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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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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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4.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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5.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：US09602840B2
公开(公告)日：2017-03-21
申请号：US12087637
申请日：2007-01-07
IPC分类号： H04N7/12 , H04N19/87 , H04N19/61 , H04N19/114 , H04N19/14 , H04N19/137 , H04N19/142 , H04N19/177
CPC分类号： H04N19/87 , H04N19/114 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/177 , H04N19/61
摘要： There are provided a method and apparatus for adaptive Group of Pictures structure selection. The apparatus includes an encoder for encoding a video sequence using a Group of Pictures structure by performing, for each Group of Pictures for the video sequence, picture coding order selection, picture type selection, and reference picture selection. The selections are based upon a Group of Pictures length.
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7.发明授权Method and apparatus for reusing available motion information as a motion estimation predictor for video encoding 有权用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置公开(公告)号：US08634469B2
公开(公告)日：2014-01-21
申请号：US12087915
申请日：2007-02-01
申请人： Xiaoan Lu , Alexandros Tourapis , Jill MacDonald Boyce , Peng Yin
发明人： Xiaoan Lu , Alexandros Tourapis , Jill MacDonald Boyce , Peng Yin
CPC分类号： H04N19/109 , H04N19/137 , H04N19/176 , H04N19/40 , H04N19/51 , H04N19/56 , H04N19/57
摘要： There are provided a method and apparatus for reusing available motion information as a motion estimation predictor for video encoding. The apparatus includes an encoder for encoding an image block by determining a motion estimation predictor for the image block using motion information previously generated from an element other than the encoder, and using the motion estimation predictor in a motion estimation process to generate a motion vector for the image block. The motion estimation predictor is used in place of at least one predictor otherwise used in the motion estimation process. The at least one predictor is any of a search window predictor, a temporal predictor, and a block type predictor.
摘要翻译： 提供了一种用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置。 该装置包括编码器，用于通过使用先前从编码器之外的元素生成的运动信息确定图像块的运动估计预测器，并且在运动估计处理中使用运动估计预测器来生成运动矢量 图像块。 使用运动估计预测器代替否则在运动估计过程中使用的至少一个预测器。 所述至少一个预测器是搜索窗口预测器，时间预测器和块类型预测器中的任何一个。
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8.发明授权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：US08498336B2
公开(公告)日：2013-07-30
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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公开(公告)号：US08085845B2
公开(公告)日：2011-12-27
申请号：US10569236
申请日：2004-08-24
IPC分类号： H04N7/12
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 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，以对当前宏块或子块进行混合编码。 双预测也可以用在I图像中，组合使用两个不同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：US20100220939A1
公开(公告)日：2010-09-02
申请号：US12223051
申请日：2007-01-30
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/50 , G06T7/13 , G06T2207/10016 , G06T2207/20012 , G06T2207/20182 , H04N7/0142 , H04N19/577 , H04N19/59 , H04N19/615 , H04N19/63 , H04N19/80 , H04N19/86
摘要： There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter, a motion compensator, a deblocking filter, and a temporal filter. The spatial filter is for spatially filtering a picture in the sequence and at least one reference picture selected from among previous pictures and subsequent pictures in the sequence with respect to the picture. The motion compensator, in signal communication with the spatial filter, is for forming, subsequent to spatial filtering, multiple temporal predictions for the picture from the at least one reference picture. The deblocking filter, in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter, in signal communication with the deblocking filter, is for temporally filtering the multiple temporal predictions and combining the multiple temporal predictions to generate a noise reduced version of the picture.
摘要翻译： 提供了基于边缘的时空滤波的方法和装置。 用于对图像序列进行滤波的装置包括空间滤波器，运动补偿器，去块滤波器和时间滤波器。 空间滤波器用于对序列中的图像进行空间滤波，并且选择相对于图像的序列中的先前图像和后续图像中的至少一个参考图像。 与空间滤波器进行信号通信的运动补偿器用于在空间滤波之后形成来自至少一个参考图片的图像的多个时间预测。 与运动补偿器进行信号通信的去块滤波器用于对多个时间预测进行去块滤波。 与去块滤波器进行信号通信的时间滤波器用于对多个时间预测进行时间滤波并组合多个时间预测以产生图像的降噪版本。
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