摘要
针对多视点视频系统中不同视点视频间存在的颜色差异,提出了一种RGB空间下的颜色校正方法。以与真实世界颜色比较接近的视频作为参考视频,对存在颜色差异的视频进行颜色校正,首先将两个视频同一时刻的一帧图像从YUV空间变换到RGB空间,计算图像r,g,b三通道的校正系数,然后对三通道颜色进行校正,最后将校正后的RGB数据变换回YUV空间,重复此过程就可完成整个待校正视频的颜色校正。颜色校正将有助于视频观看质量和编码效率的提高。实验结果表明,该方法校正效果比较理想。
The color variation may exist among different viewpoints in muhi-view video system. A color correction method in RGB space is proposed. One of the multi-view videos acts as a conference video to correct the color distortion video. At first, the same time frame of the two videos is converted from YUV space to RGB space. Then the correction coefficients of r, g and b channels are computed. After the color of the three channels is corrected, the RGB data is converted back to YUV space. By repeating this processing, the distortion video can be corrected. Color correction will improve visual quality and encoding efficiency. Experimental results show that this method can get an ideal correction effect.
出处
《电视技术》
北大核心
2011年第21期29-31,共3页
Video Engineering
基金
欧盟FP7-PEOPLE-2009-IRSES项目(247083)
关键词
多视点视频
颜色空间
颜色校正
multi-view video
color space
color correction
