专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100246676A1 Method of downscale decoding MPEG-2 video 审中-公开
标题翻译：低分辨率MPEG-2视频解码方法
公开(公告)号：US20100246676A1
公开(公告)日：2010-09-30
申请号：US12591858
申请日：2009-12-03
申请人： Jian-Gen Cao , Cong-Xiu Wang , Ping Xiao , Chen Zhang
发明人： Jian-Gen Cao , Cong-Xiu Wang , Ping Xiao , Chen Zhang
IPC分类号： H04N7/48
CPC分类号： H04N19/59 , H04N19/61
摘要： A method of downscale decoding MPEG-2 video includes an Inverse Discrete Cosine Transformation (DCT) procedure for performing a ½ horizontal downscaling to convert DCT coefficients in a 8×8 array block of the video into a 4×8 array intra-block and performing a ½ vertical downscaling to convert the intra-block into an intra-coded picture having ¼ resolution of the original; and a downscaling motion compensation procedure for performing a motion compensation to the current intra-block to obtain a predictive block having ½ horizontal size of the original, adding the predictive block with a residual block produced by the same method applied to the intra-blocks to obtain a 4×8 array inter-block, and performing a ½ vertical downscaling to the inter-block for outputting a predictive-coded picture and a bidirectional predictive-coded picture having ¼ resolution of the original, so as to simplify the complexity of the decoding computation and enhance the decoding speed.
摘要翻译：一种缩减MPEG-2视频解码方法包括一个逆离散余弦变换（DCT）程序，用于执行1/2水平缩小，将视频的8×8阵列块中的DCT系数转换为4×8阵列块内块，并执行 ½垂直缩小，将块内转换为具有原始分辨率为1/4的帧内编码图像; 以及用于对当前帧内执行运动补偿以获得具有原始水平1/2的预测块的缩小运动补偿程序，将预测块与通过应用于块内的相同方法产生的残差块相加获得一个4×8阵列的块间数据，并且对该块进行1/2的垂直缩小以输出一个预测编码的图象和一个具有1/4分辨率的双向预测编码图象，从而简化了解码计算，提升解码速度。

IPRDB

热门服务

关于我们

友情链接

联系方式