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1. 发明公开

EP4436176A2 IMPROVED ENTROPY CODING IN IMAGE AND VIDEO DECOMPRESSION USING MACHINE LEARNING 审中-实审
公开(公告)号：EP4436176A2
公开(公告)日：2024-09-25
申请号：EP24182040.6
申请日：2019-10-31
申请人： GOOGLE LLC
发明人： BOKOV, Alexander , SU, Hui
IPC分类号： H04N19/593
CPC分类号： H04N19/13 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/194 , H04N19/11 , H04N19/593
摘要： Machine learning is used to refine a probability distribution for entropy coding video or image data. A probability distribution is determined for symbols associated with a video block (e.g., quantized transform coefficients, such as during encoding, or syntax elements from a bitstream, such as during decoding), and a set of features is extracted from video data associated with the video block and/or neighbor blocks. The probability distribution and the set of features are then processed using machine learning to produce a refined probability distribution. The video data associated with a video block are entropy coded according to the refined probability distribution. Using machine learning to refine the probability distribution for entropy coding minimizes the cross-entropy loss between the symbols to entropy code and the refined probability distribution.

2. 发明授权

EP2710802B1 RATE-DISTORTION OPTIMIZATION FOR VIDEO CODING 有权转让
公开(公告)号：EP2710802B1
公开(公告)日：2018-11-21
申请号：EP12728298.6
申请日：2012-06-22
申请人： Skype
发明人： VAFIN, Renat , NILSSON, Mattias , ANDERSEN, Soren Vang
IPC分类号： H04N19/103 , H04N19/147 , H04N19/156 , H04N19/176 , H04N19/19 , H04N19/194
CPC分类号： H04N19/194 , H04N19/103 , H04N19/147 , H04N19/156 , H04N19/176 , H04N19/19
摘要： A method of encoding a video stream comprising: for each of a plurality of first image portions to be encoded in an outgoing video stream, selecting a preferred one of a set of potential encoding modes using a first process comprising an estimation of distortion of the first image portion and a measure of bit rate required to encode the first image portion for each of the first image portion's potential encoding modes; encoding each of the first image portions of the outgoing stream using the respective selected encoding mode; for each of a plurality of second image portions of a video stream, applying a second process comprising at least an estimation of distortion of the second image portion; and using an output of the second process resulting from the second image portions to bias the first process in said selection of the encoding modes for the first portions.

3. 发明公开

EP3282701A4 PREDICTION MODE SELECTION METHOD, APPARATUS AND DEVICE 有权
公开(公告)号：EP3282701A4
公开(公告)日：2018-05-30
申请号：EP16791979
申请日：2016-04-11
申请人： TENCENT TECH SHENZHEN CO LTD
发明人： MAO XUNAN
IPC分类号： H04N19/11 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/194
CPC分类号： H04N19/11 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/194
摘要： A prediction mode selection method, apparatus and system, which falls within the field of video coding. The method comprises: screening a first group of candidate intra-frame chroma prediction modes of a current prediction unit in N intra-frame prediction modes; respectively performing prediction residual cost calculation on the first group of candidate intra-frame chroma prediction modes to obtain a difference evaluation value; screening a second group of candidate intra-frame chroma prediction modes according to the difference evaluation value; respectively performing coding cost calculation on the second group of candidate intra-frame chroma prediction modes to obtain a coding cost value; and determining an intra-frame chroma prediction mode with the minimum coding cost as a final intra-frame chroma prediction mode according to the coding cost value. Since the calculation amount of a difference evaluation value is 1/6-1/4 of the calculation amount of a coding cost value, the effects of effectively reducing the calculation amount and improving the coding efficiency are achieved.

4. 发明授权

EP2347590B1 PREDICTION D'UNE IMAGE PAR COMPENSATION EN MOUVEMENT EN AVANT 有权转让
标题翻译：通过补偿前进来预测图像
公开(公告)号：EP2347590B1
公开(公告)日：2018-01-17
申请号：EP09756012.2
申请日：2009-10-13
申请人： Orange
发明人： PATEUX, Stéphane , CAMMAS, Nathalie
IPC分类号： H04N19/176 , H04N19/194 , H04N19/583
CPC分类号： H04N19/176 , H04N19/194 , H04N19/583

5. 发明公开

EP3262837A1 ENCODING AND DECODING OF INTER PICTURES IN A VIDEO 无效
标题翻译：对视频中的各种图片进行编码和解码
公开(公告)号：EP3262837A1
公开(公告)日：2018-01-03
申请号：EP15883511.6
申请日：2015-02-25
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： SAMUELSSON, Jonatan , PETTERSSON, Martin , WENNERSTEN, Per
IPC分类号： H04N19/593 , H04N19/176 , H04N19/184 , H04N19/192
CPC分类号： H04N19/503 , H04N19/105 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/194 , H04N19/44 , H04N19/593 , H04N19/70
摘要： There are provided mechanisms for decoding a bitstream comprising a coded picture of a video sequence. The coded picture consists of at least one inter coded block of samples and at least one intra coded block of samples, wherein the inter coded block of samples succeeds the intra coded block of samples in a bitstream order. The method comprises reconstructing the inter coded block of samples before reconstructing the intra coded block of samples. There are provided mechanisms for encoding a picture of a video sequence. The picture comprises a block of samples and at least one of a right spatially neighboring block of samples and a bottom spatially neighboring block of samples. The method comprises predicting at least one of the right spatially neighboring block of samples and the bottom spatially neighboring block of samples with inter prediction. The method comprises predicting the block of samples from at least one of the right spatially neighboring block of samples and the bottom spatially neighboring block of samples that is predicted with inter prediction.

6. 发明公开

EP3259909A1 PROCÉDÉ DE CODAGE ET DÉCODAGE D'IMAGES, DISPOSITIF DE CODAGE ET DÉCODAGE ET PROGRAMMES D'ORDINATEUR CORRESPONDANTS 有权转让
标题翻译：编码和解码图像的方法，编码和解码以及相应计算机程序的设备
公开(公告)号：EP3259909A1
公开(公告)日：2017-12-27
申请号：EP16714963.2
申请日：2016-02-18
申请人： Orange
发明人： HENRY, Félix , HUANG, Bihong
IPC分类号： H04N19/107 , H04N19/147 , H04N19/176 , H04N19/13 , H04N19/12 , H04N19/124 , H04N19/194 , H04N19/94
CPC分类号： H04N19/107 , H04N19/12 , H04N19/124 , H04N19/13 , H04N19/147 , H04N19/176 , H04N19/194 , H04N19/94
摘要： The invention relates to a method for encoding at least one image (ICj) divided into blocks. Said method implements, for a common block (Bu) to be encoded: - determining (C31) a first prediction type for the common block; - determining (C32) a prediction procedure associated with the first prediction type; - obtaining a predictor block (BP
opt ) on the basis of the determined prediction procedure; and - calculating (C5a); C5b) a residual block (Bru) that represents the difference between the predictor block obtained and the common block. Said encoding method is characterized in that it includes: - selecting (C6b) a prediction procedure from among a plurality of prediction procedures of a second type, different from the first type; and - encoding (C7b) the residual block calculated by means of an encoding parameter determined on the basis of the selected prediction procedure.

7. 发明授权

EP1820281B1 PARALLEL RATE CONTROL FOR DIGITAL VIDEO ENCODER WITH MULTI-PROCESSOR ARCHITECTURE AND PICTURE-BASED LOOK-AHEAD WINDOW 失效转让
标题翻译：数字视频编码器的多处理器结构和基于图像的预读窗口的并行速率控制
公开(公告)号：EP1820281B1
公开(公告)日：2017-09-13
申请号：EP05852037.0
申请日：2005-11-21
申请人： ARRIS Enterprises LLC
发明人： YU, Guoyao , SCHWARTZ, Mayer, D. , VAN DUSEN, Charles, H. , BORGWARDT, Peter
IPC分类号： H04N19/115 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/194 , H04N19/436 , H04N21/234 , H04N21/44
CPC分类号： H04N21/44004 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/194 , H04N19/436 , H04N21/23406

8. 发明公开

EP3005689A4 SYSTEMS AND METHODS OF ENCODING MULTIPLE VIDEO STREAMS WITH ADAPTIVE QUANTIZATION FOR ADAPTIVE BITRATE STREAMING 审中-公开
标题翻译：系统和方法用于编码多个视频流具有自适应QUANTIZE对于流自适应比特率
公开(公告)号：EP3005689A4
公开(公告)日：2017-01-11
申请号：EP14800901
申请日：2014-05-23
申请人： SONIC IP INC
发明人： ORTON-JAY SAM , NALETOV IVAN VLADIMIROVICH
IPC分类号： H04N19/436 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/194 , H04N19/61
CPC分类号： H04N19/436 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/194 , H04N19/61

9. 发明公开

EP3041237A1 USING MOTION COMPENSATED TEMPORAL FILTER (MCTF) STATISTICS FOR SCENE CHANGE DETECTION WHEN A FADE, DISSOLVE OR CUT OCCURS 审中-公开
标题翻译：使用运动补偿时间滤波STATS（MCTF）FOR场景变化检测的过渡，分辨率为事件或切
公开(公告)号：EP3041237A1
公开(公告)日：2016-07-06
申请号：EP15200238.2
申请日：2015-12-15
申请人： Arris Enterprises, Inc.
发明人： MICHELSEN, Wayne , CHANDRA, Swaroop , ZHOU, Wei , PERERA, Jane
IPC分类号： H04N19/87 , H04N19/172 , H04N19/142 , H04N19/107 , H04N19/615 , H04N19/146 , H04N19/194
CPC分类号： H04N19/87 , H04N19/107 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/194 , H04N19/51 , H04N19/615
摘要： A method is provided to better detect a scene change to provide a prediction to an encoder to enable more efficient encoding. The method uses a Motion Compensated Temporal Filter (MCTF) that provides motion estimation and is located prior to an encoder. The MCTF provides a Motion Compensated Residual (MCR) used to detect the scene change transition. When a scene is relatively stable, the MCR score is also relatively stable. However, when a scene transition is in process, the MCR score behavior changes, Algorithmically, the MCR score is used by comparing the sliding mean of the MCR score to the sliding median. This comparison highlights the transition points. In the case of a scene cut, the MCR score exhibits a distinct spike. In the case of a fade or dissolve, the MCR score exhibits a transitional period of degradation followed by recovery. By implementing the above detection using the MCR, the location of the I-pictures in the downstream encoding process can be accurately determined for the encoder.
摘要翻译：提供了一种方法，以更好地检测场景改变在编码器，以提供一个预测以使更有效的编码。该方法使用运动补偿时间滤波（MCTF）确实提供运动估计和前上编码器的位置。在MCTF运动补偿提供的残留（MCR）用于检测场景改变的过渡。当一个场景相对稳定，MCR比分是如此的相对稳定。然而，当一个场景过渡过程中，MCR比分行为的变化，从算法，将MCR得分是通过比较MCR比分滑动平均的移动平均值使用。这个比较突出的过渡点。在场景切换的情况下，MCR得分呈现出明显的尖峰。在淡入或溶解的情况下，得分MCR展品随后回收降解的一个过渡期。通过实现使用MCR上述检测中，I图像的下游编码过程中的位置可以被精确地设置确定性开采的编码器。

10. 发明公开

EP3039868A1 APPARATUSES AND METHODS FOR CABAC INITIALIZATION 审中-公开
标题翻译：用于CABAC初始化的装置和方法
公开(公告)号：EP3039868A1
公开(公告)日：2016-07-06
申请号：EP14841239.8
申请日：2014-07-23
申请人： Magnum Semiconductor, Inc.
发明人： PEARSON, Eric C. , NOVOTNY, Pavel
IPC分类号： H04N19/13
CPC分类号： H04N19/13 , H04N19/147 , H04N19/174 , H04N19/176 , H04N19/194 , H04N19/436 , H04N19/91
摘要： Apparatuses and methods for initializing a CABAC state are disclosed herein. An example apparatus may include an encoder configured to receive a macroblock dependent on at least one unencoded macroblock. The encoder may further be configured to receive a plurality of CABAC states and initialize CABAC in accordance with one of the plurality of CABAC states to encode the macroblock prior to the at least one unencoded macroblock being encoded.
摘要翻译：本文公开了用于初始化CABAC状态的设备和方法。示例装置可以包括编码器，该编码器被配置为接收取决于至少一个未编码宏块的宏块。编码器可以进一步被配置为接收多个CABAC状态并根据多个CABAC状态之一来初始化CABAC以在编码至少一个未编码宏块之前对宏块进行编码。

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