公开(公告)号：US06621869B2

公开(公告)日：2003-09-16

申请号：US10135641

申请日：2002-04-30

申请人： Rajendra K. Talluri ,  Jiangtao Wen ,  John Villasenor

发明人： Rajendra K. Talluri ,  Jiangtao Wen ,  John Villasenor

IPC分类号： H04N712

CPC分类号： G06T9/005 ,  H04N19/66 ,  H04N19/68 ,  H04N19/69 ,  H04N19/89

摘要： Video compression coding with partitioning of data into motion vector data and texture data with reversible Golomb-Rice type codes for the data. Resynchronization markers separate the data types, and the reversible coding permits decoding in both forward and backward directions to minimize data discarded due to errors.

公开(公告)号：US06426976B1

公开(公告)日：2002-07-30

申请号：US09201816

申请日：1998-12-01

申请人： Jiangtao Wen ,  John D. Villasenor ,  Jeong-hoon Park ,  Dong-seek Park

发明人： Jiangtao Wen ,  John D. Villasenor ,  Jeong-hoon Park ,  Dong-seek Park

IPC分类号： H04N718

CPC分类号： H04N19/895 ,  H04N19/51 ,  H04N19/89

摘要： A motion vector prediction method in an error resilient mode. In the motion vector prediction method capable of decoding backwards, motion vectors of macro blocks are calculated, and motion vectors of macro blocks each having one motion vector are predicted while moving to another macro block from left to right, and motion vectors of macro blocks each having four motion vectors are continuously predicted in a predetermined sequence to have correlation in prediction of the four motion vectors. Thus, in the motion vector prediction method based on the image signal compression method of the MPEG-4 or H.263 standard, the motion vector prediction is performed with continuity and correlation among the motion vectors, so that two-way decoding is possible during transmission of blocks with a predetermined packet, resulting in better error resilient characteristics.

摘要翻译： 一种错误弹性模式的运动矢量预测方法。 在能够向后方解码的运动矢量预测方法中，计算宏块的运动矢量，并且从左到右移动到另一宏块时预测具有一个运动矢量的宏块的运动矢量，并且每个宏块的运动矢量 具有四个运动矢量以预定的顺序连续地预测以在四个运动矢量的预测中具有相关性。 因此，在基于MPEG-4或H.263标准的图像信号压缩方法的运动矢量预测方法中，以运动矢量之间的连续性和相关性来执行运动矢量预测，使得可以在 传输具有预定分组的块，导致更好的错误弹性特性。

公开(公告)号：US06356661B1

公开(公告)日：2002-03-12

申请号：US09226227

申请日：1999-01-07

申请人： Jiangtao Wen

发明人： Jiangtao Wen

IPC分类号： G06K946

CPC分类号： H04N19/00 ,  H04N19/70 ,  H04N19/89

摘要： A method and apparatus for decoding encoded parameter data included within a packet containing encoded video data transmitted over an error prone channel is disclosed herein. The method contemplates determining a bit length L of the encoded parameter data. Candidate sequences of codewords are then compared to the encoded parameter data in accordance with a predetermined distortion metric. An optimized sequence is selected from the candidate sequences based upon predefined criteria related to the distortion metric. The optimized sequence collectively has a number of bits equivalent to the bit length L and is usable in decoding the encoded video data.

摘要翻译： 本文公开了一种用于对包含在易错信道上传输的编码视频数据的分组中的编码参数数据进行解码的方法和装置。 该方法考虑确定编码参数数据的位长度L. 然后根据预定的失真度量将码字的候选序列与编码的参数数据进行比较。 基于与失真度量相关的预定准则，从候选序列中选择优化的序列。 优化的序列共同地具有等于位长度L的位数，并且可用于解码编码的视频数据。