A method and device for automatic image color calibration

Abstract

The invention discloses a device and method for automatic image color calibration, which performs color calibration by analyzing the relationship between the reference color value of a color block under a D65 light source and the observed color value under an image acquisition environment; including: for a specific The color card designed in the application field, the reference color value of the color block of the color card under the D65 standard lighting environment, the color block positioning program module, and the color calibration program module. By adopting the technical solution of the present invention, low-cost special color cards can be customized for various application scenarios, and through the supporting color block positioning program module and color calibration program module, the automation of the image color calibration process can be realized, and the image color calibration process can be realized automation.

Description

Technical field[0001]The present invention relates to the field of color calibration and image processing, and more particularly to an apparatus and method for automating image color calibration.Background technique[0002]The color of digital images is affected by factors such as environmental illumination, collecting equipment. The same object is inconsistent with the colors collected under different illumination conditions or by different acquisition devices. Therefore, in many application scenarios related to image analysis, such as image-based AI doctor diagnosis, art digitization, etc., maintain color consistency is an essential one. Color calibration based on color card is a method designed to address the color inconsistency caused by the acquisition equipment and ambient color temperature.[0003]Currently used color calibration equipment is a ColorChecker series color card from American Ai Li. This type of color card is usually composed of 24 colors, and Ai Li Li provides color...

AI Technical Summary

Problems solved by technology

It can be seen that the general color card is difficult to meet the diverse application requirements

[0005] The second is that ColorChecker's color card still relies on people to manually locate the position of the color block in the picture, which brings inconvenience to the use

The design of this series of color cards does not include design elements to assist automatic positioning of computer programs, which is not conducive to the development of general color block positioning programs

[0006] The third is that this type of professional color card is expensive, and it is not suitable for use in some scenarios that are prone to loss of color cards, and it is not conducive to promoting to the public.

Images