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21. 发明授权

US08917768B2 Coding of motion vector information 有权
标题翻译：运动矢量信息编码
公开(公告)号：US08917768B2
公开(公告)日：2014-12-23
申请号：US12275782
申请日：2008-11-21
申请人： Sridhar Srinivasan , Pohsiang Hsu , Thomas W. Holcomb , Kunal Mukerjee , Bruce Chih-Lung Lin
发明人： Sridhar Srinivasan , Pohsiang Hsu , Thomas W. Holcomb , Kunal Mukerjee , Bruce Chih-Lung Lin
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/51 , H04N19/61 , G06K9/36 , G06K9/46 , H04N19/583 , H04N19/91
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
摘要翻译：描述用于编码和解码用于视频图像的运动矢量信息的技术和工具。例如，视频编码器通过针对一组像素共同编码一个开关码，运动矢量信息和指示后续数据是否被编码用于像素集合的终端符号来产生扩展运动矢量码。在另一方面，编码器/解码器为宏块选择运动矢量预测器。在另一方面，视频编码器/解码器使用混合运动矢量预测。在另一方面，视频编码器/解码器针对预测图像发送运动矢量模式。在另一方面，视频解码器通过接收扩展运动矢量码来解码一组像素，该扩展运动矢量码反映运动信息的联合编码以及帧内/帧间编码信息和终端符号。解码器基于例如终端符号确定对于像素集合是否存在后续数据。

22. 发明授权

US08687709B2 In-loop deblocking for interlaced video 有权
标题翻译：隔行视频的环路去块
公开(公告)号：US08687709B2
公开(公告)日：2014-04-01
申请号：US10934116
申请日：2004-09-04
申请人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas W. Holcomb
发明人： Pohsiang Hsu , Chih-Lung Lin , Sridhar Srinivasan , Thomas W. Holcomb
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
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。

23. 发明授权

US08498335B2 Adaptive deadzone size adjustment in quantization 有权
标题翻译：量化中的适应性死区大小调整
公开(公告)号：US08498335B2
公开(公告)日：2013-07-30
申请号：US11728895
申请日：2007-03-26
申请人： Thomas W. Holcomb , Minghui Xia , Chih-Lung Lin , Cheng Chang
发明人： Thomas W. Holcomb , Minghui Xia , Chih-Lung Lin , Cheng Chang
IPC分类号： H04N11/02 , H04N7/24
CPC分类号： H04N19/18 , H04N19/124 , H04N19/14 , H04N19/176
摘要： Techniques and tools are described for adaptive deadzone (“DZ”) resizing during quantization. For example, in some embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size of a selected quantizer depending on the texture of the block. In other embodiments, a video encoder adjusts DZ size depending on the frequency of a coefficient being quantized. In still other embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size depending on the texture of the block and the frequency of the coefficient being quantized.
摘要翻译：描述了在量化期间适应性死区（“DZ”）调整大小的技术和工具。例如，在一些实施例中，对于块的AC频率系数的量化，视频编码器根据块的纹理来调整所选量化器的DZ大小。在其他实施例中，视频编码器根据被量化的系数的频率来调整DZ大小。在其他实施例中，对于块的AC频率系数的量化，视频编码器根据块的纹理和被量化的系数的频率来调整DZ大小。

24. 发明授权

US08243797B2 Regions of interest for quality adjustments 有权
标题翻译：感兴趣的地区进行质量调整
公开(公告)号：US08243797B2
公开(公告)日：2012-08-14
申请号：US11731851
申请日：2007-03-30
申请人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
发明人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
IPC分类号： H04N11/02
CPC分类号： H04N19/17 , H04N19/124 , H04N19/147 , H04N19/162 , H04N19/61
摘要： Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).
摘要翻译：基于与感兴趣区域（“ROI”）相关联的信息来调整由编码器建立的质量设置。例如，可以减小量化步长（提高质量）或增加（以减少比特率）。可以识别ROI，并且可以基于从用户界面接收的输入来调整质量设置。可以针对对应于ROI重叠区域的图像的一部分来确定重叠设置。例如，从与第一重叠ROI和第二重叠ROI相对应的步长尺寸或从与第一ROI和第二ROI对应的步长的相对减小中选择重叠设置。可以通过指示ROI的空间维度和质量调整信息（例如，死区信息，步长信息和量化模式信息）的信息（例如，使用数据结构）对ROI进行参数化。

25. 发明授权

US08238424B2 Complexity-based adaptive preprocessing for multiple-pass video compression 有权
标题翻译：用于多通道视频压缩的基于复杂度的自适应预处理
公开(公告)号：US08238424B2
公开(公告)日：2012-08-07
申请号：US11673516
申请日：2007-02-09
申请人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
发明人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
IPC分类号： H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/15 , H04N19/172 , H04N19/177 , H04N19/194 , H04N19/61
摘要： Multiple-pass video encoding systems and techniques are described which utilize statistics taken during a first-pass encoding to create complexity measurements for video data which is to be encoded. By analyzing these complexity measurements, preprocessing decisions, such as, for example, the determination of strength of denoise filters, can be made with greater accuracy. In one implementation, these complexity measurements take the form of calculation of temporal and spatial complexity parameters, which are then used to compute a unified complexity parameter for each group of pictures being encoded.
摘要翻译：描述了多通道视频编码系统和技术，其利用在一次通过编码期间进行的统计以创建要被编码的视频数据的复杂度测量。通过分析这些复杂性测量，可以更准确地进行预处理决策，例如去噪滤波器的强度的确定。在一个实现中，这些复杂度测量采用时间和空间复杂度参数的计算形式，然后将其用于为正被编码的每组图像计算统一的复杂度参数。

26. 发明授权

US08189933B2 Classifying and controlling encoding quality for textured, dark smooth and smooth video content 有权
标题翻译：分类和控制纹理，黑暗平滑和平滑视频内容的编码质量
公开(公告)号：US08189933B2
公开(公告)日：2012-05-29
申请号：US12080406
申请日：2008-03-31
申请人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
发明人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
IPC分类号： G06K9/36
CPC分类号： H04N19/14 , H04N19/126 , H04N19/136 , H04N19/176
摘要： Techniques and tools for content classification and adaptive quantization are described. In an example implementation, a video encoding tool classifies blocks as textured, dark smooth or other smooth. The tool classifies a block as textured or non-textured by comparing the energy of AC coefficients for the block to a texture threshold, which can be set using a non-linear mapping of possible texture classification levels to possible texture thresholds. If a block is not textured, the tool further classifies the block as dark smooth or smooth depending on average intensity value for the block. Using the classification information and one or more control parameters to control bit allocation for dark smooth content relative to other smooth content, the tool encodes the video and outputs encoded video information. Example multi-pass approaches to setting the control parameters are also described.
摘要翻译：描述了用于内容分类和自适应量化的技术和工具。在示例实现中，视频编码工具将块分类为纹理，暗光滑或其他平滑。该工具通过将块的AC系数的能量与纹理阈值进行比较来将块分类为纹理或非纹理，其可以使用可能的纹理分类级别与可能的纹理阈值的非线性映射来设置。如果块没有纹理，则工具根据块的平均强度值进一步将块分类为黑光滑或平滑。使用分类信息和一个或多个控制参数来控制相对于其他平滑内容的暗平滑内容的位分配，工具对视频进行编码并输出编码视频信息。还描述了设置控制参数的示例多路径方法。

27. 发明授权

US08116380B2 Signaling for field ordering and field/frame display repetition 有权
标题翻译：信令用于场排序和场/帧显示重复
公开(公告)号：US08116380B2
公开(公告)日：2012-02-14
申请号：US10934117
申请日：2004-09-04
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Kunal Mukerjee , Pohsiang Hsu
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Kunal Mukerjee , Pohsiang Hsu
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
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 processes a first bitstream element (e.g., a pull-down flag) in a first syntax layer (e.g., sequence layer or entry point layer) above frame layer in a bitstream for a video sequence, the bitstream comprising encoded source video having a source type (e.g., progressive or interlace). The decoder processes frame data in a second syntax layer (e.g., frame layer) of the bitstream for a frame (such as an interlaced frame or progressive frame, depending on source type, or a skipped frame) in the video sequence. The first bitstream element indicates whether a repeat-picture element (e.g., a repeat-frame element or a repeat field-element) is present or absent in the frame data in the second syntax layer.
摘要翻译：解码器在用于视频序列的比特流中处理帧层上方的第一语法层（例如，序列层或入口点层）中的第一比特流元素（例如，下拉标志），该比特流包括经编码的源视频，其具有源类型（例如渐进或交错）。解码器在视频序列中的帧（例如隔行帧或逐行帧，取决于源类型或跳过的帧）的第二语法层（例如，帧层）中处理帧数据。第一比特流元素指示第二语法层中的帧数据中是否存在重复图像元素（例如，重复帧元素或重复场元素）。

28. 发明授权

US08085844B2 Signaling reference frame distances 有权
标题翻译：信号参考帧距离
公开(公告)号：US08085844B2
公开(公告)日：2011-12-27
申请号：US10990236
申请日：2004-11-15
申请人： Thomas W. Holcomb , Kunal Mukerjee , Chih-Lung Lin
发明人： Thomas W. Holcomb , Kunal Mukerjee , Chih-Lung Lin
IPC分类号： H04N7/32 , H04N7/26 , H04N7/50
CPC分类号： H04N19/573 , H04N19/112 , H04N19/172 , H04N19/517 , H04N19/70
摘要： Techniques and tools for signaling reference frame distances are described. For example, a video encoder signals a code for a reference frame distance for a current field-coded interlaced video frame. The code indicates a count of frames (e.g., bi-directionally predicted frames) between the current frame and a preceding reference frame. The code may be a variable length code signaled in the frame header for the current frame. The encoder may selectively signal the use of a default value for reference frame distances rather than signal a reference frame distance per frame. A video decoder performs corresponding parsing and decoding.
摘要翻译：描述用于信令参考帧距离的技术和工具。例如，视频编码器针对当前字段编码的隔行视频帧的参考帧距离的码进行信号。代码指示当前帧和先前参考帧之间的帧计数（例如，双向预测帧）。代码可以是在当前帧的帧头中发信号的可变长度代码。编码器可以选择性地通知使用参考帧距离的默认值，而不是每帧参考帧距离的信号。视频解码器执行相应的解析和解码。

29. 发明授权

US07852919B2 Field start code for entry point frames with predicted first field 有权
标题翻译：具有预测第一个字段的入口点帧的现场起始码
公开(公告)号：US07852919B2
公开(公告)日：2010-12-14
申请号：US10989596
申请日：2004-11-15
申请人： Regis J. Crinon , Thomas W. Holcomb , Shankar Regunathan , Sridhar Srinivasan
发明人： Regis J. Crinon , Thomas W. Holcomb , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： H04N7/32 , H04N3/10
CPC分类号： H04N19/44 , H04N19/70
摘要： A decoder receives a field start code for an entry point key frame. The field start code indicates a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame and indicates a point to begin decoding of the second coded interlaced video field. The first coded interlaced video field is a predicted field, and the second coded interlaced video field is an intra-coded field. The decoder decodes the second field without decoding the first field. The field start code can be followed by a field header. The decoder can receive a frame header for the entry point key frame. The frame header may comprise a syntax element indicating a frame coding mode for the entry point key frame and/or a syntax element indicating field types for the first and second coded interlaced video fields.
摘要翻译：解码器接收入口点关键帧的场起始码。场起始码指示入口点关键帧中的第一编码隔行扫描视频字段之后的入口点关键帧中的第二编码隔行扫描视频字段，并且指示开始对第二编码交错视频字段进行解码的点。第一编码隔行视频字段是预测字段，第二编码隔行视频字段是帧内编码字段。解码器解码第二场而不解码第一场。字段起始码可以后跟一个字段标题。解码器可以接收入口点关键帧的帧头。帧头可以包括指示用于入口点关键帧的帧编码模式的语法元素和/或指示第一和第二编码隔行视频字段的字段类型的语法元素。

30. 发明授权

US07733962B2 Reconstructed frame caching 失效
标题翻译：重构帧缓存
公开(公告)号：US07733962B2
公开(公告)日：2010-06-08
申请号：US10730534
申请日：2003-12-08
申请人： Rebecca C. Weiss , Geoffrey T. Dunbar , Niranjan S. Nayak , Sohail Baig Mohammed , Thomas W. Holcomb , Chih-lung Bruce Lin , Olivier Colle , Gareth Alan Howell
发明人： Rebecca C. Weiss , Geoffrey T. Dunbar , Niranjan S. Nayak , Sohail Baig Mohammed , Thomas W. Holcomb , Chih-lung Bruce Lin , Olivier Colle , Gareth Alan Howell
IPC分类号： H04N7/12 , H04N7/26
CPC分类号： G11B27/34 , G11B27/105
摘要： Systems and methods for processing input media in a computing device are described. In one aspect, a reconstructed frame is cached according to a set of criteria. A request to scrub to a predictive frame of input media is received. Responsive to receiving the request, the predictive frame is decoded starting with the reconstructed frame.
摘要翻译：描述了用于在计算设备中处理输入介质的系统和方法。在一个方面，根据一组标准来缓存重建的帧。接收到擦除输入媒体的预测帧的请求。响应于接收请求，从重构帧开始解码预测帧。

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