公开(公告)号：EP2816805A1

公开(公告)日：2014-12-24

申请号：EP13169785.6

申请日：2013-05-29

申请人： BlackBerry Limited

发明人： He, Dake ,  Nguyen, Nguyen ,  Martin-Cocher, Gaëlle Christine ,  Flynn, David

IPC分类号： H04N19/00 ,  H04N19/503 ,  H04N19/61

CPC分类号： H04N19/105 ,  H04N19/147 ,  H04N19/36 ,  H04N19/50 ,  H04N19/61

摘要： Methods of encoding and decoding media, for example video, using conditional reconstruction refinement are described. The encoding and decoding relies upon predictions that are based on previously encoded and decoded samples. Prediction information identifies the previously reconstructed samples upon which a prediction is to be based and is available to both the encoder and decoder. On the basis that a previously-reconstructed sample is going to be used as source data for a prediction, the encoder refines that reconstructed sample, uses the refined reconstructed sample for the prediction, and encodes refinement data to enable the decoder to also refine the previously-reconstructed sample during decoding. In some cases, a reconstructed sample may be refined more than once. Various flags or bits may be used to signal when refinement is enabled or disabled and may be signaled at various hierarchical points in the coding structure.

摘要翻译： 描述使用条件重建细化来对介质（例如视频）进行编码和解码的方法。 编码和解码依赖于基于先前编码和解码的样本的预测。 预测信息识别先前重建的样本，预测将基于该样本，并且对编码器和解码器均可用。 在先前重构的样本将被用作预测的源数据的基础上，编码器精化重建样本，使用精确的重构样本进行预测，并且对细化数据进行编码，以使解码器能够先前改进 - 解码过程中重构样本。 在某些情况下，重建样本可能会被多次精炼。 可以使用各种标志或位来在细化被启用或禁用时发出信号，并且可以在编码结构中的各个分层点发出信号。

公开(公告)号：EP2680579B1

公开(公告)日：2017-08-09

申请号：EP12173938.7

申请日：2012-06-27

申请人： BlackBerry Limited

发明人： He, Dake ,  Wang, Jing ,  Martin-Cocher, Gaëlle Christine

IPC分类号： H04N19/176 ,  H04N19/122 ,  H04N19/136 ,  H04N19/157

CPC分类号： H04N19/157 ,  H04N19/122 ,  H04N19/136 ,  H04N19/176

公开(公告)号：EP2680579A1

公开(公告)日：2014-01-01

申请号：EP12173938.7

申请日：2012-06-27

申请人： BlackBerry Limited

发明人： He, Dake ,  Wang, Jing ,  Martin-Cocher, Gaëlle Christine

IPC分类号： H04N7/26

CPC分类号： H04N19/157 ,  H04N19/122 ,  H04N19/136 ,  H04N19/176

摘要： Methods and devices for modified coding of blocks of residuals in the case of transform skipping. To better align the data with assumptions upon which the entropy coding scheme is based, the block of residual data is permuted at the encoder prior to entropy coding. The block of reconstructed data is then inverse permuted at the decoder to recover the reconstructed block of residuals. The permutation may include 180 rotation of the block, which may be of particular benefit in the case of intra-coded residuals.

摘要翻译： 在变换跳过的情况下对残差块进行修改编码的方法和设备。 为了更好地将数据与熵编码方案所基于的假设对齐，残差数据块在熵编码之前在编码器处被置换。 然后在解码器处对经重构的数据块进行逆置换以恢复重构的残差块。 置换可以包括块的180次旋转，这在帧内编码残差的情况下可能是特别有利的。