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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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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:US09313501B2
公开(公告)日:2016-04-12
申请号:US13614453
申请日:2012-09-13
IPC分类号: H04N19/164 , H04N19/89 , H04N19/172 , H04N19/46 , H04N19/61 , H04N19/103 , H04N19/166 , H04N19/573 , H04N19/169
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.
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公开(公告)号:US08634413B2
公开(公告)日:2014-01-21
申请号:US11027294
申请日:2004-12-30
IPC分类号: H04L12/26
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:US08116380B2
公开(公告)日:2012-02-14
申请号:US10934117
申请日:2004-09-04
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)。
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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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公开(公告)号:US08625680B2
公开(公告)日:2014-01-07
申请号:US10680072
申请日:2003-10-06
申请人: Sridhar Srinivasan , Chih-Lung Lin , Pohsiang Hsu , Thomas W. Holcomb , Ming-Chieh Lee , Jordi Ribas-Corbera
发明人: Sridhar Srinivasan , Chih-Lung Lin , Pohsiang Hsu , Thomas W. 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,针对帧内的序列,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:US07120197B2
公开(公告)日:2006-10-10
申请号:US10322383
申请日:2002-12-17
申请人: Chih-Lung Lin , Pohsiang Hsu , Thomas W. Holcomb , Ming-Chieh Lee
发明人: Chih-Lung Lin , Pohsiang Hsu , Thomas W. Holcomb , Ming-Chieh Lee
IPC分类号: H04N7/12
CPC分类号: H04N19/523 , G06T3/40 , G06T7/0012 , H04N19/105 , H04N19/115 , H04N19/117 , H04N19/119 , H04N19/122 , H04N19/124 , H04N19/129 , H04N19/132 , H04N19/136 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/15 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/46 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/527 , H04N19/533 , H04N19/547 , H04N19/57 , H04N19/59 , H04N19/593 , H04N19/61 , H04N19/625 , H04N19/63 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/86 , H04N19/895
摘要: Techniques and tools for processing reference frames in a motion estimation/compensation loop or motion compensation loop are described. For example, a video encoder or decoder filters reference frames to reduce discontinuities at block boundaries, improving the efficiency of motion estimation and compensation.
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公开(公告)号:US07924921B2
公开(公告)日:2011-04-12
申请号:US10989845
申请日:2004-11-15
申请人: Regis J. Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy E. Onders , Thomas W. Holcomb
发明人: Regis J. Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy E. Onders , Thomas W. Holcomb
CPC分类号: H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).
摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。
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公开(公告)号:US08155195B2
公开(公告)日:2012-04-10
申请号:US11400049
申请日:2006-04-07
CPC分类号: H04N19/567
摘要: Techniques and tools for switching distortion metrics during motion estimation are described. For example, a video encoder determines a distortion metric selection criterion for motion estimation. The criterion can be based on initial results of the motion estimation. To evaluate the criterion, the encoder can compare the criterion to a threshold that depends on a current quantization parameter. The encoder selects between multiple available distortion metrics, which can include a sample-domain distortion metric (e.g., SAD) and a transform-domain distortion metric (e.g., SAHD). The encoder uses the selected distortion metric in the motion estimation. Selectively switching between SAD and SAHD provides rate-distortion performance superior to using only SAD or only SAHD. Moreover, due to the lower complexity of SAD, the computational complexity of motion estimation with SAD-SAHD switching is typically less than motion estimation that always uses SAHD.
摘要翻译: 描述了在运动估计期间切换失真度量的技术和工具。 例如,视频编码器确定用于运动估计的失真度量选择标准。 该标准可以基于运动估计的初始结果。 为了评估标准,编码器可以将标准与取决于当前量化参数的阈值进行比较。 编码器在可以包括采样域失真度量(例如SAD)和变换域失真度量(例如,SAHD)的多个可用失真度量之间进行选择。 编码器在运动估计中使用所选择的失真度量。 选择性地切换SAD和SAHD之间的速率失真性能优于仅使用SAD或仅SAHD。 此外,由于SAD的较低的复杂度,SAD-SAHD切换的运动估计的计算复杂度通常小于始终使用SAHD的运动估计。
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