一种YUV颜色空间下的多视差图偏色校正方法

Correction of Color Erroneous Disparity Images Based on YUV Color Space

在多幅视差图中选取一副颜色接近真实的图像作为标准图,然后将该标准视差图和偏色视差图分别进行从RGB到YUV的颜色空间转换,计算偏色视差图在YUV颜色空间下的3个颜色校正系数K,得到YUV颜色空间下待校正偏色图像的真实颜色灰度值,最后将得到的颜色灰度值从YUV转换到RGB颜色空间,从而实现任意多幅偏色视差图的校正。实验研究表明,本方法可以实现任意多路偏色程度在15%以内的偏色校正,校正效果较好,从而能改善自由立体显示器的显示质量。

An almost perfect disparity image is selected from the multi-view images to act as a standard image to correct the other color erroneous disparity images. All these disparity images＇ color space are changed from RGB to YUV. The color correction factors of the color erroneous disparity images in YUV color space were computed and used to yield the real gray values of the color erroneous disparity images pixels. Finally the disparity images＇ color space is transformed back to RGB color space,and the correction of the color erroneous disparity images is finished. The method performs well as the extent of the color cast not more than 15% according to the experiment,so it improves the quality of the 3D display.