公开(公告)号：EP2896206A1

公开(公告)日：2015-07-22

申请号：EP13765608.8

申请日：2013-09-13

申请人： QUALCOMM INCORPORATED

发明人： VAN DER AUWERA, Geert ,  JOSHI, Rajan Laxman ,  KARCZEWICZ, Marta

IPC分类号： H04N19/00

CPC分类号： H04N19/00909 ,  H04N19/463 ,  H04N19/70 ,  H04N19/86 ,  H04N19/96

摘要： A method of encoding video data includes encoding a quantization parameter delta value in a coding unit (CU) of the video data before coding a version of a block of the CU in a bitstream so as to facilitate deblocking filtering. Coding the quantization parameter delta value may comprise coding the quantization parameter delta value based on the value of a no_residual_syntax flag that indicates whether no blocks of the CU have residual transform coefficients.

摘要翻译： 一种编码视频数据的方法包括在将比特流中的CU的块的版本编码之前对视频数据的编码单位（CU）中的量化参数德耳塔值进行编码，以便于解块滤波。 编码量化参数增量值可以包括基于指示CU的块是否具有残余变换系数的无残留语法标志的值来对量化参数增量值进行编码。

公开(公告)号：EP2754292A1

公开(公告)日：2014-07-16

申请号：EP11871907.9

申请日：2011-09-09

申请人： Thomson Licensing

发明人： GU, Xiaodong ,  ZHANG, Fan ,  CHEN, Zhibo

IPC分类号： H04N7/26

CPC分类号： H04N19/00909 ,  H04N19/154

摘要： In video quality control and estimation, the joint evaluation of compression artifacts and channel artifacts is a problem. The invention considers the joint perception of both a compression artifact level D
m (V) and a channel artifact level D
h (V) in a method for calculating overall distortion in a video being affected by compression artifacts and channel artifacts. The method comprises a step of adding a compression artifact level D
m (V) and a summand S that is derived from log (D
h (V)) multiplied with a factor that decreases with increasing compression artifact level D
m , such as D(V) = D
m (V) + c ⋅ (K - D
m (V)) ⋅ log(D
h (V)). The result obtained is a measure for the overall distortion.

公开(公告)号：EP1933566A3

公开(公告)日：2011-05-25

申请号：EP07121133.8

申请日：2007-11-20

申请人： University-Industry Cooperation Group of KyungHee University

发明人： Park, Gwang Hoon ,  Park, Min Woo ,  Suh, Doug Young ,  Kim, Kyu Heon

IPC分类号： H04N7/26 ,  H04N7/50

CPC分类号： H04N19/00909 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/80 ,  H04N19/86

摘要： Provided are a bS derivation process and a deblocking filtering method and apparatus using illumination compensation and/or chrominance compensation, such as a multi-view video coding, in a picture coding/decoding process in which a prediction coding is performed. If neither of the two blocks are intra-coded, neither of the two blocks do contain a none-zero transformed coefficient, and motion compensation for the two blocks is performed based on the identical reference frame and the absolute difference between the horizontal or vertical components of the two motion vectors of the two blocks is less than 1, the bS of the two blocks is derived by considering whether the two blocks are coded by illumination compensation (IC) according to an embodiment of the present invention,. Specifically, if both of the two blocks are coded by IC mode or neither of the two blocks are coded by IC mode, bS is set as such a value that filtering is unnecessary. On the other hand, if both of the two blocks are coded by IC mode and the blocks have different illumination change values, or only one of the blocks is coded by IC mode, the bS is derived using difference of illumination change values or the illumination change value.