CN110751611A - Method for calibrating display colors of endoscope system and endoscope system - Google Patents
Method for calibrating display colors of endoscope system and endoscope system Download PDFInfo
- Publication number
- CN110751611A CN110751611A CN201911059751.XA CN201911059751A CN110751611A CN 110751611 A CN110751611 A CN 110751611A CN 201911059751 A CN201911059751 A CN 201911059751A CN 110751611 A CN110751611 A CN 110751611A
- Authority
- CN
- China
- Prior art keywords
- display
- color
- card image
- image
- calibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003086 colorant Substances 0.000 title claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 22
- 238000004364 calculation method Methods 0.000 claims description 14
- 230000004075 alteration Effects 0.000 claims description 11
- 238000013507 mapping Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003709 image segmentation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Hardware Design (AREA)
- Endoscopes (AREA)
Abstract
The invention provides a method for calibrating display colors of an endoscope system and the endoscope system, wherein the endoscope system is connected with a display, and the calibration method comprises the following steps: carrying out white balance processing on a camera of the endoscope system; displaying a prestored color card image in a display, shooting the display by using a camera of an endoscope system, collecting the color card image, and comparing the collected color card image with a color block numerical value of a known color card image to obtain a calibration result of the display; and calibrating the display by adopting the calibration result of the display. By adopting the technical scheme of the invention, the automatic calibration of the display can be realized without adding any auxiliary equipment, and the method is easy for a user to operate quickly, and is simple and convenient.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a method for calibrating display colors of an endoscope system and the endoscope system.
Background
At present, a link for imaging in an endoscope system generally includes a camera sensor to acquire an image, an image processing host performs various processing on an original image, and the processed image is finally displayed on a display. In order to ensure that there is no color difference between the display picture and the object to be shot when the human eye observes, the color correction is generally required to be performed on the camera and the display. Endoscope camera system manufacturers typically calibrate the color of the camera when leaving the factory.
However, since the endoscope camera system manufacturers do not generally sell the displays in a matching manner, even if the displays are sold in a matching manner, the displays have color cast after being used for a long time, and the secondary display calibration is required. However, the display calibration requires a professional calibration tool, and a general hospital does not have corresponding technical capability to complete the work, so that manufacturers cannot limit the display connected with the endoscope camera system for the use end of the endoscope camera system, such as an operating room in the hospital, and the like, and cannot ensure that the finally presented image has no color difference (even if the camera is calibrated). For the user, the calibration of the color requires external assistance, and a new device is used for calibration, and the calibration is troublesome.
Disclosure of Invention
Aiming at the technical problems, the invention discloses a method for calibrating the color of a display of an endoscope system and the endoscope system, and provides a convenient and quick image calibration method for an endoscope system user under the condition of no equipment investment.
In contrast, the technical scheme adopted by the invention is as follows:
a method of calibrating display colors of an endoscope system, the endoscope system being coupled to a display, the method comprising the steps of:
carrying out white balance processing on a camera of the endoscope system;
displaying a prestored color card image in a display, shooting the display by using a camera of an endoscope system, collecting the color card image, and comparing the collected color card image with a color block numerical value of a known color card image to obtain a calibration result of the display; and calibrating the display by adopting the calibration result of the display. Where the corresponding R, G, B channel value for each patch of the pre-stored color card image is known.
Further, the color card image is a 24 color card; further, the 24 color card image may use a Colorchecker24 color card by X-Rite. In addition, 24 color chips is just one implementation, and any number of color blocks can be used, except that Colorchecker24 color chips are commercially available products that are relatively accepted and readily available on the market.
By adopting the technical scheme, the color of the display is directly calibrated through the endoscope system, and the method is simple and convenient without additional equipment investment.
Further, the endoscopic imaging system is white-balanced using a white balance board. It should be noted that the captured image is not overexposed, too bright, or too dark. As the white balance board, a white balance board available from Colorchecker passport manufactured by X-Rite corporation can be used.
As a further improvement of the present invention, the calibration result of the display is obtained by using the following algorithm:
dividing the acquired color card image, and dividing and extracting a color card image part from the background;
r, G, B numerical values of each color block of the color card image part are obtained;
and acquiring the mapping relation between the color block values of the acquired color card image and the color block values of the known color card image to obtain a correction coefficient of the display, namely a calibration result of the display.
Because the camera is calibrated, the data collected by the camera can truly reflect the color of the shot object, and the source of the color difference is mainly generated on the display.
As a further improvement of the present invention, a least square method is used to obtain a mapping relationship between color patch values of the acquired color patch image and color patch values of the known color patch image, and a relationship between the acquired color patch image data and the stored color patch image data is shown in formula (1):
wherein R ist、Gt、BtFor true colour block values of stored colour chip image dataM is a 3x3 coefficient matrix;
the matrix M is a correction coefficient matrix of the display, i.e. a calibration result of the display.
As a further improvement of the invention, the obtaining of the calibration result of the display comprises using a matrix conversion, LUT or 3D LUT to implement the linking of the camera color space and the display color space.
As a further improvement of the present invention, calibrating the display using the obtained calibration result of the display comprises: storing a calibration result as an ICC file which accords with an ICC (International Color Consortium) standard, and automatically loading the ICC file by using a Color management system of an endoscope operating system to finish the calibration of the display; or in the color calibration processing flow of the image processing unit of the endoscope system, the display calibration results are combined, so that the image generates color difference artificially, and the color difference of the display is further counteracted.
As a further improvement of the invention, the calibration method for the display color of the endoscope system further comprises the steps of carrying out noise reduction and enhancement processing on the image and/or adjusting the brightness, the contrast and the color of the display.
The invention also discloses an endoscope system, which comprises an endoscope camera and an image processing unit, wherein the endoscope camera shoots the prestored color card image displayed in the display,
the image processing host includes:
the image acquisition module acquires an image shot by the endoscope camera;
the image processing module is used for processing the acquired image, and comprises white balance, color difference correction, brightness adjustment and contrast adjustment;
and the display color difference calibration calculation module is used for comparing the acquired color card image with the color block numerical value of the known color card image to obtain the calibration result of the display.
As a further improvement of the present invention, the image processing module divides the acquired color card image, and divides and extracts the color card image part from the background;
the display color difference calibration calculation module comprises: and acquiring the mapping relation between the color block values of the acquired color card image and the color block values of the known color card image to obtain the correction coefficient of the display.
As a further improvement of the present invention, the display color difference calibration calculation module obtains a mapping relationship between color patch values of the acquired color patch image and color patch values of the known color patch image by using a least square method, and a relationship between the acquired color patch image data and the stored color patch image data is as shown in formula (1):
wherein R ist、Gt、BtM is a coefficient matrix of 3x3 for the true color block values of the stored color card image data; the matrix M is a correction coefficient matrix of the display, i.e. a calibration result of the display.
As a further improvement of the invention, the display chromatic aberration calibration calculation module stores the calibration result as an ICC file which meets the ICC standard and is automatically loaded by a color management system of an endoscope operating system, and the ICC file completes the calibration of the display; or the display color difference calibration calculation module sends the calibration result of the display to the image processing unit, and the image processing unit combines the calibration result of the display in the color calibration processing flow, so that the image generates the color difference artificially, and the color difference of the display is further counteracted.
Compared with the prior art, the invention has the beneficial effects that:
by adopting the technical scheme of the invention, the automatic calibration of the display can be realized without adding any auxiliary equipment, and the method is easy for a user to operate quickly, and is simple and convenient. In addition, calibration is recommended once a month without changing the display and adjusting the display settings.
Drawings
Fig. 1 is a schematic configuration diagram of an endoscope system of the present invention.
FIG. 2 is a process flow diagram of one embodiment of the invention.
FIG. 3 is another process flow diagram of an embodiment of the invention.
Detailed Description
Preferred embodiments of the present invention are described in further detail below.
As shown in fig. 1, an endoscope system, which is connected to a display, includes an endoscope camera and an image processing host, and performs color calibration on the display by using the endoscope system, including the following steps:
1. the endoscope imaging system is white-balanced using a white balance board. It should be noted that the captured image is not overexposed, too bright, or too dark. As the white balance board, a white balance board available from Colorchecker passport manufactured by X-Rite corporation can be used.
2. The 24-color card image stored in advance is displayed on the display by the endoscope image processing host. The corresponding R, G, B channel value for each color patch is known. The 24 color card image may use the Colorchecker24 color card from X-Rite. The arrangement of the 24 color chips is shown in table 1:
TABLE 1
| A1 | A2 | A3 | A4 | A5 | A6 |
| B1 | B2 | B3 | B4 | B5 | B6 |
| C1 | C2 | C3 | C4 | C5 | C6 |
| D1 | D2 | D3 | D4 | D5 | D6 |
The corresponding sRGB values are shown in Table 2 below:
TABLE 2
| A1 | Dark skin | (117 85 72) |
| A2 | Light skin | (195 147 129) |
| A3 | Blue sky | (92 123 156) |
| A4 | Foliage | (95 109 68) |
| A5 | Blue flower | (130 129 175) |
| A6 | Bluish green | (98 191 170) |
| B1 | Orange | (222 123 51) |
| B2 | Purplish blue | (72 92 174) |
| B3 | Moderate red | (195 83 97) |
| B4 | Purple | (93 61 105) |
| B5 | Yellow green | (162 190 65) |
| B6 | Orange yellow | (230 160 45) |
| C1 | Blue | (49 68 151) |
| C2 | Green | (76 152 74) |
| C3 | Red | (174 60 61) |
| C4 | Yellow | (241 201 25) |
| C5 | Magenta | (190 87 152) |
| C6 | Cyan | (0 137 167) |
| D1 | White | (249 249 244) |
| D2 | Neutral 8 | (203 204 203) |
| D3 | Neutral 6.5 | (162 163 162) |
| D4 | Neutral 5 | (121 121 121) |
| D5 | Neutral 3.5 | (84 86 87) |
| D6 | Black | (52 53 53) |
3. The display is photographed using an endoscopic camera to obtain a 24 color card picture.
4. And comparing the acquired picture with the color block value of the known color card to obtain the display calibration result. The specific algorithm is as follows.
a) And (5) image segmentation. The color card image part is divided and extracted from the background.
b) R, G, B values for each color patch were obtained.
The collected data and the stored data were fitted using the Least Squares Fitting method. The relationship between the collected data and the stored data is as shown in formula (1):
c) wherein R ist、Gt、BtM is a 3x3 matrix for the true patch values of the stored color card image data. Because the camera is calibrated, the data collected by the camera can truly reflect the color of the shot object, and the source of the color difference is mainly generated on the display.
d) The matrix M is the display rectification matrix.
The above algorithm is only one method for connecting the camera color space and the display color space, and in addition, the LUT or the 3D LUT may be used to connect the two color spaces.
5. The obtained display calibration result can be processed in the following two ways, so as to achieve the same effect of calibrating the display.
a) And storing the calibration result as an ICC file which meets the ICC standard, and automatically loading the ICC file by using a color management system of an operating system, thereby completing the calibration of the display. (ICC is a shorthand for International Color Consortium)
b) In the color calibration processing flow of the image processing host, the display calibration results are combined, so that the image generates color difference artificially, and the color difference of the display is further counteracted.
Further, the image processing host comprises an image acquisition module, an image processing module and a display color difference calibration calculation module.
It is possible that the display is connected to a standard computer device or image processing host of the endoscope in this embodiment. The precondition is that the computer equipment or the image processing host outputs the sRGB color space image.
The endoscope camera can be an optical lens or an electronic endoscope.
An image acquisition module: and the image acquisition module in the endoscope image processing host is used for acquiring images of the endoscope camera.
An image processing module: and the image processing module in the endoscope image processing host. The module performs necessary processing on the acquired raw data, including white balance, color difference correction, brightness adjustment, contrast adjustment, and the like. The digital image output by the module can be regarded as an image which can accurately feed back the color of a real shot object. The color space is sRGB. In addition, the images may be further adjusted to meet the individual requirements of the doctor, according to the doctor's preference. If the image is adjusted, the input of the display color difference calculation module is ensured to be the unadjusted image.
And the display color difference calculation module adopts an optimization algorithm (most commonly a least square method) to obtain a color correction 3x3 coefficient matrix.
Further, the image processing flow may be as shown in fig. 2, that is, the image acquisition module acquires an original image, the image processing module performs white balance processing, then performs camera chromatic aberration correction and display chromatic aberration correction according to the above method, and performs noise reduction and enhancement processing, and brightness, contrast, and color adjustment processing after the correction is completed. Certainly, if a manufacturer separately calibrates the camera before leaving the factory, the calibration of the camera chromatic aberration does not need to be performed.
The camera chromatic aberration correction and the display chromatic aberration correction are combined into one step to reduce the calculation amount of the system. If the camera chromatic aberration correction and the display correction both adopt a 3x3 matrix method, the two matrixes can be multiplied to obtain a combined color correction matrix M-M1×M3Wherein M is1Correction of the matrix for display chromatic aberration, M2And (4) a camera chromatic aberration correction matrix. That is, the image processing flow may be as shown in fig. 3, that is, the image acquisition module acquires an original image, the image processing module performs white balance processing, then performs color difference correction according to the above method, and performs noise reduction and enhancement processing, and brightness, contrast, and color adjustment processing after the correction is completed.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A method for calibrating the color of a display of an endoscopic system, the endoscopic system being coupled to the display, the method comprising: the calibration method comprises the following steps:
carrying out white balance processing on a camera of the endoscope system;
displaying a prestored color card image in a display, shooting the display by using a camera of an endoscope system, collecting the color card image, and comparing the collected color card image with a color block numerical value of a known color card image to obtain a calibration result of the display; and calibrating the display by adopting the calibration result of the display.
2. The method for calibrating display colors of an endoscope system according to claim 1, characterized in that: the calibration result of the display is obtained by adopting the following algorithm:
dividing the acquired color card image, and dividing and extracting a color card image part from the background;
r, G, B numerical values of each color block of the color card image part are obtained;
and acquiring the mapping relation between the color block values of the acquired color card image and the color block values of the known color card image to obtain the correction coefficient of the display.
3. The method for calibrating display colors of an endoscope system according to claim 2, characterized in that: the mapping relation between the color block values of the acquired color card image and the color block values of the known color card image is acquired by adopting a least square method, and the relation between the acquired color card image data and the stored color card image data is shown as the formula (1):
wherein R ist、Gt、BtThe real color block value of the stored color card image data is used, and M is a coefficient matrix;
the matrix M is a correction coefficient matrix of the display.
4. The method for calibrating display colors of an endoscope system according to claim 1, characterized in that: the obtaining of the calibration result of the display comprises connecting the camera color space and the display color space by using matrix conversion, LUT or 3D LUT.
5. The method for calibrating display colors of an endoscope system according to any of claims 1 to 4, characterized in that: calibrating the display using the obtained calibration result of the display comprises: storing the calibration result as an ICC (ICC) file, and automatically loading the ICC file by using a color management system of an endoscope operating system to finish the calibration of the display; or in the color calibration processing flow of the image processing unit of the endoscope system, the display calibration results are combined, so that the image generates color difference artificially, and the color difference of the display is further counteracted.
6. The method for calibrating display colors of an endoscope system according to claim 5, characterized in that: and the method also comprises the steps of carrying out noise reduction and enhancement processing on the image and/or adjusting the brightness, the contrast and the color of the display.
7. An endoscopic system characterized by: the endoscope system comprises an endoscope camera and an image processing host,
the image processing host displays a pre-stored card image on a display;
the endoscope camera takes a pre-stored color chip image displayed in the display,
the image processing host includes:
the image acquisition module acquires an image shot by the endoscope camera;
the image processing module is used for processing the acquired image;
and the display color difference calibration calculation module is used for comparing the acquired color card image with the color block numerical value of the known color card image to obtain the calibration result of the display.
8. An endoscope system according to claim 7 and wherein: the image processing module divides the acquired color card image and divides and extracts the color card image part from the background;
and the display chromatic aberration calibration calculation module acquires the mapping relation between the acquired color block values of the color card image and the color block values of the known color card image to obtain the correction coefficient of the display.
9. An endoscope system according to claim 8 and wherein: the display color difference calibration calculation module adopts a least square method to obtain the mapping relation between the color block value of the acquired color card image and the color block value of the known color card image, and the relation between the acquired color card image data and the stored color card image data is shown as the formula (1):
wherein R ist、Gt、BtThe real color block value of the stored color card image data is used, and M is a coefficient matrix;
the matrix M is a correction coefficient matrix of the display.
10. An endoscope system according to claim 8 and wherein: the display chromatic aberration calibration calculation module stores the calibration result as an ICC file which meets the ICC standard, and the ICC file is automatically loaded through a color management system of an endoscope operation system to finish the calibration of the display; or the display color difference calibration calculation module sends the calibration result of the display to the image processing unit, and the image processing unit combines the calibration result of the display in the color calibration processing flow, so that the image generates the color difference artificially, and the color difference of the display is further counteracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059751.XA CN110751611A (en) | 2019-11-01 | 2019-11-01 | Method for calibrating display colors of endoscope system and endoscope system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059751.XA CN110751611A (en) | 2019-11-01 | 2019-11-01 | Method for calibrating display colors of endoscope system and endoscope system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110751611A true CN110751611A (en) | 2020-02-04 |
Family
ID=69281789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911059751.XA Pending CN110751611A (en) | 2019-11-01 | 2019-11-01 | Method for calibrating display colors of endoscope system and endoscope system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110751611A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726600A (en) * | 2020-06-30 | 2020-09-29 | 深圳市精锋医疗科技有限公司 | Image processing method, device and storage medium for stereoscopic endoscope |
| CN113362747A (en) * | 2021-03-31 | 2021-09-07 | 联想(北京)有限公司 | Information processing method, device and equipment and storage medium |
| CN116030757A (en) * | 2023-03-29 | 2023-04-28 | 北京七维视觉传媒科技有限公司 | LED display screen color correction method and device, computer equipment and storage medium |
| CN116612199A (en) * | 2023-07-20 | 2023-08-18 | 中国科学院光电技术研究所 | On-orbit combined color calibration method for deep space exploration color camera |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437097A (en) * | 2002-02-07 | 2003-08-20 | 唯特科技股份有限公司 | Image color correcting device and method |
| CN101170939A (en) * | 2005-05-23 | 2008-04-30 | 奥林巴斯医疗株式会社 | Image processing device, endoscope device, and color balance adjusting method |
| CN102883650A (en) * | 2010-06-25 | 2013-01-16 | 奥林巴斯医疗株式会社 | Endoscope device |
| JP2013244044A (en) * | 2012-05-23 | 2013-12-09 | Olympus Corp | Endoscope system, endoscope apparatus, and program |
| CN107730562A (en) * | 2017-11-09 | 2018-02-23 | 青岛海信移动通信技术股份有限公司 | A kind of preview calibration method of view data, device and system |
| CN108712639A (en) * | 2018-05-29 | 2018-10-26 | 凌云光技术集团有限责任公司 | Image color correction method, apparatus and system |
| JP2019136412A (en) * | 2018-02-14 | 2019-08-22 | 富士フイルム株式会社 | Endoscope system, endoscope management apparatus, and calibration method |
-
2019
- 2019-11-01 CN CN201911059751.XA patent/CN110751611A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437097A (en) * | 2002-02-07 | 2003-08-20 | 唯特科技股份有限公司 | Image color correcting device and method |
| CN101170939A (en) * | 2005-05-23 | 2008-04-30 | 奥林巴斯医疗株式会社 | Image processing device, endoscope device, and color balance adjusting method |
| CN102883650A (en) * | 2010-06-25 | 2013-01-16 | 奥林巴斯医疗株式会社 | Endoscope device |
| JP2013244044A (en) * | 2012-05-23 | 2013-12-09 | Olympus Corp | Endoscope system, endoscope apparatus, and program |
| CN107730562A (en) * | 2017-11-09 | 2018-02-23 | 青岛海信移动通信技术股份有限公司 | A kind of preview calibration method of view data, device and system |
| JP2019136412A (en) * | 2018-02-14 | 2019-08-22 | 富士フイルム株式会社 | Endoscope system, endoscope management apparatus, and calibration method |
| CN108712639A (en) * | 2018-05-29 | 2018-10-26 | 凌云光技术集团有限责任公司 | Image color correction method, apparatus and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726600A (en) * | 2020-06-30 | 2020-09-29 | 深圳市精锋医疗科技有限公司 | Image processing method, device and storage medium for stereoscopic endoscope |
| CN113362747A (en) * | 2021-03-31 | 2021-09-07 | 联想(北京)有限公司 | Information processing method, device and equipment and storage medium |
| CN116030757A (en) * | 2023-03-29 | 2023-04-28 | 北京七维视觉传媒科技有限公司 | LED display screen color correction method and device, computer equipment and storage medium |
| CN116612199A (en) * | 2023-07-20 | 2023-08-18 | 中国科学院光电技术研究所 | On-orbit combined color calibration method for deep space exploration color camera |
| CN116612199B (en) * | 2023-07-20 | 2024-02-06 | 中国科学院光电技术研究所 | On-orbit combined color calibration method for deep space exploration color camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110751611A (en) | Method for calibrating display colors of endoscope system and endoscope system | |
| CN107197225B (en) | Color digital camera white balance correcting based on chromatic adaptation model | |
| US8462227B2 (en) | Digital camera module white balance calibration method and apparatus using only single illumination source data | |
| US9342872B2 (en) | Color correction parameter computation method, color correction parameter computation device, and image output system | |
| US20080043117A1 (en) | Method and Apparatus for Compensating Image Sensor Lens Shading | |
| WO2005101853A1 (en) | Imaging device | |
| CN109979382B (en) | Screen transmission spectrum-based color correction method and system for under-screen imaging system | |
| CN105578166A (en) | Color temperature determination method and device | |
| CN114208162A (en) | System for characterizing ambient lighting | |
| US7898699B2 (en) | Electronic endoscope apparatus | |
| US7701462B2 (en) | Simple and robust color saturation adjustment for digital images | |
| CN101873504A (en) | Method for correcting automatic white balance | |
| US8169475B2 (en) | Image processing system, imaging system, and microscope imaging system | |
| CN116506989A (en) | Color temperature adjusting method, device, computer equipment and storage medium | |
| Kao et al. | Color reproduction for digital imaging systems | |
| US20040119860A1 (en) | Method of colorimetrically calibrating an image capturing device | |
| EP3182691B1 (en) | Method of encoding raw color coordinates provided by a camera representing colors of a scene having two different illuminations | |
| CN111955004B (en) | Color correction device | |
| CN110809145B (en) | Image brightness conversion method, device and equipment based on Craik-O' Brien effect | |
| Hung | Color theory and its application to digital still cameras | |
| EP2204980B1 (en) | Image processing system, imaging system, and microscope imaging system | |
| JP2006238335A (en) | Information processing method | |
| EP4275578A1 (en) | Method, processor, and medical fluorescence observation device using a color-dependent color conversion function | |
| EP4275577A1 (en) | Method, processor, and medical fluorescence observation device using two color images and color cameras for fluorescence and white-light | |
| EP4275580A1 (en) | Method, processor, and medical fluorescence observation device using two color images to record fluorescence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |