CN112367517B - Television camera color space resolution test equipment - Google Patents
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Abstract
The invention relates to the technical field of optical lenses and image processing, in particular to a television camera color space resolution testing device which comprises a collimating optical system, a tested imaging system, a multi-dimensional adjusting table, a brightness control module, a data acquisition and processing module, a computer and a control system, wherein the collimating optical system comprises two groups of collimating optical units, each group of collimating optical unit comprises a voltage-stabilizing and current-stabilizing power supply, a light source and an integrating sphere, and the device is used for solving the defects that the existing television camera color space resolution testing device can only test indexes such as a view field, distortion, a signal-to-noise ratio, optical axis consistency and the like, but cannot simultaneously test minimum resolvable chromatic aberration (MRED) and test minimum detectable chromatic aberration (MTED) indexes.
Description
Technical Field
The invention relates to the technical field of optical lenses and image processing, in particular to a television camera color space resolution testing device.
Background
Compared with the traditional black and white television camera, the color television camera has larger information quantity and richer and more vivid target colors, and is more favorable for judging and identifying the target by an operator. At present, color television cameras have gradually replaced black and white television cameras and are equipped in large numbers in active equipment. In a color television camera system, in order to obtain more color space frequency and spectral distribution information for target detection and identification, the minimum resolvable color difference (MRED) and minimum resolvable color difference (MTED) indexes of a color television camera must be superior. However, the color television camera inevitably has problems of color distortion, non-uniformity and the like of images in the assembly and debugging production, so that the resolution capability of a color space is reduced, the accuracy of color and space information of the images is influenced, and the detection, identification and stabilized aiming precision of a system to a target are reduced. Therefore, it is very important to develop a color spatial resolution detector for detecting and controlling MRED and MTED indexes in the production and debugging process of a color television camera.
The prior art scheme is that the imaging of a color card is directly observed, the imaging color is subjectively judged by human eyes, the test function is single, the consistency of the test result is poor, and the accuracy is low.
In the most closely related devices, for example, the TVT camera test system produced by polish can effectively detect the key indexes of minimum resolvable contrast MRC, field of view, distortion, signal-to-noise ratio, optical axis consistency, etc., but cannot realize the tests of testing minimum resolvable chromatic aberration (MRED) and testing minimum detectable chromatic aberration (MTED), and these two indexes are the main indexes of the color space resolution test device considering the television camera, and according to the functions of the three levels of detection, identification and visibility of the optoelectronic imaging system, the important index for evaluating the color television imaging system, that is, the color space resolution, is provided. Color spatial resolution is an important indicator of the quality of an image formed by a color imaging system. There is much room for improvement in existing related devices.
The scheme of the invention innovatively adopts the synthesis of the color target, so that the background and the color can be changed as required, the method is used for detecting the key indexes of the color television camera, such as MRED, MTED, contrast MRC, field of view, distortion, signal-to-noise ratio, optical axis consistency and the like, and the objective test of the television imaging system on the color space resolution under different backgrounds and brightnesses is realized.
Disclosure of Invention
Technical problem to be solved
The embodiment of the invention provides a television camera color space resolution testing device, which is used for solving the defects that the existing television camera color space resolution testing device can only test indexes such as a view field, distortion, a signal-to-noise ratio, optical axis consistency and the like, but cannot simultaneously test minimum resolvable chromatic aberration (MRED) indexes and minimum detectable chromatic aberration (MTED) indexes.
Disclosure of the invention
The embodiment of the invention provides a television camera color space resolution testing device which comprises a collimating optical system, an imaging system to be tested, a multi-dimensional adjusting table, a brightness control module, a data acquisition and processing module, a computer and a control system, wherein the collimating optical system comprises two groups of collimating optical units, each group of collimating optical units comprises a voltage-stabilizing and current-stabilizing power supply, a light source, an optical diffuser and a target, the light source generates two groups of wide-spectrum light sources through a light splitting system, the wide-spectrum light sources are respectively a target brightness light source and a background brightness light source and are respectively projected into the two optical diffusers through optical attenuators, and the two groups of targets are arranged; the target is a positive target and a negative target respectively, and is positioned between two optical diffusers, and each target contains a solid target, a hollow target and four test patterns with different spatial frequencies.
Preferably, the optical diffuser is an integrating sphere.
Preferably, the brightness control module comprises a stepping motor and a metal attenuation sheet, the metal attenuation sheet is a semicircular aluminum plate with the surface coated with black paint, the metal attenuation sheet is provided with a plurality of light transmission holes, the peripheral profile of the metal attenuation sheet is of an involute-like type, and the metal attenuation sheet is arranged at the inlet of the integrating sphere and can completely block the opening of the integrating sphere when the metal attenuation sheet is at the initial position; the metal attenuation sheet is fixed on the rotating shaft of the stepping motor, and the stepping motor drives the metal attenuation sheet to rotate around the rotating shaft when working, so that the shielded part at the entrance of the integrating sphere is gradually reduced, and the brightness of a light source which is emitted into the integrating sphere is adjusted.
Preferably, a brightness detector is further arranged in the integrating sphere and is sequentially connected with the signal amplifier, the A/D converter, the computer and the control system.
Preferably, the data acquisition and processing module comprises a display, a data acquisition module and a data processing module.
Preferably, the multi-dimensional adjusting table comprises a lifting table, a translation table, a pitching table and a rotating table, and is used for adjusting the position and the angle of the measured color camera system placed on the multi-dimensional adjusting table.
Preferably, the optical attenuator comprises a main box body and an auxiliary box body, the main box body is divided into an attenuation area and a measured imaging area by a partition plate, the attenuation area is used for placing the optical attenuator, the optical attenuator is provided with a main reflecting mirror group and a secondary reflecting mirror group, and a first integrating sphere light source assembly, a first integrating sphere, a second integrating sphere assembly, a second integrating sphere and a beam combining mirror group are arranged in the measured imaging area.
Preferably, the first integrating sphere light source assembly and the second integrating sphere assembly are arranged in parallel, the first integrating sphere and the second integrating sphere are arranged at an angle of 90 degrees, the target is arranged between the first integrating sphere and the second integrating sphere, one end of the attenuation area of the main box body is provided with a bender area extending into the measured imaging area, and the beam combining mirror group is arranged in the bending area.
Preferably, the auxiliary box body is arranged at one end of the main box body, which is provided with the first integrating sphere and the second integrating sphere, a multi-dimensional adjusting table, a computer and a control system are arranged in the auxiliary box body, and the computer and the control system comprise an industrial personal computer and a display.
Preferably, the common box wall of the main box body and the auxiliary box body is also provided with an all-metal alternating current fan, and the other side wall of the main box body is also provided with an all-metal alternating current fan.
(III) advantageous effects
The embodiment of the invention provides a television camera color space resolution testing device which comprises a collimating optical system, an imaging system to be tested, a multi-dimensional adjusting table, a brightness control module, a data acquisition and processing module, a computer and a control system, wherein the collimating optical system comprises two groups of collimating optical units, each group of collimating optical units comprises a voltage-stabilizing and current-stabilizing power supply, a light source, an optical diffuser and a target, the light source generates two groups of broad spectrum light sources through a light splitting system, the broad spectrum light sources are respectively a target brightness light source and a background brightness light source and are respectively projected into the two optical diffusers through optical attenuators, and the two groups of targets are arranged; the device comprises a positive target and a negative target which are respectively positioned between two optical diffusers, each target comprises a solid target, a hollow target and four test patterns with different spatial frequencies, after the test equipment is started, the targets are adjusted to match the positive target and the negative target, two light sources with consistent attributes are emitted by a collimating optical system, and the minimum resolvable chromatic aberration (MRED) and the minimum detectable chromatic aberration (MTED) of the color camera system are measured by a specific adjusting judgment method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a television camera color space resolution testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a main mirror set of a color space resolution testing apparatus of a television camera according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a sub-mirror group of an apparatus for testing color spatial resolution of a television camera according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a beam combiner of a television camera color space resolution testing apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a target of a television camera color space resolution testing apparatus according to an embodiment of the present invention;
FIG. 6 is a block diagram of a device for testing color space resolution of a television camera according to an embodiment of the present invention;
fig. 7 is a block diagram of a data processing model of a television camera color space resolution testing apparatus according to an embodiment of the present invention.
Description of reference numerals:
1: a main mirror group; 2: a secondary mirror group; 3: a beam combining mirror group;
41: first integrating sphere 42: second integrating sphere 43: a first integrating sphere;
a light source assembly; a light source assembly;
44: a second integrating sphere; 5: a target; 6: an all-metal AC fan;
71: an industrial personal computer; 72: a display; 8: a main box body;
9: and an auxiliary box body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "first", "second" and "third" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. Specific meanings of the above terms in the embodiments of the invention will be understood to those of ordinary skill in the art in specific cases.
In this embodiment, as shown in fig. 1, a device for testing color spatial resolution of a television camera includes a collimating optical system, an imaging system to be tested, a multi-dimensional adjusting stage, a brightness control module, a data acquisition and processing module, and a computer and a control system, where the collimating optical system includes two groups of collimating optical units, each group of collimating optical unit includes a voltage-stabilizing and current-stabilizing power supply, a light source, an integrating sphere, and a target 5 as shown in fig. 5, the light source generates two groups of broad-spectrum light sources through a light splitting system, the broad-spectrum light sources are a target brightness light source and a background brightness light source, and are respectively projected into the two integrating spheres through optical attenuators, and the target 5 is provided with two groups; a positive target and a negative target, respectively, are located between the two optical diffusers, and each target 5 contains a solid target, a hollow target, and four test patterns with different spatial frequencies.
Preferably, the brightness control module comprises a stepping motor and a metal attenuation sheet, the metal attenuation sheet is a semicircular aluminum plate with the surface coated with black paint, the metal attenuation sheet is provided with a plurality of light transmission holes, the peripheral profile of the metal attenuation sheet is of an involute-like type, and the metal attenuation sheet is arranged at the inlet of the integrating sphere and can completely block the opening of the integrating sphere when the metal attenuation sheet is at the initial position; the metal attenuation sheet is fixed on the rotating shaft of the stepping motor, and the stepping motor drives the metal attenuation sheet to rotate around the rotating shaft when working, so that the shielded part at the entrance of the integrating sphere is gradually reduced, and the brightness of a light source which is emitted into the integrating sphere is adjusted.
Preferably, a brightness detector is further arranged in the integrating sphere and is sequentially connected with the signal amplifier, the A/D converter, the computer and the control system.
Preferably, the data acquisition and processing module comprises a display, a data acquisition module and a data processing module.
Preferably, the multi-dimensional adjusting table comprises a lifting table, a translation table, a pitching table and a rotating table, and is used for adjusting the position and the angle of the color camera system to be measured placed on the multi-dimensional adjusting table.
Preferably, the optical attenuator further comprises a main box body 8 and an auxiliary box body 9, the main box body 8 is divided into an attenuation area and a measured imaging area by a partition, the attenuation area is used for placing the optical attenuator, the optical attenuator is provided with the main reflector set 1 shown in fig. 2 and the secondary reflector set 2 shown in fig. 3, and the measured imaging area is internally provided with a first integrating sphere light source assembly 41, a first integrating sphere 43, a second integrating sphere light source assembly 42, a second integrating sphere 44 and the beam combining mirror set 3 shown in fig. 4.
Preferably, the first integrating sphere light source assembly 41 and the second integrating sphere assembly are arranged in parallel, the first integrating sphere and the second integrating sphere are arranged at 90 degrees, the target 5 is arranged between the first integrating sphere and the second integrating sphere, one end of the attenuation area of the main box body is provided with a bender area extending into the measured imaging area, and the beam combining mirror assembly 3 is arranged in the bending area.
Preferably, the sub-box is arranged at one end of the main box, where the first integrating sphere 43 and the second integrating sphere 44 are arranged, and a multi-dimensional adjusting table and a computer and control system are arranged in the sub-box, and the computer and control system comprises an industrial personal computer 71 and a display 72.
Preferably, the common box wall of the main box body and the auxiliary box body is also provided with an all-metal alternating current fan 6, and the other side wall of the main box body is also provided with the all-metal alternating current fan 6.
The system can test the common parameters of the camera such as resolution, field of view, distortion, signal-to-noise ratio, optical axis consistency and the like, and can also test the Minimum Resolvable Contrast (MRC), the minimum resolvable chromatic aberration (MRED) and the minimum detectable chromatic aberration (MTED). The detection principle is as follows: the color space resolution test equipment provides an important index for evaluating the color television imaging system, namely color space resolution according to the functions of the three levels of detection, identification and seeing clearly of the photoelectronic imaging system. Color spatial resolution is an important indicator of the quality of an image formed by a color imaging system.
The evaluation parameters of the space resolution of the color television imaging system, namely noise equivalent chromatic aberration, minimum distinguishable chromatic aberration and minimum detectable chromatic aberration, are determined by combining the color space and the human eye visual characteristics and the functions and performance characteristics of the photoelectron imaging system, and a detection model of the color space resolution based on the human eye visual color resolution characteristics is established to detect the three parameters.
In the detection process, a target pattern is generated by the simulation target generator, and the target pattern enters a detection stage after being received by the imaging system. The detection process is a process for realizing automatic detection by combining with the visual characteristics of human eyes, the target extraction is carried out on the detected national image by utilizing human eye distinguishable thresholds of three-dimensional channels L, a and b and image processing, and finally the image is distinguished through the fusion calculation of blue channels, the chromatic aberration is calculated, and then three evaluation parameters of the color space resolution are obtained.
The whole system detection process is carried out in a uniform color space, so that color management is an important link. On one hand, a color management system is combined to search a color space irrelevant to the equipment and convert the target pattern into the color space, so that the color is not distorted in the transmission process of the equipment; and on the other hand, selecting a uniform color space for color difference calculation. The color difference calculation is performed mainly in CIELAB and CIELUV uniform color space by using CIE color system and CIEXYZ as intermediate color space for color conversion.
Specifically, the principle of MRC measurement is: the test patterns with different spatial frequencies are placed in the background, the contrast of the test patterns is changed, an observer observes the test patterns through the color television camera to be detected, and when the observer can just distinguish the test patterns, the contrast of the test patterns is called the minimum distinguishable contrast MRC of the color television camera under the spatial frequency.
Based on the above-mentioned principle of measuring MRC and the method of implementing variable contrast, the color space resolution test equipment of a television camera of the present invention detects MRC as follows: the collimating optical system adopts a single light source, and the light splitting system splits the light to generate target brightness and background brightness which are projected into the two integrating spheres, so that the spectrums of the target and the background are consistent, and the uncertainty caused by the light source can be reduced; the target 5 is positioned between the two integrating spheres, the target 5 contains a solid target, a hollow target and four strip-shaped test patterns with different spatial frequencies, and the solid target is used for calibrating background brightness; the hollow target is used for calibrating the target brightness; the two integrating spheres uniformly illuminate the front and the back of the target 5; the target 5 imaging system projects the image of the target 5 to infinity, providing it to the color television camera.
The brightness of the two integrating spheres is adjusted through a stepping motor and a metal attenuation sheet, and when the light intensity of the light source is adjusted to a certain value, the light intensity entering the target integrating sphere and the background integrating sphere is adjusted through adjusting the light transmission condition of the metal attenuation sheet at the inlets of the two integrating spheres; the metal attenuation sheet is driven by a stepping motor, and the control of the stepping motor is realized by an industrial personal computer. The attenuation sheet is a semicircular aluminum plate, the surface of the attenuation sheet is sprayed with black paint, light holes with uneven structures are arranged on the attenuation sheet, and the peripheral outline of each hole is similar to an involute. Due to the asymmetry of the attenuator structure, the center of the attenuator is positioned at one side of the semicircle, and after the system is powered off, the attenuator can freely fall back to the initial position (completely blocking the opening of the integrating sphere). When the system works, the stepping motor drives the attenuation sheet to rotate, so that the part of the entrance of the integrating sphere is blocked to be uniformly changed, and the aim of adjusting the brightness is fulfilled. The target brightness and the background brightness can be adjusted independently in the same way. The brightness of both sides of the target 5 can be measured by two brightness detectors placed in the integrating sphere. The electric signal output by the brightness detector is amplified and then sent to an A/D converter, and the industrial personal computer is used as a host of the system and used for collecting, processing and logically controlling related data and displaying the obtained brightness and contrast signals on a display.
Test method for minimum resolvable color difference (MRED):
(1) Starting the whole testing equipment, and adjusting the positive and negative four-bar targets to enable the positive and negative four-bar targets to be matched with each other;
(2) Selecting a standard color, sending an instruction to a collimation optical system to generate two light sources, and firstly enabling the attributes of the two light sources to be consistent, so that the colors of the foreground and the background of a color target shot by a CCD (charge coupled device) are the same (whether the color difference delta E ab can be within 0.2), and the four-bar target cannot be distinguished;
(3) Placing a color camera system to be tested on a test bench, then changing the color of a target by adjusting parameters (wavelength, intensity and the like) of one light source (the specific adjusting method is the same as that in the MRC measuring process) with the step length of which the color difference delta E ab is 0.2, so that the color difference between a foreground and a background is gradually increased, and reading or collecting a four-bar target image by test software after each step of adjustment;
(4) And collecting 20 target images under different color differences, drawing a change curve of the color difference between the foreground and the background of the target along with the color difference of the two light sources, and obtaining the color difference when four rods can be distinguished by a judgment criterion, namely the minimum distinguishable color difference.
Method for testing minimum detectable color difference (MTED):
(1) Starting the whole testing equipment, and adjusting the positive and negative square hole targets to enable the positive and negative square hole targets to be matched with each other;
(2) Selecting a standard color, sending an instruction to a collimation optical system to generate two light sources, and firstly enabling the attributes of the two light sources to be consistent, so that the colors of the foreground and the background of the color target shot by the CCD are the same (whether the color difference delta E ab can be within 0.2), and the square hole target image cannot be detected;
(3) Placing the color camera system to be tested on a test bench, then changing the color of the target by adjusting the parameters (wavelength, intensity, etc.) of one of the light sources (the specific adjusting method is the same as that in the MRC measuring process) in a step length with the color difference delta E ab being 0.2, so that the color difference between the foreground and the background is gradually increased, and reading or collecting the square hole target image by test software after each step of adjustment;
(4) And collecting 20 target images under different color differences, drawing a change curve of the color difference between the foreground and the background of the target along with the color difference of the two color target generators, and obtaining the color difference when the square hole target image can be detected just by a judgment criterion, namely the minimum detectable color difference.
In conclusion, the television camera color space resolution testing equipment can test the minimum resolvable chromatic aberration (MRED) index and the minimum detectable chromatic aberration (MTED) index on the basis of testing indexes such as a view field, distortion, a signal-to-noise ratio and optical axis consistency, has more comprehensive functions and improves the testing efficiency.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A kind of test equipment of color space resolution of television camera, including collimating optical system, image system, multidimensional adjusting platform, luminance control module and data acquisition and processing module, computer and control system measured, characterized by that, the said collimating optical system includes two groups of collimating optical units, each said group of collimating optical units include voltage stabilization steady-flow power, light source, optical diffuser and target, the said light source produces two groups of broad spectrum light sources through the light splitting system, it is light source of target luminance and light source of background luminance separately, project into two optical diffusers by the optical attenuator separately, the said target has two groups; a positive target and a negative target respectively, which are positioned between the two optical diffusers, and each target contains a solid target, a hollow target and four test patterns with different spatial frequencies.
2. The apparatus of claim 1, wherein the optical diffuser is an integrating sphere.
3. The apparatus for testing color spatial resolution of a television camera according to claim 2, wherein the brightness control module comprises a stepping motor and a metal attenuation sheet, the metal attenuation sheet is a semicircular aluminum plate coated with black paint on a surface thereof and provided with a plurality of light transmission holes, a peripheral profile of the metal attenuation sheet is of an involute-like type, and the metal attenuation sheet is arranged at an inlet of the integrating sphere and can completely block an opening of the integrating sphere when the metal attenuation sheet is in an initial position; the metal attenuation sheet is fixed on a rotating shaft of the stepping motor, and when the stepping motor works, the metal attenuation sheet is driven to rotate around the rotating shaft, so that the shielded part at the entrance of the integrating sphere is gradually reduced, and the brightness of a light source injected into the integrating sphere is adjusted.
4. The apparatus for testing color space resolution of a television camera according to claim 2, wherein a brightness detector is further disposed in said integrating sphere, and said brightness detector is connected to said signal amplifier, said a/D converter, and said computer and control system in sequence.
5. The apparatus for testing color space resolution of a television camera according to claim 1, wherein said data acquisition and processing module comprises a display, a data acquisition module and a data processing module.
6. The apparatus for testing color space resolution of a television camera according to claim 2, wherein said multi-dimensional adjustment stage comprises a lift stage, a translation stage, a tilt stage and a turntable for adjusting the position and angle of the color camera system under test placed thereon.
7. The apparatus for testing color space resolution of a television camera according to claim 1, further comprising a main box and an auxiliary box, wherein the main box is partitioned by a partition into an attenuation region and an image region to be tested, the attenuation region is used for placing the optical attenuator, the optical attenuator is provided with a main reflector set and a secondary reflector set, and a first integrating sphere light source assembly, a first integrating sphere, a second integrating sphere assembly, a second integrating sphere and a beam combiner set are arranged in the image region to be tested.
8. The apparatus for testing color space resolution of a television camera according to claim 7, wherein the first integrating sphere light source assembly and the second integrating sphere assembly are disposed in parallel, the first integrating sphere and the second integrating sphere are disposed at an angle of 90 ° with respect to each other, the target is disposed between the first integrating sphere and the second integrating sphere, one end of the attenuation region of the main box is disposed with a bending region extending into the measured imaging region, and the beam combiner group is disposed in the bending region.
9. The apparatus for testing color space resolution of a television camera according to claim 7, wherein the sub-box is disposed at an end of the main box where the first integrating sphere and the second integrating sphere are disposed, a multi-dimensional adjusting table and a computer and control system are disposed in the sub-box, and the computer and control system includes an industrial personal computer and a display.
10. The apparatus for testing color spatial resolution of a television camera according to claim 9, wherein the common wall of the main box and the sub-box is further provided with an all-metal ac fan, and the other wall of the main box is also provided with an all-metal ac fan.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595998A (en) * | 2013-11-01 | 2014-02-19 | 西安电子科技大学 | Device and method for testing colors of colored CCD chip |
| CN103826118A (en) * | 2014-03-18 | 2014-05-28 | 西安工业大学 | Color television imaging system spatial resolution detecting device |
| CN111598959A (en) * | 2020-06-28 | 2020-08-28 | 中国科学院深圳先进技术研究院 | Calibration target and calibration method of optical imaging system |
| CN111784780A (en) * | 2020-06-16 | 2020-10-16 | 北京理工大学 | Color calibration method of color camera based on deep learning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8406562B2 (en) * | 2006-08-11 | 2013-03-26 | Geo Semiconductor Inc. | System and method for automated calibration and correction of display geometry and color |
| US8194136B1 (en) * | 2009-01-26 | 2012-06-05 | Amazon Technologies, Inc. | Systems and methods for lens characterization |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595998A (en) * | 2013-11-01 | 2014-02-19 | 西安电子科技大学 | Device and method for testing colors of colored CCD chip |
| CN103826118A (en) * | 2014-03-18 | 2014-05-28 | 西安工业大学 | Color television imaging system spatial resolution detecting device |
| CN111784780A (en) * | 2020-06-16 | 2020-10-16 | 北京理工大学 | Color calibration method of color camera based on deep learning |
| CN111598959A (en) * | 2020-06-28 | 2020-08-28 | 中国科学院深圳先进技术研究院 | Calibration target and calibration method of optical imaging system |
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