摘要
为了快速地进行H.264/AVC中1/4精度像素内插,提出并实现了一种适用于H.264中1/4像素精度的内插算法的硬件设计。其中对亮度分量,设计了一种将2维滤波转换为1维滤波,4个滤波器并行处理,同时采用流水线技术和用移位加代替乘法运算的硬件架构;对色度分量,用移位加代替乘法运算进行1/8像素精度的内插。实践表明,此架构可满足标清及高清要求,且速度快,面积小。
In this paper,a hardware architecture for quarter-pixel interpolation in H. 264 is proposed. As for the luminance component, we adopt a design which is using four parellel filters which can turn 2-D filter into 1-D filter and using pipeline technique and shift＆add instead of multiplication in the mean time. While for the chrominance component, we use a design comprising of only shift＆add to calculate the eight-pixel interpolation. The architecture proposed in this paper can meet the requirement of SD and HD and it works fast and consumes less resources.
出处
《中国图象图形学报》
CSCD
北大核心
2007年第10期1740-1744,共5页
Journal of Image and Graphics
关键词
1/4精度像素
硬件架构
滤波器
移位加
quarter-pixel interpolation, hardware architecture, filter, shift and add
