Gray level Correction Algorithm of LED Display Panel Based on Least squares Approximation
Aiming at the problem that the linear characteristic of LED display panel is not compatible with the nonlinear characteristic of image data, this leads to appear the large deviation during grayscale rendition, the gray level correction algorithm based on least squares approximation is provided. First, the necessity of gray level correction is analyzed. Then, the gray level correction algorithm model is constructed according to the principle of latest squares approximation. Next, realization steps are described in accordance with this constructed algorithm model. Finally, this algorithm is implemented in a LED display panel, whose resolution is 128x128. Experimental results show that this algorithm is able to reduce the deviation obviously during grayscale rendition and the problem of gray level deformation can be resolved perfectly because the linear relation between image data after correcting and gray level is good which satisfies the linear characteristic of LED display panel.
LED display panel gray level correction latest squares approximation
Zhi-yuan Sun Feng Chang Rui-guang Wang Xi-feng Zheng
Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences Changchun Chin Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences Changchun Chin
国际会议
长春
英文
126-129
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）