COLOR LED LAMP GRAYSCALE CORRECTION AND LINEAR COLOR MIXING METHOD

摘要

The present invention relates to a color LED lamp grayscale correction and linear color mixing method; by means of collecting a brightness value corresponding to each color LED lamp bead in a color LED lamp at each brightness level, recording a set of brightness levels as original grayscale data; then normalizing each brightness value of each color LED and, in an x-y plane rectangular coordinate system, plotting and curve fitting each brightness level and corresponding brightness value after normalization processing; recording as k the ratio of the maximum brightness level after normalization to the maximum brightness value, then using the normalized brightness values at k × each brightness level, one by one, to obtain the intercept x_j of the LED curve corresponding to each color on the axis of the brightness level N, and rounding same to x'_j; collecting the x'_j of each color LED as the correction grayscale data of each color LED and storing same in a control module of the color LED lamp, so that during use, the original grayscale data is sent to the control module; thus the control module can implement linear grayscale color mixing on the basis of the corrected grayscale data, making dimming and color mixing accurate with no occurrence of color drift.