公开(公告)号：EP2104358A1

公开(公告)日：2009-09-23

申请号：EP07832673.3

申请日：2007-11-28

申请人： NTT DoCoMo, Inc.

发明人： KATO, Sadaatsu ,  BOON, Choong, Seng

IPC分类号： H04N7/32

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/147 ,  H04N19/53 ,  H04N19/533 ,  H04N19/80

摘要： The object is to compensate motion at high precision even for an image having different characteristics in the horizontal direction and vertical direction, while decreasing code quantity of filter coefficients when a reference image with the fractional image accuracy is generated using a filter of each frame and is encoded and decoded with compensating motion.
A video encoding device 20 which creates a reference image with a fractional pixel accuracy for a video image of a time series of frame images, by using a filter for each frame image, and compensate motion, the video encoding device comprising: a filter information storage unit 203 which stores a filter used for encoding of a frame image in the past; a filter decision unit 202 which selects and decides a filter to be used for encoding of the current frame image from among a plurality of filter candidates including at least the filter stored in the filter information storage unit 203; and a filter information encoding unit 205 which encodes information indicating the decided filter.

摘要翻译： 目的是即使对于具有在水平方向和垂直方向上的不同特性的图像补偿以高精度运动，同时减少滤波器系数的符号量。当使用每个帧的过滤器产生的与分数图像精度的参照图像，是 编码，并与运动补偿解码。 其中，通过使用过滤器对于每个帧图像，并且补偿运动创建具有用于以时间序列的帧图像中的视频图像的分数像素精度的参照图像的视频编码装置20中，视频编码设备，包括：滤波器信息存储 其中单元203个存储用于在过去的帧图像的编码中的过滤器; 滤波器决定部202选择并决定哪一个过滤器，以从过滤器候选者包括多个中被用于对当前帧图像的编码中至少存储在滤波器信息存储部203中的过滤器; 和编码单元205编码的信息表示所述决定滤波器的滤波器信息。