适合硬件实现的解决色度上采样错误的算法实现

Implementation Method of Solving Chroma Upsampling Error

为了适应视频后处理芯片低成本的需求,提出一种每场仅需用两行缓存、适合硬件实现的解决色度上采样错误的算法。首先,检测出现色度上采样错误的地方;然后,对上采样错误的地方进行处理。具体表现为,检测出有上采样错误的地方,用帧处理方法来进行修复;否则用传统的场处理方法来处理。实验结果表明该算法在较少的资源下,仍然可以有效检测到出现CUE现象的像素点,较好地解决了该错误,并且便于硬件实现,可应用于低成本的数字视频后处理芯片中。

In order to meet the need of low-cost digital video processing chip,a new algorithm to solve the Chroma Up-sampling Error using only two line buffers is presented. Firstly,Chroma Up-sampling Error pixels are detected. Next,frame interpolation method is used in these pixels. Then,tradition- al field interpolation method is used in other pixels. Experimental results demonstrate that the algorithm can not only detect the Chroma Up-sampling Error pixels,but also removes the error. It can be used in the chip of low-cost digital video processing.