LED display screen chromaticity feature extraction method

The invention provides an LED display screen chromaticity feature extraction method and system, and belongs to the technical field of feature extraction, and the method specifically comprises the steps: determining the reference extraction number of chromaticity feature points of a divided region based on a region deviation value and a comprehensive deviation value, obtaining the chromaticity deviation values of the divided region and adjacent regions under different brightness, and obtaining the chromaticity feature points of the divided region; the correction extraction number under different brightness is determined by combining the deviation values of the chromaticity characteristics of the divided areas and the adjacent areas under different brightness, and the chromaticity characteristics of the different divided areas of the LED display screen under different brightness are extracted through the extraction number and the reference extraction number. The method achieves the extraction of the differentia