A hdr image prior based sdr colorimeter color enhancement method and system

Abstract

This invention relates to a color enhancement method and system for an SDR colorimeter based on HDR image prior, and pertains to the field of automotive paint repair technology. The method includes: acquiring current paint repair image data in response to a paint repair signal to determine the current paint repair image data format; if the current paint repair image data format is not a standard paint repair image data format, re-determining the current paint repair image data based on format adjustment rules; determining a YUV color space image based on the current paint repair image data according to a preset transformation matrix, and extracting the luminance Y channel; performing dynamic range compression on the current paint repair image data according to the SDR standard luminance range; performing global tone consistency optimization based on the extracted paint texture and paint highlight values ​​from the current paint repair image data using a perceptual model to obtain an optimized luminance Y channel; and re-determining the current paint repair image data based on the optimized luminance Y channel. This invention improves the accuracy of paint repair color matching and enhances visual consistency with the human eye.

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