TWI449415B - Image capture system and method - Google Patents
Image capture system and method Download PDFInfo
- Publication number
- TWI449415B TWI449415B TW100120302A TW100120302A TWI449415B TW I449415 B TWI449415 B TW I449415B TW 100120302 A TW100120302 A TW 100120302A TW 100120302 A TW100120302 A TW 100120302A TW I449415 B TWI449415 B TW I449415B
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- image
- sensing
- generating
- image sensor
- Prior art date
Links
Landscapes
- Image Input (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Studio Devices (AREA)
Description
本發明是有關一種影像擷取系統以及方法,特別是一種可同時獲得不同灰階值之多個影像之影像擷取系統以及方法。The present invention relates to an image capture system and method, and more particularly to an image capture system and method for simultaneously obtaining multiple images of different grayscale values.
影像擷取系統的快速普及,使得許多物件能夠以數位化的方式儲存。然而,欲擷取物件之亮部區域以及暗部區域之亮度差異較大時,例如X光片,習知之影像擷取系統無法以相同的影像擷取參數獲得清晰呈現亮部區域以及暗部區域之細節之數位影像。The rapid adoption of image capture systems has enabled many objects to be stored in a digital manner. However, when the brightness difference between the bright area and the dark part of the object is large, such as an X-ray film, the conventional image capturing system cannot obtain the details of the bright and dark areas with the same image capturing parameters. Digital image.
舉例而言,為了呈現暗部區域之細節,使用者可能提供較亮之照明或較長之曝光時間以獲得較亮之數位影像。此時,數位影像中之亮部區域可能過度曝光而一片亮白,因而無法呈現原物件中之亮部區域之細節。相反的,為了呈現亮部區域之細節,使用者可能提供較暗之照明或較短之曝光時間以獲得較暗之數位影像。此時,數位影像中之暗部區域可能曝光不足而一片黑暗,因而無法呈現原物件中之暗部區域之細節。為了克服上述問題,習知之影像擷取系統是以不同的影像擷取參數,對物件進行多次影像擷取操作以獲得分別呈現亮部區域以及暗部區域細節之多個影像。如此造成影像數位化之操作缺乏效率的問題。For example, to present details of the dark region, the user may provide a brighter illumination or a longer exposure time to obtain a brighter digital image. At this time, the bright areas in the digital image may be overexposed and bright, so that the details of the bright areas in the original object cannot be presented. Conversely, to present details of the highlight area, the user may provide a darker illumination or a shorter exposure time to obtain a darker digital image. At this time, the dark portion of the digital image may be underexposed and dark, so that the details of the dark portion of the original object cannot be presented. In order to overcome the above problems, the conventional image capturing system uses different image capturing parameters to perform multiple image capturing operations on the object to obtain multiple images respectively showing the details of the bright portion and the dark portion. This causes the problem of inefficient operation of the image digitization operation.
綜上所述,如何同時獲得不同灰階值之多個影像便是目前極需努力的目標。In summary, how to obtain multiple images of different grayscale values at the same time is the goal that is currently in great need.
本發明提供一種影像擷取系統以及方法,其是提供包含不同波長範圍以及光強度之第一光線以及一第二光線之照明光,並感測第一光線以及第二光線,以分別產生不同灰階值之一第一感測影像以及一第二感測影像。因此,本發明之影像擷取系統以及方法可在一次影像擷取之操作中即可獲得不同灰階值之多個影像。The present invention provides an image capturing system and method, which provide illumination light including a first light and a second light of different wavelength ranges and light intensities, and senses the first light and the second light to respectively generate different grays. One of the order values is a first sensing image and a second sensing image. Therefore, the image capturing system and method of the present invention can obtain multiple images of different grayscale values in one image capturing operation.
本發明一實施例之影像擷取系統包含一光源以及一影像感測器。光源用以產生一照明光,其至少包含一第一光線以及一第二光線,且第一光線以及第二光線之波長範圍以及光強度相異。影像感測器用以感測經一物件反射或透射物件之第一光線以及第二光線,並產生不同灰階值之一第一感測影像以及一第二感測影像,其中該第一感測影像以及該第二感測影像對應該物件之一相同特定區域。An image capturing system according to an embodiment of the invention includes a light source and an image sensor. The light source is configured to generate an illumination light, and the light source includes at least a first light and a second light, and the wavelength ranges of the first light and the second light and the light intensity are different. The image sensor is configured to sense a first light and a second light that are reflected or transmitted through an object, and generate one of a first gray sensing value and a second sensing image, wherein the first sensing image The image and the second sensed image correspond to a particular area of one of the objects.
本發明另一實施例之影像擷取方法包含以一光源產生一照明光,其至少包含一第一光線以及一第二光線,且第一光線以及第二光線之波長範圍以及光強度相異;以及,以一影像感測器分別感測經一物件反射或透射物件之第一光線以及第二光線,以產生不同灰階值之一第一感測影像以及一第二感測影像,其中該第一感測影像以及該第二感測影像對應該物件之一相同特定區域。An image capturing method according to another embodiment of the present invention includes: generating, by a light source, an illumination light comprising at least a first light and a second light, and the wavelength ranges and light intensities of the first light and the second light are different; And sensing, by the image sensor, the first light and the second light reflected or transmitted through the object to generate a first sensing image and a second sensing image, wherein the first sensing image and the second sensing image are different The first sensing image and the second sensing image correspond to a specific area of one of the objects.
以下藉由具體實施例配合所附的圖式詳加說明,當更容易瞭解本發明之目的、技術內容、特點及其所達成之功效。The purpose, technical contents, features, and effects achieved by the present invention will become more apparent from the detailed description of the appended claims.
請參照圖1,本發明之一實施例之影像擷取系統包含一光源11以及一影像感測器12。光源11用以產生一照明光L。舉例而言,光源11可為發光二極體或冷陰極螢光燈(cold cathode fluorescent lamp,CCFL)。特別的是,照明光L至少包含一第一光線LR以及一第二光線LB,且第一光線LR以及第二光線LB之波長範圍以及光強度相異。於一實施例中,光源11可包含一第一發光元件11R以及一第二發光元件11B,其分別產生所需之第一光線LR以及第二光線LB。或者,請參照圖2,光源11可包含一發光元件111以及一濾光元件112。發光元件111用以產生包含第一光線LR以及第二光線LB之波長範圍之多波長光線LM。濾光元件112則設置於發光元件111之出光側,用以過濾發光元 件111所產生之多波長光線LM,以產生所需之照明光L,亦即包含不同波長範圍以及光強度之第一光線LR以及第二光線LB。Referring to FIG. 1 , an image capturing system according to an embodiment of the present invention includes a light source 11 and an image sensor 12 . The light source 11 is used to generate an illumination light L. For example, the light source 11 can be a light emitting diode or a cold cathode fluorescent lamp (CCFL). In particular, the illumination light L includes at least a first light ray LR and a second light ray LB, and the wavelength ranges and light intensities of the first light ray LR and the second light ray LB are different. In one embodiment, the light source 11 can include a first light-emitting element 11R and a second light-emitting element 11B that respectively generate a desired first light ray LR and a second light ray LB. Alternatively, referring to FIG. 2, the light source 11 can include a light emitting element 111 and a filter element 112. The light-emitting element 111 is configured to generate a multi-wavelength light LM including a first light ray LR and a second light ray LB. The filter element 112 is disposed on the light exiting side of the light emitting element 111 for filtering the light emitting element The multi-wavelength light LM generated by the piece 111 is used to generate the desired illumination light L, that is, the first light ray LR and the second light LB including different wavelength ranges and light intensities.
影像感測器12則用以感測經一物件20反射或透射物件20之第一光線LR以及第二光線LB,並分別產生一第一感測影像以及一第二感測影像。於一實施例中,影像感測器12可為一彩色影像感測器,因此,其可分別感測紅光、綠光以及藍光。或者,影像感測器可包含一第一影像感測元件以及一第二影像感測元件,以分別感測第一光線LR以及第二光線LB,並產生第一感測影像以及第二感測影像。於一實施例中,影像感測器12可為一電荷耦合元件(Charge Coupled Device,CCD)、互補式金屬氧化物半導體(Complementary Metal Oxide Semiconductor,CMOS)感測器或接觸式影像感測器(Contact Image Sensor,CIS)。The image sensor 12 is configured to sense the first light LR and the second light LB of the object 20 reflected or transmitted through an object 20, and respectively generate a first sensing image and a second sensing image. In one embodiment, the image sensor 12 can be a color image sensor, so that it can sense red, green, and blue light, respectively. Alternatively, the image sensor may include a first image sensing component and a second image sensing component to respectively sense the first light LR and the second light LB, and generate the first sensing image and the second sensing. image. In one embodiment, the image sensor 12 can be a Charge Coupled Device (CCD), a Complementary Metal Oxide Semiconductor (CMOS) sensor, or a contact image sensor ( Contact Image Sensor, CIS).
舉例而言,物件20可為一X光片、底片或灰階影像。第一光線LR可為紅光波長範圍之紅光;第二光線LB可為藍光波長範圍之藍光,且第二光線LB之光強度僅為第一光線LR之光強度的50%。當包含第一光線LR以及第二光線LB之照明光L穿透物件20並被影像感測器12擷取時,感測第一光線LR可獲得較亮之第一感測影像,亦即灰階較高之影像;感測第二光線LB則可獲得較暗之第二感測影像,亦即灰階較低之影像。因此,本發明之影像擷取系統能夠在一次影像擷取之操作中即獲得不同灰階值之多個影像,因而提升影像擷取操作之效率。For example, object 20 can be an X-ray film, a negative film, or a grayscale image. The first light ray LR may be red light in the red wavelength range; the second light LB may be blue light in the blue light wavelength range, and the light intensity of the second light LB is only 50% of the light intensity of the first light LR. When the illumination light L including the first light LR and the second light LB penetrates the object 20 and is captured by the image sensor 12, the first light LR is sensed to obtain a brighter first sensing image, that is, gray. The higher order image; the second light LB is sensed to obtain a darker second sensed image, that is, a lower grayscale image. Therefore, the image capturing system of the present invention can obtain multiple images of different grayscale values in one image capturing operation, thereby improving the efficiency of the image capturing operation.
需注意者,上述實施例僅提供包含不同光強度之紅光以及藍光之照明光,並分別感測紅光以及藍光以獲得二個不同灰階值之影像。然而,本發明所屬技術領域者可以理解的是,同時提供包含多種波長範圍以及光強度之照明光,例如紅光、綠光以及藍光,甚至紫外光或紅外光,即可同時獲得二個以上不同灰階值之影像。It should be noted that the above embodiment only provides illumination light including red light of different light intensities and blue light, and respectively senses red light and blue light to obtain images of two different gray scale values. However, it will be understood by those skilled in the art that simultaneously providing illumination light including a plurality of wavelength ranges and light intensities, such as red light, green light, and blue light, or even ultraviolet light or infrared light, can simultaneously obtain two or more different An image of grayscale values.
於一實施例中,本發明之影像擷取系統更包含一影像處理模組13,其與影像感測器12電性連接。影像處理模組13可對獲得自影像感測器12之第一感測影像以及第二感測影像進行各種影像處理。舉例而言, 影像處理模組13可將清楚呈現暗部區域細節之第一感測影像與清楚呈現亮部區域細節之第二感測影像合成,以獲得同時清楚呈現亮部區域以及暗部區域之一合成影像。In one embodiment, the image capture system of the present invention further includes an image processing module 13 electrically coupled to the image sensor 12. The image processing module 13 can perform various image processing on the first sensing image and the second sensing image obtained from the image sensor 12 . For example, The image processing module 13 can synthesize the first sensing image that clearly shows the details of the dark region and the second sensing image that clearly shows the details of the bright region to obtain a composite image in which one of the bright region and the dark region is clearly displayed.
於一實施例中,本發明之影像擷取系統可包含一光學透鏡14,其設置於影像感測器12之前端。光學透鏡14可聚焦從物件20反射或透射物件20之照明光L於影像感測器12。舉例而言,光學透鏡14可為一桿狀透鏡(rod lens)或單透鏡(single lens)。In one embodiment, the image capture system of the present invention can include an optical lens 14 disposed at a front end of the image sensor 12. The optical lens 14 can focus the illumination light L that reflects or transmits the object 20 from the object 20 to the image sensor 12. For example, the optical lens 14 can be a rod lens or a single lens.
請再參照圖2,本發明之影像擷取系統可包含一驅動裝置15。於一實施例中,驅動裝置15可影像感測器12連接,以驅動影像感測器12沿著軌道151相對於物件20移動,以對物件20進行掃描。但不限於此,驅動裝置15亦可與一放置物件20之平台連接,並驅動平台使物件20相對於影像感測器12移動,亦可達到影像感測器12對物件20進行掃描之目的。Referring again to FIG. 2, the image capture system of the present invention can include a drive device 15. In an embodiment, the driving device 15 can be connected to the image sensor 12 to drive the image sensor 12 to move along the track 151 relative to the object 20 to scan the object 20. However, the driving device 15 can also be connected to a platform on which the object 20 is placed, and the platform can be driven to move the object 20 relative to the image sensor 12, and the image sensor 12 can also scan the object 20.
請參照圖1以及圖3,說明本發明一實施例之影像擷取方法。首先,以一光源11產生一照明光。照明光至少包含不同波長範圍以及光強度之一第一光線LR以及一第二光線LB(S31)。接著,以一影像感測器12分別感測經一物件20反射或透射物件20之第一光線LR以及第二光線LB,以產生不同灰階值之一第一感測影像以及一第二感測影像(S32)。上述步驟之詳細說明如前所述,在此不再贅述。較佳者,本發明之影像擷取方法可包含影像處理步驟,以對不同灰階值之第一感測影像以及第二感測影像進行影像處理(S33),例如影像合成。Referring to FIG. 1 and FIG. 3, an image capturing method according to an embodiment of the present invention is described. First, an illumination light is generated by a light source 11. The illumination light includes at least one of a different wavelength range and a light intensity, a first light ray LR and a second light ray LB (S31). Then, the image sensor 12 senses the first light LR and the second light LB reflected or transmitted through the object 20 to generate a first sense image and a second sense of different gray scale values. Measure the image (S32). The detailed description of the above steps is as described above and will not be repeated here. Preferably, the image capturing method of the present invention may include an image processing step of performing image processing (S33), such as image synthesis, on the first sensing image and the second sensing image of different grayscale values.
綜合上述,本發明之影像擷取系統以及方法是提供包含不同波長範圍以及光強度之多種光線之照明光照射物件,再分別感測從物件反射或透射物件之不同波長範圍之光線即可產生多個不同灰階值之感測影像。因此,本發明之影像擷取系統以及方法可在一次影像擷取之操作中即可獲得不同灰階值之多個影像,大幅提升影像擷取操作之效率。In summary, the image capturing system and method of the present invention provides an illumination light illuminating object comprising a plurality of light rays of different wavelength ranges and light intensities, and respectively sensing light rays of different wavelength ranges reflected or transmitted from the object to generate more light. Sensing images of different grayscale values. Therefore, the image capturing system and method of the present invention can obtain multiple images of different grayscale values in one image capturing operation, thereby greatly improving the efficiency of the image capturing operation.
以上所述之實施例僅是為說明本發明之技術思想及特點,其目的 在使熟習此項技藝之人士能夠瞭解本發明之內容並據以實施,當不能以之限定本發明之專利範圍,即大凡依本發明所揭示之精神所作之均等變化或修飾,仍應涵蓋在本發明之專利範圍內。The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose thereof </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; Within the scope of the patent of the present invention.
11‧‧‧光源11‧‧‧Light source
111‧‧‧發光元件111‧‧‧Lighting elements
112‧‧‧濾光元件112‧‧‧ Filter elements
11B‧‧‧第二發光元件11B‧‧‧Second light-emitting element
11R‧‧‧第一發光元件11R‧‧‧First light-emitting element
12‧‧‧影像感測器12‧‧‧Image sensor
13‧‧‧影像處理模組13‧‧‧Image Processing Module
14‧‧‧光學透鏡14‧‧‧ optical lens
15‧‧‧驅動裝置15‧‧‧ drive
151‧‧‧軌道151‧‧‧ Track
20‧‧‧物件20‧‧‧ objects
L‧‧‧照明光L‧‧‧Lights
LB‧‧‧第二光線LB‧‧‧second light
LM‧‧‧多波長光線LM‧‧‧Multi-wavelength light
LR‧‧‧第一光線LR‧‧‧first light
S31~S33‧‧‧影像擷取方法S31~S33‧‧‧Image acquisition method
圖1為一示意圖,顯示本發明一實施例之影像擷取系統。1 is a schematic view showing an image capturing system according to an embodiment of the present invention.
圖2為一示意圖,顯示本發明另一實施例之影像擷取系統。2 is a schematic view showing an image capturing system according to another embodiment of the present invention.
圖3為一流程圖,顯示本發明一實施例之影像擷取方法。FIG. 3 is a flow chart showing an image capturing method according to an embodiment of the present invention.
11...光源11. . . light source
11B...第二發光元件11B. . . Second illuminating element
11R...第一發光元件11R. . . First illuminating element
12...影像感測器12. . . Image sensor
13...影像處理模組13. . . Image processing module
14...光學透鏡14. . . optical lens
20...物件20. . . object
L...照明光L. . . Illumination light
LB...第二光線LB. . . Second light
LR...第一光線LR. . . First light
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW100120302A TWI449415B (en) | 2011-06-10 | 2011-06-10 | Image capture system and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW100120302A TWI449415B (en) | 2011-06-10 | 2011-06-10 | Image capture system and method |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201251439A TW201251439A (en) | 2012-12-16 |
TWI449415B true TWI449415B (en) | 2014-08-11 |
Family
ID=48139468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW100120302A TWI449415B (en) | 2011-06-10 | 2011-06-10 | Image capture system and method |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI449415B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI514875B (en) * | 2014-10-21 | 2015-12-21 | Avision Inc | Image sensing device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI819631B (en) * | 2022-05-30 | 2023-10-21 | 友達光電股份有限公司 | Image sensing device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4329152B2 (en) * | 1999-04-12 | 2009-09-09 | ソニー株式会社 | Component recognition device |
-
2011
- 2011-06-10 TW TW100120302A patent/TWI449415B/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4329152B2 (en) * | 1999-04-12 | 2009-09-09 | ソニー株式会社 | Component recognition device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI514875B (en) * | 2014-10-21 | 2015-12-21 | Avision Inc | Image sensing device |
Also Published As
Publication number | Publication date |
---|---|
TW201251439A (en) | 2012-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10605661B2 (en) | Image capturing with filters of overlapping passbands | |
JP6939000B2 (en) | Imaging device and imaging method | |
CN107110782B (en) | Defect inspection method and defect inspection apparatus for wide band gap semiconductor substrate | |
TWI565323B (en) | Imaging device for distinguishing foreground and operating method thereof, and image sensor | |
TWI509261B (en) | Noncontact inspecting apparatus for light emitting diode and method thereof | |
JP2008268868A (en) | Image pick up device | |
JP2011233983A (en) | Imaging apparatus | |
JP2020060599A (en) | Imaging device assembly, three-dimensional shape measuring device and motion detection device, and method of measuring three-dimensional shape | |
TWI625588B (en) | Camera control device | |
TWI731206B (en) | Systems and methods for compensating for vignetting | |
JP2006527615A (en) | Method and apparatus for acquiring and processing an image of a tooth-like object | |
JP2009025189A (en) | Measuring instrument | |
JP2012120132A (en) | Imaging apparatus and program | |
TWI449415B (en) | Image capture system and method | |
CN110574368A (en) | Solid-state imaging device, imaging system, and object recognition system | |
CN109714542B (en) | Image forming method | |
CN103379273A (en) | Imaging device | |
JP7501364B2 (en) | Spectroscopic imaging device and fluorescence observation device | |
CN113329140A (en) | Compensating vignetting | |
JP5112702B2 (en) | Imaging apparatus, method, and program | |
CN103516962A (en) | Image capturing system and method | |
TWI519153B (en) | Image capture system and method | |
JP2011087136A (en) | Imaging apparatus and imaging system | |
CN102857699A (en) | Image capturing system and method | |
JP2014140117A (en) | Camera apparatus and imaging method |