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公开(公告)号：US20120033040A1
公开(公告)日：2012-02-09
申请号：US13255376
申请日：2010-04-20
CPC分类号： H04N19/59 , H04N19/117 , H04N19/14 , H04N19/146 , H04N19/147 , H04N19/154 , H04N19/156 , H04N19/17 , H04N19/172 , H04N19/186 , H04N19/192 , H04N19/194 , H04N19/196 , H04N19/197 , H04N19/30 , H04N19/597 , H04N19/61 , H04N19/85
摘要： Filter selection methods and filter selectors for video pre-processing in video applications are described. A region of an input image is pre-processed by multiple pre-processing filters and the selection of the pre-processing filter for subsequent coding is based on the evaluated metric of the region.
摘要翻译： 描述了视频应用中视频预处理的滤波器选择方法和滤波器选择器。 输入图像的区域由多个预处理滤波器预处理，并且用于后续编码的预处理滤波器的选择基于该区域的评估度量。
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公开(公告)号：US08094711B2
公开(公告)日：2012-01-10
申请号：US10569695
申请日：2004-09-02
IPC分类号： H04N11/02
摘要： A video encoder and corresponding method are provided for encoding an input picture or image block using a prediction from a reference-only picture, where the encoder includes a picture buffer for storing a previously coded picture, and a reference processing unit in signal communication with the picture buffer for generating the reference-only picture from a previously coded picture; and the corresponding method includes receiving a substantially uncompressed image block, filtering (714) a previously coded picture to create an adaptive reference, motion compensating the adaptive reference, subtracting the motion compensated adaptive reference from the substantially uncompressed image block, and encoding the difference between the substantially uncompressed image block and the motion compensated adaptive reference. Video decoder and corresponding method are also disclosed.
摘要翻译： 提供了一种视频编码器和相应的方法，用于使用来自参考图像的预测对输入图像或图像块进行编码，其中编码器包括用于存储先前编码的图像的图像缓冲器，以及参考处理单元，与基准处理单元进行信号通信 图像缓冲器，用于从先前编码的图像生成仅参考图像; 并且相应的方法包括接收基本上未压缩的图像块，过滤（714）先前编码的图像以创建自适应参考，运动补偿自适应参考，从基本上未压缩的图像块中减去运动补偿的自适应参考，以及编码 基本上未压缩的图像块和运动补偿的自适应参考。 还公开了视频解码器和相应的方法。
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23.发明申请Rate Control Model Adaptation Based on Slice Dependencies for Video Coding 有权基于视频编码的片段依赖关系的速率控制模型适应公开(公告)号：US20110090960A1
公开(公告)日：2011-04-21
申请号：US12999150
申请日：2009-06-15
IPC分类号： H04N11/02
CPC分类号： H04N19/103 , H04N19/12 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/152 , H04N19/154 , H04N19/172 , H04N19/194 , H04N19/31 , H04N19/40 , H04N19/50 , H04N19/52 , H04N19/547 , H04N19/577
摘要： Statistics for estimating quantization factors of a coding-unit type (e.g., B-coded or I-coded) pictures are determined from other, possibly different (e.g., P-coded) pictures, or previously coded coding-units. Bit rate and quality relationships between such coding-unit types may be used with the quantization parameters. Estimating bit rate and quality relationships between coding-unit types enables accurate rate control for pictures regardless of their coding-unit type. Bit rate and quality relationships between coding-unit types can be used with multiple rate control models to increase compression. Rate control parameters may be adjusted with statistics generated by a motion estimation and compensation framework. Rate control performance may be controlled in transcoding compressed bit streams.
摘要翻译： 用于估计编码单元类型（例如，B编码或I编码）图像的量化因子的统计从其他可能不同的（例如，P编码的）图像或先前编码的编码单元确定。 这样的编码单元类型之间的比特率和质量关系可以与量化参数一起使用。 估计编码单元类型之间的比特率和质量关系使得能够对图像进行精确的速率控制，而不管其编码单元类型如何。 编码单元类型之间的比特率和质量关系可以与多个速率控制模型一起使用以增加压缩。 速率控制参数可以通过运动估计和补偿框架生成的统计数据进行调整。 速率控制性能可以在转码压缩比特流中被控制。
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公开(公告)号：US07889939B2
公开(公告)日：2011-02-15
申请号：US10571148
申请日：2004-09-22
CPC分类号： H04N5/262 , G06T5/002 , G06T5/10 , G06T11/001 , G06T2207/20021 , G06T2207/20052 , G06T2207/20204 , H04N19/86
摘要： Simulation of film grain in an image can occur by compressing a video image, then transmitting compressed video together with a message containing at least one parameter indicative of the original film grain, to a decoder, and restoring the original grainy appearance of images by having the decoder simulating film grain based on the content of the film grain message. To improve efficiency, one or more parameters of film grain information undergo scaling in accordance with a target pixel block size for pixel blocks in the image. Such scaling allows for the use of conventional circuitry for performing block-based operations in connection with the film grain simulation.
摘要翻译： 图像中的胶片颗粒的模拟可以通过压缩视频图像，然后将压缩视频与包含至少一个表示原始胶片颗粒的参数的消息一起发送到解码器，并且通过使图像恢复原始的颗粒状外观， 基于胶片信息内容的解码器模拟胶片颗粒。 为了提高效率，胶片颗粒信息的一个或多个参数根据图像中的像素块的目标像素块尺寸进行缩放。 这种缩放允许使用常规电路来执行与胶片颗粒模拟相关的基于块的操作。
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公开(公告)号：US20100232506A1
公开(公告)日：2010-09-16
申请号：US12223890
申请日：2006-02-17
IPC分类号： H04N7/32
CPC分类号： H04N19/86 , H04N19/105 , H04N19/109 , H04N19/137 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/19 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/82
摘要： There is provided a compression method for handling local brightness variation in video. The compression method estimates the weights from previously encoded and reconstructed neighboring pixels of the current block in the source picture and their corresponding motion predicted (or collocated) pixels in the reference pictures. Since the information is available in both the encoder and decoder for deriving these weights, no additional bits are required to be transmitted.
摘要翻译： 提供了用于处理视频中局部亮度变化的压缩方法。 压缩方法估计来自源图像中的当前块的先前编码和重建的相邻像素的权重以及它们在参考图像中的对应的运动预测（或并置）像素。 由于信息在编码器和解码器中均可用于导出这些权重，所以不需要传送额外的位。
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26.发明申请Method and Apparatus for Constrained Prediction for Reduced Resolution Update Mode and Complexity Scalability in Video Encoders and Decoders 审中-公开用于视频编码器和解码器中降低分辨率更新模式和复杂度可扩展性的约束预测的方法和装置公开(公告)号：US20090010333A1
公开(公告)日：2009-01-08
申请号：US12087370
申请日：2007-01-30
IPC分类号： H04N7/26
CPC分类号： H04N19/59 , H04N19/11 , H04N19/187 , H04N19/33 , H04N19/44 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/86
摘要： There are provided methods and apparatus for constrained prediction for reduced resolution update mode and complexity scalability in video encoders and decoders. A scalable complexity video encoder includes an encoder for encoding a block in a particular picture in the video sequence by generating an intra mode prediction for the block using a constrained intra prediction process that reduces artifacts for both low and high resolutions in a reduced resolution update mode when the particular picture is eventually decoded. The constrained intra prediction process reduces the artifacts by prohibiting the use of particular prediction modes associated with the introduction of the artifacts in the reduced resolution update mode.
摘要翻译： 提供了用于缩减分辨率更新模式和视频编码器和解码器中复杂度可扩展性的约束预测的方法和装置。 可缩放的复杂度视频编码器包括编码器，用于通过使用约束的帧内预测处理生成用于块的帧内模式预测来对视频序列中的特定图像进行编码，该处理减少分辨率更新模式中的低和高分辨率的伪影 当特定图片最终被解码时。 受限帧内预测处理通过禁止使用与在降低分辨率更新模式中引入伪像相关联的特定预测模式来减少伪像。
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27.发明申请Method and Apparatus for Adaptive Weight Selection for Motion Compensated Prediction 有权用于运动补偿预测的自适应权重选择的方法和装置公开(公告)号：US20090010330A1
公开(公告)日：2009-01-08
申请号：US12087315
申请日：2007-01-31
CPC分类号： H04N19/577 , H04N19/105 , H04N19/142 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/19 , H04N19/51 , H04N19/52 , H04N19/573 , H04N19/61
摘要： There are provided a method and apparatus for adaptive weight selection for motion compensated prediction. The apparatus includes an encoder for encoding a picture by deriving a set of weighting parameters, selecting at least one weighting parameter in the set based upon a selection criteria, and applying the selected at least one weighting parameter to a reference picture used to encode the picture.
摘要翻译： 提供了一种用于运动补偿预测的自适应权重选择的方法和装置。 该装置包括编码器，用于通过导出一组加权参数来对图像进行编码，基于选择标准来选择该组中的至少一个加权参数，以及将所选择的至少一个加权参数应用于用于编码图像的参考图像 。
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28.发明申请公开(公告)号：US20080253456A1
公开(公告)日：2008-10-16
申请号：US11662903
申请日：2005-09-14
IPC分类号： H04N7/32
CPC分类号： H04N19/189 , H04N19/105 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/61
摘要： There are provided video encoders, video decoders, and corresponding encoding and decoding methods for video data for a picture, wherein the video data has local brightness variation. The video encoder includes an encoder for inter-coding the video data using a localized weighted function to determine weights for the local brightness variation. The weights for the localized weighted function are derived without explicit coding.
摘要翻译： 提供视频编码器，视频解码器以及用于图像的视频数据的相应编码和解码方法，其中视频数据具有局部亮度变化。 视频编码器包括编码器，用于使用局部加权函数对视频数据进行帧间编码，以确定局部亮度变化的权重。 本地加权函数的权重是没有明确编码的。
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公开(公告)号：US20070047648A1
公开(公告)日：2007-03-01
申请号：US10569236
申请日：2004-08-24
申请人： Alexandros Tourapis , Jill Boyce , Peng Yin
发明人： Alexandros Tourapis , Jill Boyce , Peng Yin
IPC分类号： H04N11/04
CPC分类号： H04N19/577 , H04N19/107 , H04N19/109 , H04N19/11 , H04N19/119 , H04N19/136 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/44 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/895
摘要： A hybrid intra-inter bi-predictive (or multi-predictive) coding mode allows both intraframe (intra) and interframe (inter) predictions to be combined together for hybrid-encoding a current macroblock or a subblock Bi-prediction may be used also in I-pictures, combining two intra predictions that use two different intra prediction directions. A video encoder processes data representing a two-dimensional video image which has been produced by a conventional commercially available video camera. The video encoder is adapted to select, for coding a current macroblock, between an intra encoding mode, an P-frame inter encoding mode, a B-frame bi-predictive inter mode, and a hybrid intra-inter bi-predictive encoding mode. A video decoder (800) receives and decodes a data stream that may contain a block/macroblock encoded in accordance with the hybrid intra-inter bi-predictive encoding mode.
摘要翻译： 混合帧内双向预测（或多预测）编码模式允许将帧内（帧内）和帧间（帧间）预测组合在一起用于混合编码当前宏块或子块双预测也可以用于 I图像，组合使用两个不同的帧内预测方向的两个帧内预测。 视频编码器处理表示由传统市售摄像机产生的二维视频图像的数据。 视频编码器适于在帧内编码模式，P帧编码模式，B帧双预测帧间模式和混合帧内双向预测编码模式之间选择用于对当前宏块进行编码。 视频解码器（800）接收并解码可以包含根据混合帧内双向预测编码模式编码的块/宏块的数据流。
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公开(公告)号：US07003035B2
公开(公告)日：2006-02-21
申请号：US10186284
申请日：2002-06-27
申请人： Alexandros Tourapis , Feng Wu , Shipeng Li
发明人： Alexandros Tourapis , Feng Wu , Shipeng Li
IPC分类号： H04N7/12
CPC分类号： H04N19/109 , H04N19/147 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/56 , H04N19/573 , H04N19/577
摘要： Video coding methods and apparatuses are provided that make use of various models and/or modes to significantly improve coding efficiency especially for high/complex motion sequences. The methods and apparatuses take advantage of the temporal and/or spatial correlations that may exist within portions of the frames, e.g., at the Macroblocks level, etc. The methods and apparatuses tend to significantly reduce the amount of data required for encoding motion information while retaining or even improving video image quality.
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