Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Image color correction method, apparatus and system

A color correction and image technology, applied in the field of image processing, can solve problems such as chromatic aberration, achieve the effect of weakening chromatic aberration and good color restoration effect

Inactive Publication Date: 2018-10-26
BEIJING LUSTER LIGHTTECH
View PDF5 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides an image color correction method, device and system to solve the problem that the existing image color correction method will cause color difference after image correction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Image color correction method, apparatus and system
  • Image color correction method, apparatus and system
  • Image color correction method, apparatus and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] see figure 1 , the implementation of the present application provides an image color correction method, comprising the following steps:

[0037] Step S1, acquiring color card images of standard color cards at various color temperatures, the color card images are collected by the camera to be corrected, and the color card images are processed by Bayer interpolation and white balance algorithm by the camera to be corrected In the obtained preprocessed image, the middle gray block of the preprocessed image has been corrected.

[0038] In this embodiment, the standard color card may be a standard color card with 24 solid color blocks. In a laboratory environment, different color temperature environments can be created by different types of light sources. For example, using a candle as a light source can create a color temperature environment of 2000k, using a high-pressure sodium lamp as a light source can create a color temperature environment of 1950k to 2250k, using a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses an image color correction method, apparatus and system. The method comprises the following steps: obtaining color card images of a standard color card at a plurality of different color temperatures, performing analysis to obtain standard reference values and original collection values of RGB three channels of color blocks in the standard color card at thecolor temperatures, and calculating a calibrated color correction matrix at each color temperature, wherein the color correction matrix is a 3*N-dimensional color correction matrix, N is a positive integer, and N is greater than or equal to 3; and obtaining an input pixel value of an image to be corrected, determining a target color temperature in a collection environment of the image to be corrected, matching a target color correction matrix corresponding to the target color temperature, and correcting the color of the image to be corrected according to the target color correction matrix andthe input pixel value of the image to be corrected. According to the image color correction method, apparatus and system disclosed by the invention, the color of the image is corrected by designing the color correction matrix with high dimensions and adding a medium gray block constraint item, so that the color rendition effect is better, and the chromatic aberration in the image color correctionis weakened.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an image color correction method, device and system. Background technique [0002] The color of the image collected by the camera is closely related to the collection environment. Under different collection environments, the color of the image collected for the same collection target is different. The color temperature of the acquisition environment and the RGB three-component response of the camera chip to different color objects will affect the final imaging color. Therefore, it is necessary to correct the color of the image collected by the camera to restore the true color of the acquisition target. [0003] At present, the traditional image color correction method usually uses a color correction matrix to adjust the color of the image, for example, a 3*3 numerical matrix is ​​used to multiply each pixel point in the image, that is, each color value, so as t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N9/04H04N9/68H04N9/73
CPCH04N9/68H04N23/10H04N23/88
Inventor 于媛媛姚毅张见
Owner BEIJING LUSTER LIGHTTECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com