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公开(公告)号：US20050152457A1
公开(公告)日：2005-07-14
申请号：US10987521
申请日：2004-11-12
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
CPC分类号： H04N19/86 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/184 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/61 , H04N19/70 , H04N19/82
摘要： A video codec efficiently signals that a frame is identical to its reference frame, such that separate coding of its picture content is skipped. Information that a frame is skipped is represented jointly in a coding table of a frame coding type element for bit rate efficiency in signaling. Further, the video codec signals the picture type (e.g., progressive or interlaced) of skipped frames, which permits different repeat padding methods to be applied according to the picture type.
摘要翻译： 视频编解码器有效地发信号通知帧与其参考帧相同，从而跳过其图像内容的单独编码。 帧跳过的信息在信令中的比特率效率的帧编码型元件的编码表中联合表示。 此外，视频编解码器针对跳过的帧的图像类型（例如，逐行或隔行扫描）进行信号，这允许根据图像类型应用不同的重复填充方法。
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2.发明申请公开(公告)号：US20050053142A1
公开(公告)日：2005-03-10
申请号：US10933956
申请日：2004-09-02
申请人： Thomas Holcomb , Pohsiang Hsu , Chih-Lung Lin
发明人： Thomas Holcomb , Pohsiang Hsu , Chih-Lung Lin
CPC分类号： H04N19/16 , H04N19/137 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools for hybrid motion vector prediction for interlaced forward-predicted fields are described. For example, a video decoder determines an initial motion vector predictor for a motion vector of an interlaced forward-predicted field. The decoder then checks a variation condition based at least in part on a predictor polarity selection (e.g., same or opposite), the initial motion vector predictor, and neighbor motion vectors. If the variation condition is satisfied, the decoder uses one of the neighbor motion vectors as a final motion vector predictor. Otherwise, the decoder uses the initial motion vector predictor as the final motion vector predictor. A video encoder performs corresponding processing.
摘要翻译： 描述了用于隔行正向预测场的混合运动矢量预测的技术和工具。 例如，视频解码器确定用于隔行扫描前向预测场的运动矢量的初始运动矢量预测器。 解码器至少部分地基于预测器极性选择（例如相同或相反），初始运动矢量预测器和相邻运动矢量来检查变化条件。 如果满足变化条件，则解码器使用相邻运动矢量之一作为最终运动矢量预测器。 否则，解码器使用初始运动矢量预测器作为最终运动矢量预测器。 视频编码器执行相应的处理。
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公开(公告)号：US20060146830A1
公开(公告)日：2006-07-06
申请号：US11027294
申请日：2004-12-30
申请人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas Holcomb
发明人： Chih-Lung Lin , Minghui Xia , Pohsiang Hsu , Shankar Regunathan , Thomas Holcomb
CPC分类号： H04N19/89 , H04N19/103 , H04N19/124 , H04N19/166 , H04N19/172 , H04N19/188 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/91
摘要： Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
摘要翻译： 公开了使用帧缓存来改善丢包恢复的各种新的和不明显的装置和方法。 所公开的实施例之一是用于在编码器及其对应的解码器内使用周期性和同步帧缓存的方法。 当解码器发现分组丢失时，它通知编码器，然后编码器基于存储在编码器和解码器的共享帧之一来生成帧。 当解码器接收到该生成的帧时，它可以使用其本地缓存的帧进行解码。
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4.发明申请Efficient repeat padding for hybrid video sequence with arbitrary video resolution 有权用于具有任意视频分辨率的混合视频序列的高效重复填充公开(公告)号：US20060072669A1
公开(公告)日：2006-04-06
申请号：US10960384
申请日：2004-10-06
CPC分类号： H04N19/59 , H04N19/102 , H04N19/119 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/563 , H04N19/61 , H04N19/70
摘要： A video codec provides efficient repeat padding of hybrid video sequences having arbitrary video resolution. The video codec repeat pads to expand the active content of pictures in the video sequence out to meet an adaptive vertical macroblock alignment restriction that varies by picture type. For progressive type pictures, the video codec repeats the last row or horizontal boundary edge of the active content. For interlaced type pictures, the video coded repeats the last two rows (last row of each interlaced field) of the active content. This repeat padding differing by picture type provides a better prediction (lower prediction error residual) for macroblocks in following predicted frames whose motion vector points into the padded region.
摘要翻译： 视频编解码器提供具有任意视频分辨率的混合视频序列的有效重复填充。 视频编解码器重复播放以扩展视频序列中的图像的活动内容，以满足由图像类型变化的自适应垂直宏块对准限制。 对于渐进式图像，视频编解码器重复活动内容的最后一行或水平边界边缘。 对于隔行扫描型图像，视频编码重复活动内容的最后两行（每个隔行字段的最后一行）。 这种不同于图像类型的重复填充对于其运动向量指向填充区域的后续预测帧中的宏块提供了更好的预测（较低的预测误差残差）。
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公开(公告)号：US20050053145A1
公开(公告)日：2005-03-10
申请号：US10934929
申请日：2004-09-02
IPC分类号： G06K9/36 , H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： A decoder decodes skipped macroblocks of an interlaced frame. Skipped macroblocks use exactly one motion vector and have no motion vector differential information, and lack residual information. The skipped macroblock signal indicates one-motion-vector coding. The skipped macroblock signal can be a compressed bitplane (in a selected bitplane coding mode) sent at frame layer in a bitstream, or an individual bit sent at macroblock layer. In another aspect, an encoder jointly encodes motion compensation type and field/frame coding type for a macroblock in an interlaced P-frame. The encoder also can jointly encode other information for the macroblock (e.g., the presence of a differential motion vector). A decoder decodes a joint code (e.g., a variable length code in a variable length code table) to obtain both motion compensation type and field/frame coding type (and potentially other information) for the macroblock.
摘要翻译： 解码器解码交错帧的跳过的宏块。 跳过的宏块只使用一个运动矢量，没有运动矢量差分信息，缺少残留信息。 跳过的宏块信号表示一运动矢量编码。 跳过的宏块信号可以是在比特流中的帧层处发送的压缩位平面（以选定的位平面编码模式）或在宏块层发送的单个比特。 另一方面，编码器联合编码交错P帧中的宏块的运动补偿类型和场/帧编码类型。 编码器还可以联合编码宏块的其他信息（例如，差分运动矢量的存在）。 解码器对联合码（例如，可变长度码表中的可变长度码）解码以获得宏块的运动补偿类型和场/帧编码类型（以及潜在的其他信息）。
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公开(公告)号：US20050053143A1
公开(公告)日：2005-03-10
申请号：US10933958
申请日：2004-09-02
IPC分类号： H04N7/32 , G06K9/36 , H03M7/36 , H03M7/40 , H03M7/46 , H04N20060101 , H04N7/01 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/16 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/93
摘要： Techniques and tools for using motion vector block patterns in video encoding and decoding are described. In general, a motion vector block pattern signals the presence or absence of motion vector data for a macroblock with multiple motion vectors. For example, a video decoder decodes variable length codes that represent motion vector block patterns. Each motion vector block pattern has one bit per corresponding luminance motion vector of a macroblock with multiple luminance motion vectors, where the one bit indicates whether or not motion vector data for the corresponding luminance motion vector is signaled. A video encoder performs corresponding encoding.
摘要翻译： 描述了在视频编码和解码中使用运动矢量块模式的技术和工具。 一般来说，运动矢量块模式用具有多个运动矢量的宏块发送运动矢量数据的存在或不存在。 例如，视频解码器解码表示运动矢量块图案的可变长度码。 每个运动矢量块图案具有具有多个亮度运动矢量的宏块的每个对应的亮度运动矢量的一位，其中一位指示是否用信号通知相应的亮度运动矢量的运动矢量数据。 视频编码器执行相应的编码。
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公开(公告)号：US20050084012A1
公开(公告)日：2005-04-21
申请号：US10934116
申请日：2004-09-04
IPC分类号： G06K9/36 , H03M7/40 , H03M7/46 , H04N7/12 , H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36 , H04N7/50
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： An encoder/decoder obtains pixel data from one or more field lines associated with a first block in an interlaced frame coded picture comprising plural macroblocks each having an equal number of top and bottom field lines. The encoder/decoder obtains pixel data from one or more field lines associated with a second block and performs in-loop deblocking filtering across a boundary. The in-loop deblocking filtering comprises filter operations performed on pixel data from field lines of same polarity only. In another aspect, an encoder/decoder obtains transform size information for plural blocks of macroblock, obtains field/frame type information for the macroblock and selects one or more boundaries for in-loop deblocking based at least in part on the transform size information and the field/frame type information. In-loop deblocking can be performed on horizontal block boundaries prior to vertical block boundaries.
摘要翻译： 编码器/解码器从隔行扫描帧编码图像中的与第一块相关联的一个或多个场线获得像素数据，该帧包括多个具有相等数目的顶场和底场的行的宏块。 编码器/解码器从与第二块相关联的一个或多个场线获取像素数据，并且跨越边界执行循环去块滤波。 循环去块滤波包括对相同极性的场线的像素数据执行的滤波操作。 在另一方面，编码器/解码器获得多个宏块块的变换大小信息，获得宏块的场/帧类型信息，并至少部分基于变换大小信息选择一个或多个边界进行循环去块， 字段/帧类型信息。 可以在垂直块边界之前的水平块边界上执行环路解块。
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公开(公告)号：US20050053296A1
公开(公告)日：2005-03-10
申请号：US10933959
申请日：2004-09-02
IPC分类号： G06K9/36 , H04N20060101
CPC分类号： H04N19/16 , H04N19/103 , H04N19/112 , H04N19/176 , H04N19/46 , H04N19/70
摘要： In one aspect, for a first interlaced video frame in a video sequence, a decoder decodes a bitplane signaled at frame layer for the first interlaced video frame. The bitplane represents field/frame transform types for plural macroblocks of the first interlaced video frame. For a second interlaced video frame in the video sequence, for each of at least one but not all of plural macroblocks of the second interlaced video frame, the decoder processes a per macroblock field/frame transform type bit signaled at macroblock layer. An encoder performs corresponding encoding.
摘要翻译： 在一个方面，对于视频序列中的第一隔行视频帧，解码器解码用于第一隔行视频帧的在帧层处发信号的位平面。 该位平面表示第一隔行视频帧的多个宏块的场/帧变换类型。 对于视频序列中的第二隔行视频帧，对于第二隔行视频帧的多个宏块中的至少一个但不是全部的宏块中的每一个，解码器处理在宏块层处发送信号的每宏块字段/帧变换类型位。 编码器执行相应的编码。
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公开(公告)号：US20050053288A1
公开(公告)日：2005-03-10
申请号：US10680072
申请日：2003-10-06
申请人： Sridhar Srinivasan , Chih-Lung Lin , Pohsiang Hsu , Thomas Holcomb , Ming-Chieh Lee , Jordi Ribas-Corbera
发明人： Sridhar Srinivasan , Chih-Lung Lin , Pohsiang Hsu , Thomas Holcomb , Ming-Chieh Lee , Jordi Ribas-Corbera
CPC分类号： H04N19/00 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/16 , H04N19/162 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/184 , H04N19/192 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/527 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/91
摘要： Techniques and tools for bitstream-controlled filtering are described. For example, a video encoder puts control information into a bitstream for encoded video. A video decoder decodes the encoded video and, according to the control information, performs post-processing filtering on the decoded video with a de-ringing and/or de-blocking filter. Typically, a content author specifies the control information to the encoder. The control information itself is post-processing filter levels, filter selections, and/or some other type of information. In the bitstream, the control information is specified for a sequence, scene, frame, region within a frame, or at some other syntax level.
摘要翻译： 描述了位流控制滤波的技术和工具。 例如，视频编码器将控制信息放入编码视频的位流中。 视频解码器对编码的视频进行解码，并且根据控制信息，使用解除和/或去块滤波器对解码的视频进行后处理滤波。 通常，内容作者将控制信息指定给编码器。 控制信息本身是后处理过滤器级别，过滤器选择和/或某种其他类型的信息。 在比特流中，为帧内的序列，场景，帧，区域，或某些其他语法级别指定控制信息。
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公开(公告)号：US20050036699A1
公开(公告)日：2005-02-17
申请号：US10893166
申请日：2004-07-17
CPC分类号： H04N19/17 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/137 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/61 , H04N19/70
摘要： With adaptive multiple quantization, a video or other digital media codec can adaptively select among multiple quantizers to apply to transform coefficients based on content or bit rate constraints, so as to improve quality through rate-distortion optimization. The switch in quantizers can be signaled at the sequence level or frame level of the bitstream syntax, or can be implicitly specified in the syntax.
摘要翻译： 利用自适应多量化，视频或其他数字媒体编解码器可以在多个量化器之间进行自适应选择，以应用于基于内容或比特率约束的变换系数，从而通过速率失真优化来提高质量。 量化器中的开关可以在比特流语法的序列级别或帧级别发出信号，或者可以在语法中隐式指定。
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