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公开(公告)号：US20130010861A1
公开(公告)日：2013-01-10
申请号：US13614453
申请日：2012-09-13
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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公开(公告)号：US08218624B2
公开(公告)日：2012-07-10
申请号：US10893167
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： At high bit rates, the reconstruction error of compressed video is generally proportional to the squared value of quantization step size, such that full quantization step size increments at high bit rates can lead to significant change in the reconstruction error and/or bit rate of the compressed video. A video codec uses fractional increments of quantization step size at high bit rates to permit a more continuous variation of quality and/or bit rate as the quantization scale changes. For high bit rate scenarios, the bit stream syntax includes an additional syntax element to specify fractional step increments (e.g., half step) of the normal quantizer scale step sizes.
摘要翻译： 在高比特率下，压缩视频的重构误差通常与量化步长的平方值成比例，使得在高比特率下的全量化步长增加可导致重构误差和/或比特率的显着变化 压缩视频。 视频编解码器以高比特率使用量化步长的分数增量，以允许质量和/或比特率随着量化比例的变化而更连续地变化。 对于高比特率场景，比特流语法包括额外的语法元素，用于指定正常量化器缩放步长的分数阶增量（例如，半步长）。
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公开(公告)号：US08107531B2
公开(公告)日：2012-01-31
申请号：US10987521
申请日：2004-11-12
申请人： Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
发明人： Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
IPC分类号： H04N7/12
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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4.发明授权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：US07822123B2
公开(公告)日：2010-10-26
申请号：US10960384
申请日：2004-10-06
IPC分类号： H04N7/12
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：US07469011B2
公开(公告)日：2008-12-23
申请号：US10933910
申请日：2004-09-02
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： Techniques and tools for escape mode code resizing are described. For example, a video decoder receives encoded information (e.g., runs, levels) for transform coefficients of blocks. For at least some of the encoded information, the decoder decodes in an escape mode for which codes have sizes signaled on a sub-frame basis (e.g., on a per-interlaced field basis in a video frame, or on a per-slice basis in a video frame). A video encoder performs corresponding encoding and signaling.
摘要翻译： 描述了用于逃生模式代码调整大小的技术和工具。 例如，视频解码器接收块的变换系数的编码信息（例如，运行，级别）。 对于编码信息中的至少一些，解码器以一个逃逸模式进行解码，对于这些模式，代码具有以子帧为基础的信号大小（例如，以视频帧中的每个隔行扫描的字段为基础，或者以每片为单位） 在视频帧中）。 视频编码器执行相应的编码和信号。
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公开(公告)号：US08687697B2
公开(公告)日：2014-04-01
申请号：US13455094
申请日：2012-04-24
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.
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公开(公告)号：US20120213280A1
公开(公告)日：2012-08-23
申请号：US13455094
申请日：2012-04-24
IPC分类号： H04N7/32
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。
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8.发明授权Decoding variable coded resolution video with native range/resolution post-processing operation 有权用原始范围/分辨率后处理操作解码可变编码分辨率视频公开(公告)号：US08243820B2
公开(公告)日：2012-08-14
申请号：US11118686
申请日：2005-04-29
IPC分类号： H04N7/12
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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9.发明授权公开(公告)号：US07616692B2
公开(公告)日：2009-11-10
申请号：US10933956
申请日：2004-09-02
申请人： Thomas W. Holcomb , Pohsiang Hsu , Chih-Lung Lin
发明人： Thomas W. 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：US07602851B2
公开(公告)日：2009-10-13
申请号：US10623195
申请日：2003-07-18
IPC分类号： H04N7/12
CPC分类号： H04N19/17 , H04N19/124 , H04N19/137 , H04N19/176
摘要： With intelligent differential quantization, a video codec intelligently quantizes video at differing strength levels within a frame, such as on a macroblock (MB) or a group of MB basis. This allows the codec to control bit usage on a finer granularity than a frame to meet hardware constraints, as well as providing perceptual optimization by coarsely quantizing unimportant regions, while finely quantizing important regions within a frame. The intelligent differential quantization uses motion information gathered from encoding and analysis of the video to classify the importance of different regions of the image, and quantizes the regions accordingly. In addition, the intelligent differential quantization include efficient signaling of information as to the differential quantization strengths in the compressed bit stream.
摘要翻译： 通过智能差分量化，视频编解码器在帧内以不同的强度水平智能量化视频，例如在宏块（MB）或一组基于MB的基础上。 这允许编解码器以比帧更精细的粒度来控制比特使用以满足硬件约束，以及通过粗略量化不重要区域来提供感知优化，同时精细量化帧内的重要区域。 智能差分量化使用从视频的编码和分析中收集的运动信息来分类图像的不同区域的重要性，并且相应地量化该区域。 此外，智能差分量化包括关于压缩比特流中的差分量化强度的信息的有效信令。
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