公开(公告)号：WO2014058796A1

公开(公告)日：2014-04-17

申请号：PCT/US2013/063723

申请日：2013-10-07

Applicant: GOOGLE INC

Inventor： XU, Yaowu ,  WILKINS, Paul Gordon ,  GRANGE, Adrian William ,  BULTJE, Ronald Sebastiaan

IPC: H04N19/44 ,  H04N19/51 ,  H04N19/56

CPC classification number: H04N19/44 ,  H04N19/51 ,  H04N19/56

Abstract: Techniques are described to use a reference motion vector to reduce the amount of bits needed to encode motion vectors for inter prediction. One method includes identifying a candidate motion vector used to inter predict each of a plurality of previously coded blocks to define a plurality of candidate motion vectors, identifying a set of reconstructed pixel values corresponding to a set of previously coded pixels for the current block, and generating, using each candidate motion vector, a corresponding set of predicted values for the set of previously coded pixel values within each reference frame of a plurality of reference frames. A respective error value based on a difference between the set of reconstructed pixel values and each set of predicted values is used to select a reference motion vector from the candidate motion vectors that is used to encode the motion vector for the current block.

Abstract translation: 描述技术以使用参考运动矢量来减少编码用于帧间预测的运动矢量所需的位数量。 一种方法包括识别用于相互预测多个先前编码的块中的每一个的候选运动矢量，以定义多个候选运动矢量，识别与当前块的一组先前编码像素相对应的一组重建像素值，以及 使用每个候选运动矢量生成多个参考帧的每个参考帧内的先前编码的像素值集合的相应的一组预测值。 使用基于重构像素值集合和每组预测值之间的差的相应误差值从用于编码当前块的运动矢量的候选运动矢量中选择参考运动矢量。

公开(公告)号：WO2015103088A1

公开(公告)日：2015-07-09

申请号：PCT/US2014/072435

申请日：2014-12-26

Applicant: GOOGLE INC.

Inventor： HAN, Jingning ,  BULTJE, Ronald Sebastiaan

IPC: H04N19/119 ,  H04N19/147 ,  H04N19/13 ,  H04N19/176

CPC classification number: H04N19/91 ,  H04N19/119 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/593

Abstract: In accordance with aspects of the disclosure, systems and methods are provided for dividing an image into regions, applying partition types to each region, determining a rate distortion cost for each region based on partition types applied to each region, determining a coding scheme for each region based on the partition types applied to each region, and separately encoding each region based on the rate distortion cost and coding scheme determined for each region.

Abstract translation: 根据本公开的方面，提供了系统和方法，用于将图像划分为区域，对每个区域应用分区类型，基于应用于每个区域的分区类型确定每个区域的速率失真成本，确定每个区域的编码方案 区域，并且基于为每个区域确定的速率失真成本和编码方案，分别对每个区域进行编码。