R/G/B color crosstalk characterization and calibration for LCD displays

LCD displays exhibit significant color crosstalks between their red, green and blue channels (more or less depending on the type of LCD technology). This problem, if it is not addressed properly, leads to (a) a significant color errors in the rendered images on LCD displays and (b) a significant gray tracking problem. The traditional method for addressing this problem has been to use a 3x3 color correction matrix in the display processing pipe. Experimental data clearly shows that this linear model for color correction is not sufficient to address color crosstalk problem in LCD displays. Herein, it is proposed to use higher order polynomials for color correction in the display processing pipe. This paper presents detailed experimental results and comparative analysis on using polynomial models with different orders for color correction.