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71. 发明申请

US20050053288A1 Bitstream-controlled post-processing filtering 有权
标题翻译：位流控制后处理过滤
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
IPC分类号： H04N7/24 , G06F15/00 , H03M7/40 , H04N19/00 , G06K9/36
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。

72. 发明申请

US20050036699A1 Adaptive multiple quantization 有权
标题翻译：自适应多重量化
公开(公告)号：US20050036699A1
公开(公告)日：2005-02-17
申请号：US10893166
申请日：2004-07-17
申请人： Thomas Holcomb , Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan
发明人： Thomas Holcomb , Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan
IPC分类号： G06K9/36 , G06K9/46 , H04N7/12 , H04N7/26 , H04N7/50
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。

73. 发明申请

US20060072669A1 Efficient repeat padding for hybrid video sequence with arbitrary video resolution 有权
标题翻译：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
申请人： Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan , Thomas Holcomb
发明人： Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan , Thomas Holcomb
IPC分类号： H04N11/04 , H04N7/12 , H04B1/66 , H04N11/02
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）。

74. 发明申请

US20050053145A1 Macroblock information signaling for interlaced frames 有权
标题翻译：用于隔行扫描帧的宏块信息信令
公开(公告)号：US20050053145A1
公开(公告)日：2005-03-10
申请号：US10934929
申请日：2004-09-02
申请人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
发明人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas Holcomb
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）。

75. 发明申请

US20050053143A1 Motion vector block pattern coding and decoding 有权
标题翻译：运动矢量块模式编码和解码
公开(公告)号：US20050053143A1
公开(公告)日：2005-03-10
申请号：US10933958
申请日：2004-09-02
申请人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
发明人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
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。

76. 发明授权

US08503536B2 Quantization adjustments for DC shift artifacts 有权
标题翻译： DC偏移伪影的量化调整
公开(公告)号：US08503536B2
公开(公告)日：2013-08-06
申请号：US11400785
申请日：2006-04-07
申请人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
发明人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/117 , H04N19/124 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/192 , H04N19/61 , H04N19/86
摘要： A video encoder identifies one or more portions of a video picture that contain DC shift blocks and adjusts quantization (e.g., by selecting a smaller quantization step size) to reduce contouring artifacts when the picture is reconstructed. The encoder can identify the portion(s) of the picture that contain DC shift blocks by identifying one or more gradient slope regions in the picture and analyzing quantization effects on DC coefficients in the gradient slope region(s). The encoder can select a coarser quantization step size for a high-texture picture portion.
摘要翻译：视频编码器识别包含DC移位块的视频图像的一个或多个部分，并且调整量化（例如，通过选择较小的量化步长）以减少重构图像时的轮廓伪影。编码器可以通过识别图像中的一个或多个梯度斜率区域并分析对梯度斜率区域中的DC系数的量化效应来识别包含DC移位块的图像的部分。编码器可以为高纹理图像部分选择较粗的量化步长。

77. 发明授权

US08130828B2 Adjusting quantization to preserve non-zero AC coefficients 有权
标题翻译：调整量化以保持非零AC系数
公开(公告)号：US08130828B2
公开(公告)日：2012-03-06
申请号：US11400741
申请日：2006-04-07
申请人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
发明人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02
CPC分类号： H04N19/126 , H04N19/61
摘要： A video encoder identifies one or more AC coefficients of each of plural blocks in the picture. The encoder identifies a threshold quantization step size such that the identified AC coefficient(s) of each of the plural blocks are nonzero after quantization according to the threshold quantization step size. The threshold quantization step size is such that quantization according to the next higher quantization step size would result in at least one of the identified AC coefficient(s) of at least one of the plural blocks being zero. For example, identifying the threshold quantization step size comprises identifying n top AC coefficients in each of four blocks of a macroblock, determining the smallest AC coefficient among the identified n top AC coefficients of the four blocks, and iteratively evaluating the smallest AC coefficient with respect to candidate quantization step sizes until the threshold quantization step size is identified.
摘要翻译：视频编码器识别图像中的多个块中的每一个的一个或多个AC系数。编码器识别阈值量化步长，使得根据阈值量化步长，多个块中的每一个的所识别的AC系数在量化之后是非零的。阈值量化步长使得根据下一较高量化步长的量化将导致至少一个多个块中的至少一个的系数中的至少一个为零。例如，识别阈值量化步长包括识别宏块的四个块中的每一个中的n个顶部AC系数，确定四个块的所识别的n个顶部AC系数中的最小AC系数，并且相对于到候选量化步长，直到识别阈值量化步长。

78. 发明申请

US20070237221A1 Adjusting quantization to preserve non-zero AC coefficients 有权
标题翻译：调整量化以保持非零AC系数
公开(公告)号：US20070237221A1
公开(公告)日：2007-10-11
申请号：US11400741
申请日：2006-04-07
申请人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
发明人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
IPC分类号： H04N11/04
CPC分类号： H04N19/126 , H04N19/61
摘要： A video encoder identifies one or more AC coefficients of each of plural blocks in the picture. The encoder identifies a threshold quantization step size such that the identified AC coefficient(s) of each of the plural blocks are nonzero after quantization according to the threshold quantization step size. The threshold quantization step size is such that quantization according to the next higher quantization step size would result in at least one of the identified AC coefficient(s) of at least one of the plural blocks being zero. For example, identifying the threshold quantization step size comprises identifying n top AC coefficients in each of four blocks of a macroblock, determining the smallest AC coefficient among the identified n top AC coefficients of the four blocks, and iteratively evaluating the smallest AC coefficient with respect to candidate quantization step sizes until the threshold quantization step size is identified.
摘要翻译：视频编码器识别图像中的多个块中的每一个的一个或多个AC系数。编码器识别阈值量化步长，使得根据阈值量化步长，多个块中的每一个的所识别的AC系数在量化之后是非零的。阈值量化步长使得根据下一较高量化步长的量化将导致至少一个多个块中的至少一个的系数中的至少一个为零。例如，识别阈值量化步长包括识别宏块的四个块中的每一个中的n个顶部AC系数，确定四个块的所识别的n个顶部AC系数中的最小AC系数，并且相对于到候选量化步长，直到识别阈值量化步长。

79. 发明申请

US20050053140A1 Signaling macroblock mode information for macroblocks of interlaced forward-predicted fields 有权
标题翻译：用于隔行正向预测场的宏块的信令宏块模式信息
公开(公告)号：US20050053140A1
公开(公告)日：2005-03-10
申请号：US10933880
申请日：2004-09-02
申请人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
发明人： Thomas Holcomb , Pohsiang Hsu , Sridhar Srinivasan , Chih-Lung Lin
IPC分类号： H04N7/32 , H03M7/36 , H04N20060101 , H04N7/01 , H04N7/12 , H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/16 , H04N19/137 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools for code table selection and joint coding/decoding of macroblock mode information for macroblocks of interlaced forward-predicted frames are described. For example, a video decoder decodes a variable length code that jointly signals macroblock mode information for a motion-compensated macroblock. The jointly signaled information includes a macroblock type, whether a coded block pattern is present or absent, and whether motion vector data is present or absent for the motion-compensated macroblock. A video encoder performs corresponding encoding.
摘要翻译：描述用于隔行扫描前向预测帧的宏块的宏块模式信息的码表选择和联合编码/解码的技术和工具。例如，视频解码器对可变长度码进行解码，该可变长度码联合发送用于运动补偿宏块的宏块模式信息。联合信号的信息包括宏块类型，是否存在编码块模式，以及运动矢量数据是否存在或不存在于运动补偿宏块。视频编码器执行相应的编码。

80. 发明申请

US20060072673A1 Decoding variable coded resolution video with native range/resolution post-processing operation 有权
标题翻译：用原始范围/分辨率后处理操作解码可变编码分辨率视频
公开(公告)号：US20060072673A1
公开(公告)日：2006-04-06
申请号：US11118686
申请日：2005-04-29
申请人： Thomas Holcomb , Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan
发明人： Thomas Holcomb , Chih-Lung Lin , Pohsiang Hsu , Sridhar Srinivasan
IPC分类号： H04N11/02 , H04N11/04 , H04N7/12 , H04B1/66
CPC分类号： H04N19/59 , H04N19/107 , H04N19/136 , H04N19/152 , H04N19/156 , H04N19/164 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/179 , H04N19/46 , H04N19/70 , H04N19/80
摘要： A video codec provides for encoding and decoding pictures of a video sequence at various coded resolutions, such that pictures can be encoded at lower coded resolutions based on bit rate or other constraints while maintaining a consistent display resolution. The video codec further provide for encoding and decoding pictures of the video sequence at ranges lower than that used for display, and then expanding the range after decoding for display. The video codec applies post-processing operations, such as de-blocking, de-ringing, and color conversion, at the native resolution and range of the decoded video, prior to range expansion and upsampling for display.
摘要翻译：视频编解码器提供以各种编码分辨率编码和解码视频序列的图像，使得可以在保持一致的显示分辨率的情况下，以比特率或其他约束为基础，以较低的编码分辨率编码图像。视频编解码器进一步提供对视频序列的图像进行编码和解码，范围低于用于显示的视频序列，然后扩展解码后的范围进行显示。视频编解码器在范围扩展和上采样显示之前，以解码视频的原始分辨率和范围应用后处理操作，如解块，去声和颜色转换。

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