CN108363940A - One kind being applied to iris capturing mould ranging control method and device in the block - Google Patents
One kind being applied to iris capturing mould ranging control method and device in the block Download PDFInfo
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- CN108363940A CN108363940A CN201711285615.3A CN201711285615A CN108363940A CN 108363940 A CN108363940 A CN 108363940A CN 201711285615 A CN201711285615 A CN 201711285615A CN 108363940 A CN108363940 A CN 108363940A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/143—Sensing or illuminating at different wavelengths
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
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Abstract
The present invention relates to iris capturings.Applied to iris capturing mould ranging control method in the block, iris capturing module carries out ranging using the infrared light that infrared distance sensor is sent out, iris capturing module shoots human eye iris image using iris image sensor, during iris image sensor shoots human eye iris image, the infrared light that infrared distance sensor is sent out periodically reaches human eye and is switching less than between intelligent's eye；So that the human eye iris image in the image that iris image sensor obtains under existing infrared light, and whether there is or not the human eye iris images under infrared light.This patent provides condition for the acquisition of iris image sensor without the human eye iris image under infrared light.The range unit applied to iris capturing mould ranging control method in the block is used applied to iris capturing mould range unit system in the block.
Description
Technical field
The present invention relates to optical device fields, and in particular to iris capturing.
Background technology
Core component one of of the range finder module as iris image acquiring device at present, be mainly used to measure human eye and camera lens it
Between distance, be used for guiding user adjust the distance between human eye and camera lens, it is ensured that collected clearly in suitable distance
Iris image.Currently, there are mainly two types of the distance measuring methods of range finder module：One is the rangings based on hardware infrared distance sensor
Method, a kind of iris locater plate as disclosed in patent CN103099624A, a kind of dynamic people disclosed in patent CN106778713A
The iris identification device etc. of eye tracking；Another kind is the distance measuring method based on software, as patent CN105654040A discloses one
Distance measuring method of the kind based on software, the condition premised on the iris diameter of different user is identical are acquired according to measuring in image
The parameters such as the radius or diameter of iris, the area of imaging sensor and field angle, calculate the distance between camera lens and eyes.
The hardware based patent of the first two has all used infrared distance sensor, but all do not mention the sensor send out it is red
Outer light imaging when on being influenced caused by iris image, directly can be to iris image if a length of 940nm of the infrared waves
It has an impact, if it is 870nm, the flicker hot spot generated can also have an impact iris image, be unfavorable for collecting high-quality
Measure clear image.And the distance measuring method based on software then has a problem that, i.e., in non-blur-free imaging, can not detect rainbow
Film can not just complete ranging at this time, therefore its distance measuring method has certain drawback.
Invention content
The object of the present invention is to provide one kind being applied to iris capturing mould ranging control method in the block, in solution
State problem.
The object of the present invention is to provide one kind being applied to iris capturing mould ranging controlling apparatus in the block, is to use to answer
Range unit for iris capturing mould ranging control method in the block.
Following technical scheme may be used to realize in technical problem solved by the invention：
One kind being applied to iris capturing mould ranging control method in the block, and iris capturing module utilizes infrared distance sensor
The infrared light sent out carries out ranging, and iris capturing module shoots human eye iris image using iris image sensor,
It is characterized in that, during iris image sensor shooting human eye iris image, infrared distance sensor is sent out
Infrared light periodically reach human eye and less than intelligent eye between switch；
So that the human eye iris image in the image that iris image sensor obtains under existing infrared light, and whether there is or not red
Human eye iris image under outer light.
The infrared light that the infrared distance sensor of this patent is sent out is periodically in arrival human eye and less than between intelligent's eye
Switching because the infrared portions time reaches human eye, therefore can carry out ranging, separately because the infrared portions time cannot within the time
Human eye is reached, condition is provided without the human eye iris image under infrared light for the acquisition of iris image sensor, so as to avoid rainbow
The problem of film image is influenced by infrared light.
The creativeness of this patent is not only only that through such simple method, solves the problems, such as this patent proposition, also
It is to propose the problem of iris image is influenced by infrared light.
Iris capturing module will reach judgement parameter, the human eye iris image of human eye whether there is or not infrared light, be uploaded to upper
Machine, host computer are picked out the human eye iris image under infrared light according to whether there is or not infrared lights to reach human eye, are retained without the people under infrared light
Eye iris image, as the image for subsequent processing.
The infrared light that infrared distance sensor is sent out is periodically in arrival human eye and less than the side switched between intelligent's eye
Method can be：
Method one：Infrared distance sensor switches periodically between work and halted state；
Method two：The light extraction light path of infrared distance sensor is periodically blocked.
In method one, one power module, the power supply can be connected by a power control module with infrared distance sensor
Control module is equipped with a timing unit.Power control module controls power-on time, to infrared distance sensor by timing unit
Periodically power supply.
In this method, whether iris capturing module is powered using power control module reaches the judgement of human eye as no infrared light
Use parameter.
In method two, it can further include a driving motor with iris capturing module, be fixed in the shaft of the driving motor
One can block the shielding plate for the infrared light that the infrared distance sensor sends out.Driving motor drive shaft rotates, to drive
Shielding plate rotation thereon, and then the infrared light that infrared distance sensor is sent out is made periodically to be blocked.
In this method, iris capturing module reaches the judgement parameter of human eye using the position of shielding plate as no infrared light.
The wavelength for the infrared light that the infrared distance sensor is sent out is preferably 940nm.
One kind being applied to iris capturing mould ranging control method in the block, is additionally provided with the infrared photosensitive biography of a monitoring of environmental light
Sensor, the outer photosensitive sensor detection be 450nm~650nm wavelength ambient light, iris capturing module is by the outer light
The environmental light parameter that dependent sensor detects uploads host computer.Host computer adjusts iris image sensor according to environmental light parameter
Acquisition parameters, including time for exposure, analog gain etc..Host computer adjusts the brightness and comparison of iris image according to environmental light parameter
Degree, to ensure to collect clearly high quality iris image, and adapts to different environment and is acquired.
One kind being applied to iris capturing mould range unit in the block, including an iris capturing module, the iris capturing mould
Block includes a processor system, iris image sensor of the processor system connection one for acquiring iris image, described
Processor system is also connected with an infrared distance sensor for measuring the distance between human eye and camera lens, which is characterized in that institute
It states infrared distance sensor and one power module is connected by a power control module, the power control module is equipped with a timing list
Member.Power control module is controlled power-on time, is periodically powered to infrared distance sensor by timing unit.So that red
The infrared light that outer distance measuring sensor is sent out periodically reaches human eye and is switching less than between intelligent's eye；So that iris figure
Human eye iris image in the image obtained as sensor under existing infrared light, but whether there is or not the human eye iris images under infrared light.
The power control module can be directly connected to host computer, can also connection processing device system, pass through processor system
System communication connection host computer.
Another kind is applied to iris capturing mould range unit in the block, including an iris capturing module, the iris capturing
Module includes a processor system, iris image sensor of the processor system connection one for acquiring iris image, institute
It states processor system and is also connected with an infrared distance sensor for measuring the distance between human eye and camera lens, which is characterized in that
The iris capturing module further includes a driving motor, and one is fixed in the shaft of the driving motor can block the infrared survey
Shielding plate away from the infrared light that sensor is sent out.Driving motor drive shaft rotates, to drive shielding plate rotation thereon, into
And the infrared light that infrared distance sensor is sent out is made periodically to be blocked.So that the infrared light week that infrared distance sensor is sent out
Phase property reaches human eye and is switching less than between intelligent's eye；So that existing red in the image that iris image sensor obtains
Human eye iris image under outer light, but whether there is or not the human eye iris images under infrared light.
Above two range unit, being related to for other components is similar, and following structures may be used：
Iris capturing module includes a shell, and the shell is fixedly arranged in the middle of the infrared distance sensor；
There are two the iris image sensors, and one of iris image sensor is fixed on the infrared distance measurement sensing
The right side of device, for acquiring iris of right eye image, another iris image sensor is fixed on the infrared distance sensor
Left side, for acquiring iris of left eye image；
Two iris image sensors are separately connected the processor system.
This patent is set there are two iris image sensor, the iris image of eyes can be acquired, in addition, this patent optimizes rainbow
The position of film image sensor keeps collection result more accurate.
The processor system is also connected with an infrared photosensitive sensor for monitoring of environmental light, the infrared light sensor
The infrared optical sensor of device is fixed on the lower section of the infrared distance sensor.This patent is in existing iris eyes synchronous acquisition
It has installed infrared photosensitive sensor on device additional, has allowed processor system according to ambient light data, primary processor can control iris figure
The parameters such as time for exposure, analog gain as sensor, the brightness and contrast of the collected iris image of dynamic regulation, it is ensured that
Collect clearly high quality iris image.
Driving motor is preferably fixed on the side wall of infrared distance sensor, the length direction of the shaft with it is described infrared
The infrared light emission direction of rangefinder is identical, and the shielding plate is located at the front of the infrared distance sensor light-emitting window；
The shielding plate is preferably in disc-shaped, is provided with multiple light-transmitting openings on shielding plate, multiple light-transmitting openings are with the center of shaft
Centered on axis, ring-type is surrounded；
The bore of the light-transmitting opening is not less than the bore of the light-emitting window, the minimum range between adjacent two light-transmitting openings
Not less than the bore value of a light-transmitting opening；
The distance of the center of the light-emitting window to the shaft is equal to the center of the light-transmitting opening to the distance of the shaft.
Shielding plate rotates under the drive of shaft, and light-transmitting opening reaches at light-emitting window successively successively, when reaching, infrared distance measurement
The light that sensor is sent out is not blocked, and before not reaching, the light that infrared distance sensor is sent out is blocked.
Iris capturing module, including a shell are provided with the first trepanning on the left of the shell, are provided on the right side of the shell
The camera lens of second trepanning, the iris of left eye imaging sensor is stretched out by first trepanning, the iris of right eye image sensing
The camera lens of device is stretched out by second trepanning.So that camera lens and human eye face as far as possible.
The inner surface of the shell is equipped with a sliding slot, the camera lens of the iris of left eye imaging sensor, the right eye rainbow
The rear of the camera lens of film image sensor is respectively provided with a sliding rail that can be slided along the sliding slot；
Iris capturing module further includes the driving mechanism that the driving sliding rail moves on the sliding slot；
First trepanning, second trepanning are strip trepanning.This patent is additionally arranged sliding system, and optimizes
The structure of trepanning allows camera lens to horizontally slip, and the distance between two camera lenses of adjustment are equal or close with the interpupillary distance for the person of being taken, from
And the full face of the acquisition eyes of maximum possible.
The infrared distance sensor includes an infrared transmitter, an infrared remote receiver, opens that there are two thoroughly on the shell
Unthreaded hole, the infrared transmitter, the infrared remote receiver are located at behind a loophole；
A baffle plate is equipped between infrared transmitter and the infrared remote receiver.In order to avoid the light that infrared transmitter is sent out is direct
Into infrared remote receiver, accuracy of detection is influenced.
A spherical cover body is equipped at loophole where the infrared remote receiver, the outer wall of the spherical shape cover body is smooth, interior
Wall frosted.This patent is additionally arranged spherical cover body, can be effectively increased light incident area, improves accuracy of detection, in addition, mill in also selecting
Sand, outer smooth material, can increase the light diffusion in diffuser, keep light intensity in cover more uniform, can further improve inspection
Survey precision.
The processor system is fixed in the shell, is preferably placed at the lower section of the shell.To improve the weight of equipment
Amount layout makes center of gravity to movement below middle part.
The light inlet of the camera lens is equipped with an infrared filter.The infrared filter is preferably electroplate with the optics glass of infrared filter membrane
Glass.Infrared filter has high projection ratio to infrared light, has high reflectance for visible light.
Description of the drawings
Fig. 1 is the part-structure schematic diagram of range unit embodiment 1；
Fig. 2 is the part-structure schematic diagram of range unit embodiment 2.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Conjunction is specifically illustrating that the present invention is further explained.
One kind being applied to iris capturing mould ranging control method in the block, and iris capturing module utilizes infrared distance sensor
The infrared light sent out carries out ranging, and iris capturing module shoots human eye iris image, iris image using iris image sensor
During sensor shoots human eye iris image, infrared light that infrared distance sensor is sent out periodically reach human eye and
Switch less than between intelligent's eye；So that the human eye iris figure in the image that iris image sensor obtains under existing infrared light
Picture, but whether there is or not the human eye iris images under infrared light.The infrared light that the infrared distance sensor of this patent is sent out periodically exists
It reaches human eye and switches less than between intelligent's eye, because the infrared portions time reaches human eye, therefore can be surveyed within the time
Away from, separately because the infrared portions time cannot reach human eye, for iris image sensor obtain without the human eye iris figure under infrared light
As the problem of providing condition, influenced by infrared light so as to avoid iris image.
Iris capturing module will reach judgement parameter, the human eye iris image of human eye whether there is or not infrared light, be uploaded to upper
Machine, host computer are picked out the human eye iris image under infrared light according to whether there is or not infrared lights to reach human eye, are retained without the people under infrared light
Eye iris image, as the image for subsequent processing.
The infrared light that infrared distance sensor is sent out is periodically in arrival human eye and less than the side switched between intelligent's eye
Method can be：
Method one：Infrared distance sensor switches periodically between work and halted state；Method two：Infrared distance measurement
The light extraction light path of sensor is periodically blocked.
In method one, one power module, power supply control can be connected by a power control module with infrared distance sensor
Module is equipped with a timing unit.Power control module controls power-on time, to the infrared distance sensor period by timing unit
The power supply of property.In this method, iris capturing module reaches sentencing for human eye so that whether power control module powers as no infrared light
Disconnected parameter.
Can further include a driving motor with iris capturing module, being fixed with one in the shaft of driving motor can in method two
The shielding plate for the infrared light that blocking infrared distance sensor is sent out.Driving motor drive shaft rotates, to drive screening thereon
Catch rotates, and then the infrared light that infrared distance sensor is sent out is made periodically to be blocked.In this method, iris capturing module
The judgement parameter of human eye is reached using the position of shielding plate as no infrared light.
One kind being applied to iris capturing mould ranging control method in the block, is additionally provided with the infrared photosensitive biography of a monitoring of environmental light
Sensor, the detection of outer photosensitive sensor be 450nm~650nm wavelength ambient light, iris capturing module is by outer photosensitive sensor
The environmental light parameter detected uploads host computer.The shooting that host computer adjusts iris image sensor according to environmental light parameter is joined
Number, including time for exposure, analog gain etc..Host computer adjusts the brightness and contrast of iris image according to environmental light parameter, with
Ensure to collect clearly high quality iris image, and adapts to different environment and be acquired.Infrared distance sensor is sent out
The wavelength of infrared light be preferably 940nm.
Specific embodiment 1
Referring to Fig.1, a kind of to be applied to iris capturing mould range unit in the block, including an iris capturing module, iris are adopted
It includes a processor system, iris image sensor 1 of the processor system connection one for acquiring iris image, processing to collect module
Device system is also connected with an infrared distance sensor for measuring the distance between human eye and camera lens, and infrared distance sensor 2 is logical
It crosses a power control module and connects a power module, power control module is equipped with a timing unit.Power control module passes through meter
Shi Danyuan controls power-on time, periodically powers to infrared distance sensor 2.So that infrared distance sensor 2 send out it is red
Outer photoperiodism reaches human eye and is switching less than between intelligent's eye；So that the image that iris image sensor 1 obtains
In human eye iris image under existing infrared light, and whether there is or not the human eye iris images under infrared light.Power control module can be straight
Connect host computer in succession, can also connection processing device system, host computer is communicated to connect by processor system.Power control module,
At least switch a power supply state within every 2 seconds.
Iris capturing module includes a shell, and shell is fixedly arranged in the middle of infrared distance sensor 2；Iris image sensor
There are two 1, one of iris image sensor is fixed on the right side of infrared distance sensor 2, for acquiring iris of right eye figure
Picture, another iris image sensor are fixed on the left side of infrared distance sensor 2, for acquiring iris of left eye image；Two
Iris image sensor is separately connected processor system.This patent is set there are two iris image sensor, can acquire the rainbow of eyes
Film image keeps collection result more accurate in addition, this patent optimizes the position of iris image sensor.
Processor system be also connected with one for monitoring of environmental light infrared photosensitive sensor, infrared photosensitive sensor it is infrared
Light-sensitive element 3 is fixed on the lower section of infrared distance sensor 2.This patent installs additional on existing iris eyes synchronous acquisition device
Infrared photosensitive sensor allows processor system according to ambient light data, and primary processor can control iris image sensor
The parameters such as time for exposure, analog gain, the brightness and contrast of the collected iris image of dynamic regulation, it is ensured that it is clear to collect
High quality iris image.
It is provided with the first trepanning on the left of shell, is provided with the second trepanning, the mirror of iris of left eye imaging sensor on the right side of shell
Head is stretched out by the first trepanning, and the camera lens of iris of right eye imaging sensor is stretched out by the second trepanning.So that camera lens and human eye are as far as possible
Face.
The inner surface of shell is equipped with a sliding slot, camera lens, the iris of right eye imaging sensor of iris of left eye imaging sensor
The rear of camera lens be respectively provided with a sliding rail that can be slided along sliding slot；Iris capturing module, further include a driving sliding rail on the chute
The driving mechanism of movement；First trepanning, the second trepanning are strip trepanning.This patent is additionally arranged sliding system, and optimizes
The structure of trepanning allows camera lens to horizontally slip, and the distance between two camera lenses of adjustment are equal or close with the interpupillary distance for the person of being taken, from
And the full face of the acquisition eyes of maximum possible.
Infrared distance sensor 2 includes an infrared transmitter, an infrared remote receiver, opens that there are two loopholes on shell, red
External transmitter, infrared remote receiver are located at behind a loophole；One is equipped between infrared transmitter and infrared remote receiver
Baffle plate.In order to avoid the light that infrared transmitter is sent out is directly entered infrared remote receiver, accuracy of detection is influenced.
A spherical cover body is equipped at loophole where infrared remote receiver, the outer wall of spherical cover body is smooth, inner wall frosted.This
Patent is additionally arranged spherical cover body, can be effectively increased light incident area, improves accuracy of detection, in addition, frosted in also selecting, outer smooth
Material, the light diffusion in diffuser can be increased, keep light intensity in cover more uniform, can further improve accuracy of detection.Place
Reason device system is fixed in shell, is preferably placed at the lower section of shell.To improve the weight layout of equipment, make center of gravity to middle part lower section
It is mobile.The light inlet of camera lens is equipped with an infrared filter.Infrared filter is preferably electroplate with the optical glass of infrared filter membrane.Infrared filter
There is high projection ratio to infrared light, there is high reflectance for visible light.
Specific embodiment 2
With reference to Fig. 2, another kind is applied to iris capturing mould range unit in the block, including an iris capturing module, iris
Acquisition module includes a processor system, iris image sensor 1 of the processor system connection one for acquiring iris image, place
Reason device system is also connected with an infrared distance sensor 2 for measuring the distance between human eye and camera lens, and iris capturing module is also
Including a driving motor, the screening for the infrared light that one can block infrared distance sensor 2 to send out is fixed in the shaft 4 of driving motor
Catch 5.Driving motor drive shaft 4 rotates, and to drive shielding plate rotation thereon, and then infrared distance sensor 2 is made to send out
The infrared light gone out is periodically blocked.So that the infrared light that sends out of infrared distance sensor 2 periodically reach human eye and
Switch less than between intelligent's eye；So that the human eye iris in the image that iris image sensor 1 obtains under existing infrared light
Image, but whether there is or not the human eye iris images under infrared light.
Iris capturing module includes a shell, and shell is fixedly arranged in the middle of infrared distance sensor 2；Iris image sensor
There are two 1, one of iris image sensor is fixed on the right side of infrared distance sensor 2, for acquiring iris of right eye figure
Picture, another iris image sensor are fixed on the left side of infrared distance sensor 2, for acquiring iris of left eye image；Two
Iris image sensor is separately connected processor system.This patent is set there are two iris image sensor, can acquire the rainbow of eyes
Film image keeps collection result more accurate in addition, this patent optimizes the position of iris image sensor.
Processor system be also connected with one for monitoring of environmental light infrared photosensitive sensor, infrared photosensitive sensor it is infrared
Light-sensitive element 3 is fixed on the lower section of infrared distance sensor 2.This patent installs additional on existing iris eyes synchronous acquisition device
Infrared photosensitive sensor allows processor system according to ambient light data, and primary processor can control iris image sensor
The parameters such as time for exposure, analog gain, the brightness and contrast of the collected iris image of dynamic regulation, it is ensured that it is clear to collect
High quality iris image.
Driving motor is preferably fixed on the side wall of infrared distance sensor 2, the length direction and infrared range-measurement system of shaft 4
Infrared light emission direction it is identical, shielding plate 5 is located at the front of 2 light-emitting window of infrared distance sensor；Shielding plate is preferably in disk
Shape is provided with multiple light-transmitting openings on shielding plate, and multiple light-transmitting openings surround ring-type centered on the central axis of shaft；Light-transmitting opening
Bore is not less than the bore of light-emitting window, and the minimum range between adjacent two light-transmitting openings is not less than the bore of a light-transmitting opening
Value；The distance of the center of light-emitting window to shaft is equal to the center of light-transmitting opening to the distance of shaft.Shielding plate is under the drive of shaft
Rotation, light-transmitting opening reach at light-emitting window successively successively, and when reaching, the light that infrared distance sensor is sent out is not blocked, not
Before arrival, the light that infrared distance sensor is sent out is blocked.The rotating speed of driving motor be every 2 seconds at least 1 turn, it is saturating on shielding plate
There are two optical ports.Light-transmitting opening has 2 in Fig. 2.
It is provided with the first trepanning on the left of shell, is provided with the second trepanning, the mirror of iris of left eye imaging sensor on the right side of shell
Head is stretched out by the first trepanning.So that camera lens and human eye face as far as possible.
The inner surface of shell is equipped with a sliding slot, camera lens, the iris of right eye imaging sensor of iris of left eye imaging sensor
The rear of camera lens be respectively provided with a sliding rail that can be slided along sliding slot；Iris capturing module, further include a driving sliding rail on the chute
The driving mechanism of movement；First trepanning, the second trepanning are strip trepanning.This patent is additionally arranged sliding system, and optimizes
The structure of trepanning allows camera lens to horizontally slip, and the distance between two camera lenses of adjustment are equal or close with the interpupillary distance for the person of being taken, from
And the full face of the acquisition eyes of maximum possible.
Infrared distance sensor includes an infrared transmitter, an infrared remote receiver, opens that there are two loopholes on shell, infrared
Transmitter, infrared remote receiver are located at behind a loophole；A light is equipped between infrared transmitter and infrared remote receiver
Baffle.In order to avoid the light that infrared transmitter is sent out is directly entered infrared remote receiver, accuracy of detection is influenced.It is saturating where infrared remote receiver
A spherical cover body is equipped at unthreaded hole, the outer wall of spherical cover body is smooth, inner wall frosted.This patent is additionally arranged spherical cover body, Ke Yiyou
Effect increases light incident area, improves accuracy of detection, in addition, frosted, outer smooth material in also selecting, can increase the light in diffuser
Diffusion keeps light intensity in cover more uniform, can further improve accuracy of detection.Processor system is fixed in shell, preferably
Positioned at the lower section of shell.To improve the weight layout of equipment, make center of gravity to movement below middle part.It is red that the light inlet of camera lens is equipped with one
Outer filter.Infrared filter is preferably electroplate with the optical glass of infrared filter membrane.Infrared filter has high projection ratio to infrared light, for
Visible light has high reflectance.
In above-mentioned two embodiment, processor system may include a signal processing circuit, one 8/16 analog-digital converters,
Signal processing circuit connects analog-digital converter, and analog-digital converter connects iris of left eye imaging sensor, iris of right eye image sensing
Device, infrared distance sensor and infrared photosensitive sensor.To realize the communication of each module and signal processing circuit.Signal processing electricity
Road is also associated with a USB data transfer interface.Iris capturing module transfers data to host by USB data transfer interface
End.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. one kind being applied to iris capturing mould ranging control method in the block, iris capturing module is sent out using infrared distance sensor
The infrared light gone out carries out ranging, and iris capturing module shoots human eye iris image using iris image sensor,
It is characterized in that, during iris image sensor shooting human eye iris image, infrared distance sensor is sent out red
Outer photoperiodism reaches human eye and is switching less than between intelligent's eye；
So that the human eye iris image in the image that iris image sensor obtains under existing infrared light, and whether there is or not infrared lights
Under human eye iris image.
2. according to claim 1 a kind of applied to iris capturing mould ranging control method in the block, it is characterised in that：Rainbow
Film acquisition module will reach judgement parameter, the human eye iris image of human eye whether there is or not infrared light, be uploaded to host computer, host computer root
According to whether there is or not infrared lights to reach human eye, the human eye iris image under infrared light is picked out, is retained without the human eye iris image under infrared light,
As the image for subsequent processing.
3. according to claim 2 a kind of applied to iris capturing mould ranging control method in the block, it is characterised in that：It is red
The infrared light that outer distance measuring sensor is sent out periodically reaches human eye and is being infrared survey less than the method switched between intelligent's eye
Switch between work and halted state away from cycle sensor；
Infrared distance sensor connects a power module by a power control module, and the power control module is equipped with a timing
Unit,
Power control module is controlled power-on time, is periodically powered to infrared distance sensor by timing unit.
4. according to claim 2 a kind of applied to iris capturing mould ranging control method in the block, it is characterised in that：It is red
The infrared light that outer distance measuring sensor is sent out periodically reaches human eye and is being infrared survey less than the method switched between intelligent's eye
Light extraction light path away from sensor is periodically blocked；
Iris capturing module further includes a driving motor, and one is fixed in the shaft of the driving motor can block the infrared survey
Shielding plate away from the infrared light that sensor is sent out；
Driving motor drive shaft rotates, and to drive shielding plate rotation thereon, and then infrared distance sensor is made to send out
Infrared light is periodically blocked.
5. one kind being applied to iris capturing mould range unit in the block, including an iris capturing module, the iris capturing module
Including a processor system, iris image sensor of the processor system connection one for acquiring iris image, the place
Reason device system is also connected with an infrared distance sensor for measuring the distance between human eye and camera lens, which is characterized in that described
Infrared distance sensor connects a power module by a power control module, and the power control module is equipped with a timing list
Member；
Power control module is controlled power-on time, is periodically powered to infrared distance sensor by timing unit；
So that the infrared light that infrared distance sensor is sent out periodically reaches human eye and is switching less than between intelligent's eye；
So that the human eye iris image in the image that iris image sensor obtains under existing infrared light, and whether there is or not infrared lights
Under human eye iris image.
6. according to claim 5 a kind of applied to iris capturing mould range unit in the block, it is characterised in that：The confession
Electric control module at least switches a power supply state in every 2 seconds.
7. according to claim 5 a kind of applied to iris capturing mould range unit in the block, it is characterised in that：Iris is adopted
It includes a shell to collect module, and shell is fixedly arranged in the middle of infrared distance sensor；There are two iris image sensors, one of them
Iris image sensor is fixed on the right side of infrared distance sensor, for acquiring iris of right eye image, another iris image
Sensor is fixed on the left side of infrared distance sensor, for acquiring iris of left eye image；Two iris image sensor difference
Connection processing device system.This patent is set there are two iris image sensor, the iris image of eyes can be acquired, in addition, this patent
The position for optimizing iris image sensor keeps collection result more accurate.
It is provided with the first trepanning on the left of shell, is provided with the second trepanning on the right side of shell, the iris for acquiring iris of left eye image
The camera lens of imaging sensor is stretched out by the first trepanning, in acquisition iris of right eye image iris image sensor camera lens by second
Trepanning is stretched out；
The inner surface of shell is equipped with a sliding slot, the camera lens of iris of left eye imaging sensor, the mirror of iris of right eye imaging sensor
The rear of head is respectively provided with a sliding rail that can be slided along sliding slot；Iris capturing module further includes that a driving sliding rail moves on the chute
Driving mechanism；
First trepanning, the second trepanning are strip trepanning.
8. another kind is applied to iris capturing mould range unit in the block, including an iris capturing module, the iris capturing mould
Block includes a processor system, iris image sensor of the processor system connection one for acquiring iris image, described
Processor system is also connected with an infrared distance sensor for measuring the distance between human eye and camera lens, which is characterized in that institute
It further includes a driving motor to state iris capturing module, and one is fixed in the shaft of the driving motor can block the infrared distance measurement
The shielding plate for the infrared light that sensor is sent out；
Driving motor drive shaft rotates, and to drive shielding plate rotation thereon, and then infrared distance sensor is made to send out
Infrared light is periodically blocked；
So that the infrared light that infrared distance sensor is sent out periodically reaches human eye and is switching less than between intelligent's eye；
So that the human eye iris image in the image that iris image sensor obtains under existing infrared light, and whether there is or not infrared lights
Under human eye iris image.
9. according to claim 8 another applied to iris capturing mould range unit in the block, it is characterised in that：Driving
Motor is fixed on the side wall of infrared distance sensor, and the length direction of the shaft and the infrared light of the infrared range-measurement system are sent out
Penetrate that direction is identical, the shielding plate is located at the front of the infrared distance sensor light-emitting window；
The shielding plate is preferably in disc-shaped, is provided with multiple light-transmitting openings on shielding plate, multiple light-transmitting openings are with the central axis of shaft
Centered on, surround ring-type；
The bore of the light-transmitting opening is not less than the bore of the light-emitting window, and the minimum range between adjacent two light-transmitting openings is not small
In the bore value of a light-transmitting opening；
The distance of the center of the light-emitting window to the shaft is equal to the center of the light-transmitting opening to the distance of the shaft.
10. according to claim 9 another applied to iris capturing mould range unit in the block, it is characterised in that：Institute
State driving motor rotating speed be every 2 seconds at least 1 turn, there are two the light-transmitting openings on shielding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285615.3A CN108363940B (en) | 2017-12-07 | 2017-12-07 | Distance measurement control method and device applied to iris acquisition module |
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|---|---|---|---|
| CN201711285615.3A CN108363940B (en) | 2017-12-07 | 2017-12-07 | Distance measurement control method and device applied to iris acquisition module |
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| CN108363940B CN108363940B (en) | 2021-11-30 |
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