CN117036738A - Color difference value calculating method, storage medium and electronic equipment - Google Patents
Color difference value calculating method, storage medium and electronic equipment Download PDFInfo
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- CN117036738A CN117036738A CN202311064849.0A CN202311064849A CN117036738A CN 117036738 A CN117036738 A CN 117036738A CN 202311064849 A CN202311064849 A CN 202311064849A CN 117036738 A CN117036738 A CN 117036738A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims abstract description 26
- 238000004590 computer program Methods 0.000 claims description 6
- 238000010801 machine learning Methods 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 abstract 1
- 239000003086 colorant Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 printing Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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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
- G06V10/40—Extraction of image or video features
- G06V10/56—Extraction of image or video features relating to colour
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- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Color Image Communication Systems (AREA)
Abstract
The invention particularly relates to a color difference value calculating method, a storage medium and electronic equipment, wherein the color difference value calculating method comprises the following steps of according to a pixel value a of two pixels to be calculated in Lab space 1 、b 1 And a 2 、b 2 Respectively calculating intermediate values C 1 、C 2 、∆C、H 1 After taking H, T, S _C, according to L 1 、L 2 Calculating the color difference value from the intermediate value and preset constants dl and dh, wherein dl and dh are in the value range of [1,10]Is set to a predetermined constant. The color difference value calculation method has good scene adaptation capability, and in view of the fact that parameters in a color difference calculation formula can be adjusted, under a certain fixed scene, a machine learning mode can be used for adaptively adjusting a color difference comparison result, so that dl and dh after adjustment can be well adapted to a current scene; when it is needed in other scenes, the values of dl and dh are adjusted in the same way so that the inventionThe method for calculating the chromatic aberration value in the light can be well adapted in different scenes.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to a color difference value calculation method, a storage medium, and an electronic device.
Background
Color space, i.e. a mathematical model that uses two, three, four dimensional space coordinates to represent colors, with the differentiation of colors being represented by the distance between the space coordinates. In order to better match colors with eyes or cameras, color distance calculation is modified in different modes in different industries by using different technologies, various parameters are added, the process is called color difference calculation, the result of the color difference calculation is a color difference value, which is generally indicated by an E, the color difference value is used for representing the difference of colors, and the color difference value is generally used for evaluating the difference of colors and is widely applied to plastics, printing, paint ink, textile clothing and the like.
The conventional color difference calculation formulas comprise a CIE1976 color difference calculation formula, a CIE1994 color difference calculation formula and the like, the related color parameters of the conventional color difference calculation formulas are determined and cannot be regulated, the calculation accuracy is low, and the use is inconvenient. Taking a data transmission use scene as an example, when physically isolated data is transmitted, generally, the data is firstly converted into a two-dimensional bitmap, such as a two-dimensional code and a color bitmap, then displayed on a display, and then the two-dimensional bitmap is photographed by a photographing device and then decoded to obtain the data to be transmitted. In such a scenario, in order to increase the transmission rate of data, the smaller each color block in the bitmap, the more the color types, the greater the transmission rate. However, with the increase of color types and color differences caused by the display, the decoding accuracy of the captured two-dimensional bitmap is affected, and at this time, an adjustable color difference value calculation method with higher accuracy becomes important.
Disclosure of Invention
The invention aims to provide a color difference value calculation method, the color difference value calculation result is adjustable and the accuracy is high.
In order to achieve the above purpose, the invention adopts the following technical scheme: a color difference value calculating method calculates a color difference value father E according to the following formula:
，
，
，
，
，
，
，
wherein L is 1 、a 1 、b 1 And L 2 、a 2 、b 2 The values of dl and dh are the values of the two pixels to be calculated in Lab space and the values are 1,10]Is set to a predetermined constant.
Compared with the prior art, the invention has the following technical effects: the color difference value calculation method has good scene adaptation capability, and in view of the fact that parameters in a color difference calculation formula can be adjusted, under a certain fixed scene, a machine learning mode can be used for adaptively adjusting a color difference comparison result, so that dl and dh after adjustment can be well adapted to a current scene; when the method is required to be used in other scenes, the values of dl and dh are adjusted in the same way, so that the color difference value calculation method in the invention can be well adapted in different scenes.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The invention discloses a color difference value calculating method, which calculates a color difference value father E according to the following formula:
，
，
，
，
，
，
，
wherein L is 1 、a 1 、b 1 And L 2 、a 2 、b 2 The values of dl and dh are the values of the two pixels to be calculated in Lab space and the values are 1,10]Is set to a predetermined constant.
The color difference value calculation method has good scene adaptation capability, and in view of the fact that parameters in a color difference calculation formula can be adjusted, under a certain fixed scene, a machine learning mode can be used for adaptively adjusting a color difference comparison result, so that dl and dh after adjustment can be well adapted to a current scene; when the method is required to be used in other scenes, the values of dl and dh are adjusted in the same way, so that the color difference value calculation method in the invention can be well adapted in different scenes.
Taking a scene of data ferry as an example, in the scene, a data stream needs to be encoded into an image, the image is displayed by using a display device, then the image is shot by using a shooting device, and finally the image is decoded. There are some deviations from the standard color chart colors that may make the color comparison between the encoded image and the final captured image incorrect for the display panels and the photosensitive devices of the cameras that are actually produced industrially. The traditional color difference value calculation formulas are fixed and not adjustable. The color difference value calculation formula in the invention is adjustable, so that a proper dl and dh values can be selected by a machine learning method for a certain display panel or a certain type of photosensitive equipment, thereby more accurately correcting color distortion generated by the step of displaying and photosensitive equipment of a fixed type, and ensuring that more correct optical information transmission can be obtained by conversion of different display-photosensitive equipment.
The invention also discloses a computer readable storage medium and an electronic device. Wherein a computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements a color difference value calculation method as described above. An electronic device comprising a memory, a processor and a computer program stored on the memory, the processor implementing a color difference value calculation method as described above when executing the computer program.
Claims (3)
1. A color difference value calculating method is characterized in that: the color difference value E is calculated as follows:
，
，
，
，
，
，
，
wherein L is 1 、a 1 、b 1 And L 2 、a 2 、b 2 The values of dl and dh are the values of the two pixels to be calculated in Lab space and the values are 1,10]Is set to a predetermined constant.
2. A computer-readable storage medium, characterized by: a computer program stored thereon, which, when being executed by a processor, implements the color difference value calculation method as claimed in claim 1.
3. An electronic device, characterized in that: comprising a memory, a processor and a computer program stored on the memory, which processor, when executing the computer program, implements the color difference value calculation method as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311064849.0A CN117036738A (en) | 2023-08-23 | 2023-08-23 | Color difference value calculating method, storage medium and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311064849.0A CN117036738A (en) | 2023-08-23 | 2023-08-23 | Color difference value calculating method, storage medium and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117036738A true CN117036738A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311064849.0A Pending CN117036738A (en) | 2023-08-23 | 2023-08-23 | Color difference value calculating method, storage medium and electronic equipment |
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| CN (1) | CN117036738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117560402A (en) * | 2024-01-12 | 2024-02-13 | 凌锐蓝信科技(北京)有限公司 | SD-WAN-based system and method for industrial security isolation and data exchange |
-
2023
- 2023-08-23 CN CN202311064849.0A patent/CN117036738A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117560402A (en) * | 2024-01-12 | 2024-02-13 | 凌锐蓝信科技(北京)有限公司 | SD-WAN-based system and method for industrial security isolation and data exchange |
| CN117560402B (en) * | 2024-01-12 | 2024-04-19 | 凌锐蓝信科技(北京)有限公司 | SD-WAN-based system and method for industrial security isolation and data exchange |
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