Grayscale control algorithm based on optokinetic nystagmus

摘要

In order to reduce trailing phenomenon for moving image in FPD (Flat Panel Display), grayscale control algorithm is proposed that simulates CRT (Cathode Ray Tube) grayscale rendition process. First, after the reason of trailing phenomenon for moving image is introduced, work processes of human eyes are illuminated and grayscale rendition of a pixel is obtained, when seeing moving image on CRT and FPD; Then, based on algorithm derivation, algorithm realization steps and compared experiment results of traditional and proposed FPD grayscale control algorithm are discussed; Finally, implemented main program with VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) is presented and specific rendition process is described. Experimental results indicate image quality is evidently improved and proposed algorithm reduces trailing phenomenon nearly 90%, when FPD displays moving image, according with eyes reflection mechanism and programs can correctly implement on circuit board.