公开(公告)号：US06912253B1

公开(公告)日：2005-06-28

申请号：US09657434

申请日：2000-09-07

申请人： Han Li ,  Toshio Miki ,  Yasuhiro Ogiri

发明人： Han Li ,  Toshio Miki ,  Yasuhiro Ogiri

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04B1/66 ,  H04N7/12 ,  H04N7/36

CPC分类号： H04N19/40 ,  H04N19/48 ,  H04N19/51 ,  H04N19/587

摘要： A transcoding apparatus converts first coded data obtained from a plurality of frames forming a video image by means of a coding algorithms including an interframe prediction coding algorithm with motion compensation into second coded data having a different structure. More specifically, the transcoding apparatus takes a portion of frames which have had the interframe prediction coding and are included in the plurality of frames forming the video image as processing object frames, and from at least the first coded data corresponding to the processing object frames, generates the second coded data corresponding to coded data which are to be obtained when performing the interframe prediction coding on the processing object frames with reference to second reference frames which are different from first reference frames referenced in the interframe prediction coding of the processing object frames. In order to the second coded data, the transcoding apparatus has a motion information calculating portion for calculating motion information to be included in the second coded data using at least motion information contained in said processing object data.

摘要翻译： 代码转换装置通过包括具有运动补偿的帧间预测编码算法的编码算法将形成视频图像的多个帧获得的第一编码数据转换为具有不同结构的第二编码数据。 更具体地，代码转换装置取得具有帧间预测编码的帧的一部分，并且将构成视频图像的多个帧包括在作为处理对象帧的帧中，并且从至少对应于处理对象帧的第一编码数据， 产生对应于在对处理对象帧执行帧间预测编码时要获得的编码数据的第二编码数据，该第二编码数据参照与处理对象帧的帧间预测编码中参考的第一参考帧不同的第二参考帧。 为了第二编码数据，代码转换装置具有运动信息计算部分，用于使用至少包含在所述处理对象数据中的运动信息来计算要包括在第二编码数据中的运动信息。

公开(公告)号：US07643559B2

公开(公告)日：2010-01-05

申请号：US10432044

申请日：2002-09-12

申请人： Sadaatsu Kato ,  Minoru Etoh ,  Shunichi Sekiguchi ,  Hiroyuki Yamaguchi ,  Yasuhiro Ogiri ,  Satoru Adachi ,  Mitsuru Kobayashi

发明人： Sadaatsu Kato ,  Minoru Etoh ,  Shunichi Sekiguchi ,  Hiroyuki Yamaguchi ,  Yasuhiro Ogiri ,  Satoru Adachi ,  Mitsuru Kobayashi

IPC分类号： H04N7/18

CPC分类号： H04N19/577 ,  H04N19/109 ,  H04N19/119 ,  H04N19/137 ,  H04N19/17 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/51 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61

摘要： For the purpose of coding or decoding motion information in a picture with a small overhead, a coding method of performing compression coding of a moving picture by motion compensated prediction is configured to have a motion compensated prediction step (processing by motion detector 2, motion compensator 5, spatial predictor 9, etc.) of performing the motion compensated prediction while assigning one or more motion vectors (e.g., up to two motion vectors) in units of sub-blocks obtained by sub-dividing each of macroblocks resulting from division of each frame of the moving picture; and an assignment information coding step (processing by variable length encoder 23 and others) of outputting information about an assignment situation of the one or more motion vectors to the sub-blocks in a multiplexed form on a bitstream.

摘要翻译： 为了对具有较小开销的图像中的运动信息进行编码或解码，将通过运动补偿预测执行运动图像的压缩编码的编码方法配置为具有运动补偿预测步骤（运动检测器2，运动补偿器 5，空间预测器9等）执行运动补偿预测，同时分配一个或多个运动矢量（例如，多达两个运动矢量），以通过对由每个 运动画面的框架; 以及在比特流上以复用形式向子块输出关于一个或多个运动矢量的分配情况的信息的分配信息编码步骤（可变长度编码器23等的处理）。