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2. 发明公开

EP3354020A1 LOW-LATENCY TWO-PASS VIDEO CODING 审中-公开
公开(公告)号：EP3354020A1
公开(公告)日：2018-08-01
申请号：EP16736740.8
申请日：2016-06-29
申请人： Google LLC
发明人： KUUSELA, Aki
IPC分类号： H04N19/139 , H04N19/513 , H04N19/196 , H04N19/194 , H04N19/59
CPC分类号： H04N19/527 , H04N19/139 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/30 , H04N19/40 , H04N19/423 , H04N19/513 , H04N19/53 , H04N19/59
摘要： Low-latency two-pass video coding may include identifying an input frame from an input video stream, determining a reduced frame from the input frame, the reduced frame having a size smaller than a size of the input frame, encoding the reduced frame using a first encoder, generating a plurality of encoding parameters based on encoding the reduced frame, generating an encoded frame by encoding the input frame using the first encoder and the plurality of encoding parameters, including the first encoded frame in an output bitstream, and storing or transmitting the output bitstream.

3. 发明授权

EP1992169B1 METHOD AND APPARATUS FOR BIT RATE CONTROL IN SCALABLE VIDEO SIGNAL ENCODING USING A RATE-DISTORTION OPTIMISATION 有权
标题翻译：使用速率失真优化的可扩展视频信号编码中的比特率控制的方法和设备
公开(公告)号：EP1992169B1
公开(公告)日：2018-05-16
申请号：EP07704683.7
申请日：2007-02-21
申请人： Thomson Licensing
发明人： ZHU, Li Hua , XU, Long , CHEN, Zhi Bo
IPC分类号： H04N19/103 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/19 , H04N19/194 , H04N19/615 , H04N19/63
CPC分类号： H04N19/615 , H04N19/103 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/19 , H04N19/194 , H04N19/30 , H04N19/63
摘要： In many video encoding bit rate control models such as TMN8 and RHO domain, the distortion D has been described as a uniform weighted distortion. According to the invention an approximated but still easy-to-use Laplacian distribution model is calculated for the quantisation step size adaptation in the macroblock layer bit rate control. The inventive bit rate control uses a pre-analysis step (LPPREA, HPPREA) that calculates the standard deviation of the input signal amplitudes in each macroblock in a Group of Frames. Using the corresponding standard deviation value determined in the pre-analysis step, in a motion estimation/compensation step (CQPEMB) the best mode for the P and B pictures and the actual standard deviation of the prediction residual for the macroblocks are obtained, whereby a rate distortion optimisation processing using the Laplace distribution is performed. For I frames an intra prediction is carried out by which the best prediction mode and the actual standard deviation of the prediction residual for the macroblocks are obtained, and a rate distortion optimisation processing using the Laplace distribution is performed. Thereby for I and P frames the quantisation parameter for each macroblock is obtained and used in a corresponding quantisation that follows transform (TRF1) of the prediction or motion estimation/compensation residual. For the B frames the bit rate control is carried out once again in an actual coding step, i.e. the quantisation parameter for a current macroblock is computed with the inventive improved TMN8 bit rate control using the best mode and the actual standard deviation obtained from the ME/MC stage.

4. 发明授权

EP2926557B1 METHOD FOR PREDICTING A BLOCK OF PIXELS FROM AT LEAST ONE PATCH 有权
标题翻译：用至少一个补丁预测像素块的方法
公开(公告)号：EP2926557B1
公开(公告)日：2018-05-09
申请号：EP13802002.9
申请日：2013-11-26
申请人： Thomson Licensing
发明人： GUILLEMOT, Christine , CHERIGUI, Safa , THOREAU, Dominique , GUILLOTEL, Philippe
IPC分类号： H04N19/593 , H04N19/105 , H04N19/154 , H04N19/176 , H04N19/194 , H04N19/97
CPC分类号： H04N19/105 , H04N19/154 , H04N19/176 , H04N19/194 , H04N19/593 , H04N19/97
摘要： The present invention generally relates to a method for predicting a block of pixels from at least one patch comprising a block of pixels and a causal neighborhood around this block of pixels. The method comprises the following steps: determining a mapping of a causal neighborhood, around that block of pixels to be predicted, on the block of pixels to be predicted in order that the block of pixels of each patch is best predicted by mapping the neighbourhood of that patch on the block of pixels of that patch, and predicting the block of pixels from a prediction block computed by applying the determined mapping on the neighbourhood of the block of pixels to predict.

5. 发明公开

EP3300367A2 APPARATUS AND METHOD FOR PROCESSING IMAGE 有权转让
标题翻译：用于处理图像的装置和方法
公开(公告)号：EP3300367A2
公开(公告)日：2018-03-28
申请号：EP17177939.0
申请日：2017-06-26
申请人： Hanwha Techwin Co., Ltd.
发明人： Ryu, Ji Hyung , Yang, Il Sik
IPC分类号： H04N19/172 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/137 , H04N19/142 , H04N19/146 , H04N19/194 , H04N19/167 , H04N19/85 , H04N19/59
CPC分类号： H04N19/124 , G06T5/002 , G06T5/003 , G06T5/20 , G06T5/50 , G06T2207/20221 , H04N19/117 , H04N19/132 , H04N19/137 , H04N19/142 , H04N19/146 , H04N19/167 , H04N19/172 , H04N19/184 , H04N19/194 , H04N19/59 , H04N19/85
摘要： An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
摘要翻译：图像处理设备包括图像处理器和编码器。图像处理器增强输入图像的边缘，从输入图像去除噪声，合成边缘增强图像和噪声消除图像，并从合成图像中去除高频。编码器对缩小后的合成图像进行预编码，获得预编码图像的预编码比特率，基于参考比特率和预编码比特率来设置量化参数值，并且基于高频去除图像对量化参数值。

6. 发明公开

EP3291560A1 ENCODER FOR ENCODING, AND DECODER FOR DECODING, A 2-DIMENSIONAL DIGITAL IMAGE REPRESENTATION INTO A DATA STREAM USING APPLYING ADDITIONAL INFORMATION TO A DIFFERENT COEFFICIENT 审中-公开
标题翻译：编码器，用于编码和解码解码，将二维数字图像表示转换为数据流，方法是将附加信息应用于不同的系数
公开(公告)号：EP3291560A1
公开(公告)日：2018-03-07
申请号：EP16193868.3
申请日：2016-10-14
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Keinert, Joachim , Richter, Thomas , Thoma, Herbert , Scherl, Christian , de Frutos López, Manuel , Fößel, Siegfried , Heppner, Wolfgang , Martinez Del Amor, Miguel Angel , Wtjurin, Sergej
IPC分类号： H04N19/64 , H04N19/593 , H04N19/463 , H04N19/132 , H04N19/136 , H04N19/18 , H04N19/645 , H04N19/182 , H04N19/194 , H04N19/124
CPC分类号： H04N19/124 , H04N19/132 , H04N19/146 , H04N19/18 , H04N19/184 , H04N19/194 , H04N19/463 , H04N19/593 , H04N19/645 , H04N19/647
摘要： An encoder for at least partially encoding a digital image representation into a data stream is shown. The encoder may comprise a processor for encoding groups of coefficients representing spatial components of the digital image representation. Furthermore, the processor may form the data stream using the encoded groups of coefficients wherein, if a coefficient is zero, the processor is configured to omit a respective sign information from encoding and to apply, for each omitted reference sign, additional information to a different coefficient.
摘要翻译：示出了用于将数字图像表示至少部分编码为数据流的编码器。编码器可以包括用于对表示数字图像表示的空间分量的系数组进行编码的处理器。此外，处理器可以使用编码的系数组来形成数据流，其中，如果系数为零，则处理器被配置为省略来自编码的各个符号信息并且针对每个省略的参考符号将附加信息应用于不同的系数。

7. 发明公开

EP3289763A1 PROCÉDÉ D'ANALYSE D'UNE SÉQUENCE VIDÉO ET ÉQUIPEMENT POUR LA MISE EN OEUVRE DU PROCÉDÉ 审中-公开
标题翻译：分析视频序列的方法和实施该方法的设备
公开(公告)号：EP3289763A1
公开(公告)日：2018-03-07
申请号：EP16721199.4
申请日：2016-04-20
申请人： ATEME
发明人： LARBIER, Pierre
IPC分类号： H04N19/136 , H04N19/142 , H04N19/177 , H04N19/194 , H04N19/51
CPC分类号： H04N19/136 , H04N19/132 , H04N19/14 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/194 , H04N19/46 , H04N19/51
摘要： The invention relates to a method for analysing a set of images of a video sequence with a view to performing a processing of the sequence. The method comprises: determining, in the video sequence, a plurality of disjointed consecutive sub-sequences of at least one successive image according to the type of processing to be carried out and according to the content of the video sequence; and analysing the images of each sub-sequence determined in the video sequence.

8. 发明公开

EP3209022A1 A METHOD FOR ENCODING AND A METHOD FOR DECODING A BLOCK OF COLOR SAMPLES AND CORRESPONDING DEVICES 审中-公开
标题翻译：编码方法和解码彩色样本块和相应设备的方法
公开(公告)号：EP3209022A1
公开(公告)日：2017-08-23
申请号：EP16305195.6
申请日：2016-02-19
申请人： Thomson Licensing
发明人： BORDES, Philippe , POIRIER, Tangi , RACAPE, Fabien
IPC分类号： H04N19/70 , H04N19/117 , H04N19/182 , H04N19/194 , H04N19/82 , H04N19/86
CPC分类号： H04N19/70 , H04N19/117 , H04N19/182 , H04N19/194 , H04N19/82 , H04N19/86
摘要： A decoding method is disclosed. The decoding method comprises :
- decoding a block of color samples;
- applying a first pass and a second pass of filtering on said decoded block of color samples, filtering comprising classifying the color samples into categories and adding a decoded offset value to color samples in at least one category; wherein applying a second pass of filtering comprises:
- decoding a syntax element indicating whether at least one offset value of the second pass is to be set equal to one offset value of the first pass;
- determining the at least one offset value of the second pass responsive to said decoded syntax element.
摘要翻译：公开了一种解码方法。该解码方法包括： - 解码颜色样本块; - 对所述经解码的颜色样本块应用第一遍和第二遍滤波，滤波包括将所述颜色样本分类为多个类别并将经解码的偏移值添加到至少一个类别中的颜色样本; 其中应用第二遍滤波包括：解码指示第二遍的至少一个偏移值是否被设置为等于第一遍的一个偏移值的语法元素; - 响应于所述解码的语法元素来确定第二遍的至少一个偏移值。

9. 发明公开

EP3005689A1 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：EP3005689A1
公开(公告)日：2016-04-13
申请号：EP14800901.2
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： H04N7/12
CPC分类号： H04N19/436 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/194 , H04N19/61
摘要： A method for encoding source video as alternative video streams includes collecting statistics on source video data and writing statistics to shared memory in a first pass through received multimedia content, where the statistics include complexity measures of blocks of pixels, determining initial encoding information for source video data and writing initial encoding information to shared memory during the first pass, encoding the source video data in parallel using collected statistics and initial encoding information to produce alternative video streams during a second pass, and parallel encoding processes reuse additional encoding information that has already been determined for a portion of video and generate additional encoding information that has not already been determined for a portion of video, where the additional encoding information includes quantization parameters for blocks of pixels.
摘要翻译：一种用于编码源视频作为替代的视频流的方法包括：在第一次通过接收到的多媒体内容，其中，所述统计信息包括对源视频像素，确定性采矿初始编码的信息的块的复杂性度量收集关于源视频数据和写入统计统计共享存储器数据和在第一遍期间写入初始编码的信息共享存储器，使用收集的统计信息和初始编码的信息的第二遍期间，以产生替代性视频流并行的源视频数据进行编码，和并行编码处理再使用附加编码信息并已被确定性开采视频的一部分，并产生附加的编码信息没有处理不当已经结束开采视频的一部分，其中，所述附加编码信息包括用于像素的块的量化参数。

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