals that forms rgb format, and sending image acquisition device 520 to, the data width of outputting data signals is less than input data signal width.By abandoning monochrome information data in image, can reduce the width of data signal like this, reduce the data width of data signal; When image acquisition device 520 receives data signal, receive complete outputting data signals like this, can not abandon color information, and then can retain image detail, guarantee the picture quality that image acquisition device 520 forms.
Wherein, please refer to Fig. 4, this figure is in the slit lamp that provides of the embodiment of the present invention two, the workflow diagram of compression unit.The detailed process that compression unit 532 carries out Real-time and Dynamic compression formation packed data signal by the original data signal of yuv format comprises:
Step 401, obtain luminance picture data;
Step 402, according to luminance picture data, produce attenuation function Φ and gradient image data G;
Gradient image data G ' after step 403, generation decay;
The divergence divG of step 404, acquisition gradient image data G ';
Step 405, according to luminance picture data acquisition initial solution X; Step 406, solving equation
Step 407, according to solving result, determine luminance picture data, form the Y information data of compression.
The working method that is compression unit 532 is: be written into viewdata signal; Obtain luminance picture data; According to luminance picture data, produce attenuation function Φ and gradient image data G; Produce the rear gradient image data G ' of decay; The divergence divG of compute gradient view data G '; According to luminance picture data acquisition initial solution X; Solving equation
according to solving result, determine luminance picture data, form the Y information data of compression.
Compress by the way processing, can make clear zone and dark space in image present better, keep or promote the light and shade details of image.
In embodiment bis-, conversion processing unit 530 can pass through FPGA(Field-Programmable Gate Array, i.e. field programmable gate array) mode realizes.In the present embodiment, FPGA selects the CycloneIIEP2C8 of altera corp to realize.
Refer again to Fig. 3, in embodiment bis-, slit lamp also comprises photometry blood processor 700, and described photometry blood processor 700 comprises gradation conversion unit 710, filter element 720, Threshold segmentation point determining unit 730, authentication unit 740 and the photometry determining unit 750 that order is connected.
Gradation conversion unit 710 is connected with the first converting unit, the data signal of the yuv format of the first converting unit output can be converted to gray level image.
Filter element 720 is for gray level image is carried out to gaussian filtering, and filtering interfering factor, for subsequent treatment is provided convenience, improves the accuracy rate of analyzing.
Threshold segmentation point determining unit 730 travels through the gray level image after gaussian filtering according to maximum between-cluster variance, determine Intensity threshold Separation point.The concrete mode of threshold segmentation point determining unit 730 can be: by the gamma characteristic of image, image is divided into background and two parts of target.Inter-class variance between background and target is larger, the difference that background and target are described is larger, when part target mistake is divided into background or part background mistake and is divided into target, capital causes background and target part difference to diminish, and then by determining maximum between-cluster variance, can determine more exactly background and target, reduce background and the target probability of wrong minute; After determining maximum between-cluster variance, then determine Intensity threshold Separation point according to brightness boundary between background and target.
Authentication unit 740, for according to definite luminance threshold cut-point, judges whether the part higher than luminance threshold cut-point has interference bright spot; If, get rid of this interference bright spot, form predetermined gray level image, then to threshold segmentation point determining unit 730, send triggering signals, threshold segmentation point determining unit 730 be take get rid of image after noise spot as basis definite Intensity threshold Separation point in the above described manner again; If not, determine that this luminance threshold cut-point is final Threshold segmentation point.Whether judge whether exist to disturb the brightness of the pixel that the mode of bright spot can relevant position to be greater than, or be not less than predetermined value, in one embodiment of the present of invention, predetermined value can be 255; In brightness, equal at 255 o'clock, determine to exist and disturb luminance point, and this pixel is defined as disturbing bright spot.
Photometry determining unit 750, for according to final Threshold segmentation point traversal gray level image, obtains the average brightness value that brightness value is greater than the above part of final Threshold segmentation point.
Please refer to Fig. 5, this figure is in the slit lamp that provides of the embodiment of the present invention two, the workflow diagram that photometry is processed, and photometry processing procedure comprises the steps:
Step 501, is converted to gray level image by the data signal of yuv format.
Step 502, carries out gaussian filtering by gray level image.
Step 503, travels through the gray level image after gaussian filtering according to maximum between-cluster variance, determine Intensity threshold Separation point.
Step 504, whether judgement has interference bright spot higher than the part of luminance threshold cut-point, if so, enters step 505; If not, enter step 506.
Step 505, determines that this part is for disturbing bright spot, and bright spot part is disturbed in eliminating, returns to step 503.
Step 506, according to final Threshold segmentation point traversal gray level image, obtains the average brightness value that brightness value is greater than the above part of final Threshold segmentation point.
Specific works process can, with identical to above-mentioned photometry blood processor 700 work process, no longer describe in detail.
Image acquisition device 520 is connected with photometry determining unit, and can regulate photometry acquisition parameter according to average brightness value; As: when determining average brightness value higher than predetermined desired value according to current data, can make image acquisition device 520 reduce when upper once image acquisition (next frame exposure) and gain or time of exposure; In contrary situation, can increase gain or time of exposure, to obtain better image effect.
Be appreciated that by this (frame) image is carried out to photometry blood processor, can regulate for next (frame) image imaging parameter, guarantee the quality of the image of acquisition.
In addition, photometry blood processor 700 can also comprise region selecting arrangement, data extraction device and the photometry determining unit that order is connected.Make region selecting arrangement for selecting predetermined region as photometry base area.Data extraction device is connected with the first converting unit 531, and extracts the destination image data corresponding with photometry base area in the data signal of the yuv format of exporting in the first converting unit 531.Make photometry determining unit for according to the mean flow rate of the monochrome information data acquisition photometry base area of destination image data.Image acquisition device 520 is connected with photometry determining unit, and determines photometry acquisition parameter according to described average brightness value.Region selecting arrangement can be computer, by computer, selects predetermined region as photometry base area, and concrete mode can be selected predetermined region by mouse or the keyboard of computer.Concrete mode can be: system Exposure Metering is set as to manual photometry; On predetermined image preview window, with left mouse button click, need the upper left corner of photometry part; Do not unclamp left button, pull mouse until need the lower right corner of photometry part; Unclamp left button, the part that computer selects according to mouse circle is automatically defined as photometry base area.Select again this photometry base area to be carried out to respective handling, obtain the mean flow rate in this region.Utilize this photometry blood processor 700, also can improve the quality of the operating efficiency of slit lamp and the image of formation.
In the slit lamp that embodiment bis-provides, also comprise manipulation device, power set and imaging guide rail.Imaging len 400 is slidably mounted on imaging guide rail, and like this, imaging len 400 can move along imaging guide rail, and then adjusts imaging device glazed thread while projecting, and changes the image that imaging device 500 forms; By regulating the position of object lens 100 and imaging len 400, can change in a wider context the image that imaging device 500 forms like this, meet more actual needs, for the diagnosis of eye situation provides more information.Power set are used for driving imaging len 400 to move along imaging guide rail; Described manipulation device is connected with power set, for controlling power set, can realize so the automatic control to imaging len 400.Power set can be cylinder, screw rod, gear mechanism etc.
Please refer to Fig. 6, this figure is the control principle schematic diagram of imaging control apparatus in the slit lamp that provides of the embodiment of the present invention three.On the basis of above-described embodiment, the slit lamp that this embodiment provides also comprises the joystick (not shown) of object lens 100 positions of controlling slit lamp.
Imaging control apparatus 610 comprises infrared transmitter 611 and the infrared remote receiver 612 using by infrared transmission Signal cooperation; Infrared transmitter 611 and infrared remote receiver 612 form infrared transfer equipment.Infrared transmitter 611 is arranged on joystick, and infrared transmitter 612 comprises that touches a trigger element; Infrared remote receiver 612 is connected with image acquisition device 520, and image acquisition device 520 triggers and starts according to the infrared signal of the reception of infrared remote receiver 612.Like this, by joystick is carried out to corresponding operating, can realize the adjustment to object lens 100 positions, can control image acquisition device 520 and control simultaneously; Like this, in operating process, observer, with regard to not carrying out control operation in two different pieces of slit lamp, only just controls and can control object lens 100 positions and imaging device 500 joystick, and then make the control operation of slit lamp very convenient.
Please refer to Fig. 6, in order to indicate the state of infrared transfer equipment, imaging control apparatus 610 can also comprise display lamp 613.Display lamp 613 is connected with the touch trigger element of infrared transmitter 611, and touch trigger element and can control display lamp, and then, when touch trigger element makes infrared transmitter 611 send infrared signal, can connect the power supply of display lamp 613, make display lamp luminous; 613 the power supply that also can disconnect display lamp, stops display lamp 613 luminous; Like this, observer can determine whether infrared transmitter 611 sends infrared signal according to the state of display lamp 613; And then can judge whether imaging device 500 works.
As shown in Figure 6, imaging control apparatus 610 can also comprise voice output unit 614.Voice output unit 614 is connected with infrared remote receiver 612, and makes voice output unit 614 trigger and start according to the infrared signal of the reception of infrared remote receiver 612.Like this, observer can judge whether imaging device works according to the state of voice output unit 614.
Certainly, voice output unit 614 can be connected with the touch trigger element of infrared transmitter 611, by touching trigger element, controls voice output unit; So also can realize according to the state of voice output unit 614 and judge the object whether imaging device works.
In embodiment tri-, imaging control apparatus 610 can also comprise central control unit and the first trigger mechanism.Central control unit is connected with image acquisition device 520, and image acquisition device 520 triggers and starts according to the control signal of central control unit; The first trigger mechanism comprises foot switch, and the first trigger mechanism is connected with central control unit by USB interface, and central control unit is for being converted to control signal by foot switch signal.In addition, imaging control apparatus 610 can also comprise the second trigger mechanism, the second trigger mechanism also comprises computer and input equipment, and according to input equipment, instruction sends triggering command to central control unit to computer, and central control unit is converted to control signal by triggering command; Input equipment comprises mouse or/and keyboard; By mouse, can send triggering command like this, also can send triggering command by keyboard.In the technical scheme that this embodiment provides, owing to existing multiple imaging to trigger approach simultaneously, can provide more more options for observer, for the control of imaging device is provided convenience.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a slit lamp, comprises the information management system of imaging len, imaging device and slit lamp, and described imaging device comprises sensor and image acquisition device;
The information management system of described slit lamp, comprise imaging control apparatus, image processing apparatus and patient information management device, described patient information management device comprises connected memory module and maintenance of information module, it is characterized in that, also comprises and calls flip flop equipment and sub-calling module;
The described flip flop equipment that calls is connected with imaging control apparatus, image processing apparatus, patient information management device and sub-calling module respectively, and to one of imaging control apparatus, image processing apparatus and patient information management device, sends call instruction according to predetermined instruction; Described, when calling flip flop equipment and sending call instruction to described image processing apparatus, to described sub-calling module, send call instruction simultaneously; Described sub-calling module sends image call instruction according to call instruction to described maintenance of information module;
Described maintenance of information module is connected with imaging device, will store in a predetermined manner memory module from the image of imaging device output; Also will be stored in the predetermined image in memory module according to image call instruction calls, and predetermined image is sent to image processing apparatus; Described imaging control apparatus is connected with described image acquisition device, and described imaging control apparatus is controlled image acquisition device according to call instruction;
Described image acquisition device is connected with maintenance of information module, and described image acquisition device sends to described maintenance of information module by the image of collection after gathering image;
Described imaging device also comprises the conversion processing unit being connected between sensor and image acquisition device; Described conversion processing unit comprises the first converting unit, compression unit and the second converting unit that order is connected;
Described the first converting unit is for being converted to the input data signal of the rgb format of sensor output the original data signal of yuv format;
Described compression unit forms the Y information data of compression for the original Y information data of original data signal being carried out to Real-time and Dynamic compression, the data width of the Y information data of described compression is less than the data width of original Y information data;
Described the second converting unit is for also changing by the Y information data combination of the U/V information data of original data signal and compression the outputting data signals that forms rgb format, and sending image acquisition device to, the data width of described outputting data signals is less than described input data signal width.
2. slit lamp according to claim 1, is characterized in that, also comprises photometry blood processor, and described photometry blood processor comprises gradation conversion unit, filter element, Threshold segmentation point determining unit, authentication unit and the photometry determining unit that order is connected;
Described gradation conversion unit is connected with described the first converting unit, for the data signal of the yuv format of the first converting unit output is converted to gray level image;
Described filter element is for carrying out gaussian filtering by gray level image;
Described threshold segmentation point determining unit travels through the gray level image after gaussian filtering according to maximum between-cluster variance, determine Intensity threshold Separation point; The triggering signal that can also send according to described authentication unit travels through according to maximum between-cluster variance predetermined gray level image, determines Intensity threshold Separation point;
Described authentication unit, for according to definite luminance threshold cut-point, judges whether the part higher than luminance threshold cut-point has interference bright spot; If so, get rid of this interference bright spot, form predetermined gray level image, then to threshold segmentation point determining unit, send triggering signal; If not, determine that Intensity threshold Separation point is final Threshold segmentation point;
Described photometry determining unit, for according to the described gray level image of final Threshold segmentation point traversal, obtains the average brightness value of the above part of final Threshold segmentation point;
Described image acquisition device is connected with described photometry determining unit, and determines photometry acquisition parameter according to described average brightness value.
3. slit lamp according to claim 1, is characterized in that, also comprises photometry blood processor, and described photometry blood processor comprises region selecting arrangement, data extraction device and the photometry determining unit that order is connected;
Described region selecting arrangement is for selecting predetermined region as photometry base area;
Described data extraction device is connected with the first converting unit, and extracts the destination image data corresponding with described photometry base area for the data signal of the yuv format in the first converting unit output;
Described photometry determining unit is connected with described image acquisition device, and for according to the mean flow rate of photometry base area described in the monochrome information data acquisition of destination image data;
Described image acquisition device is determined photometry acquisition parameter according to described average brightness value.
4. slit lamp according to claim 1 and 2, is characterized in that, also comprises manipulation device, power set and imaging guide rail; Described imaging len is slidably mounted on imaging guide rail; Described power set drive described imaging len to move along imaging guide rail; Described manipulation device is connected with power set, for controlling power set.
5. slit lamp according to claim 1 and 2, is characterized in that, also comprises the joystick of the object lens position of controlling slit lamp;
Described imaging control apparatus comprises infrared transmitter and the infrared remote receiver using by infrared transmission Signal cooperation; Described infrared transmitter is arranged on joystick, and described infrared transmitter comprises that touches a trigger element; Described infrared remote receiver is connected with described image acquisition device, and described image acquisition device triggers and starts according to the infrared signal of the reception of infrared remote receiver.
6. slit lamp according to claim 5, is characterized in that, also comprises display lamp and voice output unit;
Described display lamp is connected with the touch trigger element of described infrared transmitter, and described touch trigger element is controlled display lamp;
Described voice output unit is connected with infrared remote receiver, and triggers and start according to the infrared signal of the reception of infrared remote receiver; Or be connected with the touch trigger element of infrared transmitter, described touch trigger element is controlled voice output unit.
7. slit lamp according to claim 6, is characterized in that, imaging control apparatus also comprises central control unit and the first trigger mechanism; Described central control unit is connected with described image acquisition device, and described image acquisition device triggers and starts according to the control signal of central control unit; Described the first trigger mechanism comprises foot switch, and described the first trigger mechanism is connected with central control unit by USB interface, and described central control unit is converted to control signal by foot switch signal.
8. slit lamp according to claim 7, it is characterized in that, described imaging control apparatus also comprises the second trigger mechanism, described the second trigger mechanism also comprises computer and input equipment, according to input equipment, instruction sends triggering command to central control unit to described computer, and described central control unit is converted to control signal by triggering command; Described input equipment comprises mouse or/and keyboard.
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| CN110072061B (en) * | 2019-05-31 | 2021-02-09 | 努比亚技术有限公司 | Interactive shooting method, mobile terminal and storage medium |
| CN110742576A (en) * | 2019-12-03 | 2020-02-04 | 苏州帮桥医疗器械有限公司 | Automatic adjusting system and automatic adjusting method for slit-lamp microscope light source |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0221649A2 (en) * | 1985-09-09 | 1987-05-13 | Ocular Instruments, Inc. | Slit lamp attachment |
| CN202843580U (en) * | 2012-09-28 | 2013-04-03 | 北京锐视觉科技有限公司 | Slit lamp and information management system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290143A (en) * | 2002-03-29 | 2003-10-14 | Topcon Corp | Slitlamp biomicroscope |
| US7325923B2 (en) * | 2004-02-27 | 2008-02-05 | Makino Ophthalmic Instrument Co., Ltd. | Ophthalmic examination and treatment system |
| US7726814B2 (en) * | 2004-07-08 | 2010-06-01 | Costruzioni Strumenti Oftalmici S.R.L. | Reflection microscope and method |
| US7771051B2 (en) * | 2007-06-13 | 2010-08-10 | Rahim Hirji | Near eye opthalmic device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0221649A2 (en) * | 1985-09-09 | 1987-05-13 | Ocular Instruments, Inc. | Slit lamp attachment |
| CN202843580U (en) * | 2012-09-28 | 2013-04-03 | 北京锐视觉科技有限公司 | Slit lamp and information management system thereof |
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| Title |
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| JP特开2003-290143A 2003.10.14 * |
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