Method and apparatus for video signal processing
    1.
    发明授权
    Method and apparatus for video signal processing 有权
    视频信号处理方法和装置

    公开(公告)号:US08111757B2

    公开(公告)日:2012-02-07

    申请号:US11863526

    申请日:2007-09-28

    摘要: A first video signal processor (103) receives a first encoded video signal from which a video unit (201) generates a second encoded video signal, where the second encoded video signal is a reduced data rate version of the first encoded video signal. An error encoder (203) generates error redundancy data for the second encoded video signal and a multiplexer (207) generates output video data comprising the first encoded video signal and the error correcting data but not comprising the second encoded video signal. A second video processor (105) receives the output video data and a video unit (303) regenerates the second video signal from the first video signal. An error unit (305) detects errors for at least a first segment of the second video signal in response to the error redundancy data. A combiner (307) then generates combined video data by combining corresponding segments of the first encoded video signal and the second encoded video signal.

    摘要翻译: 第一视频信号处理器(103)接收视频单元(201)产生第二编码视频信号的第一编码视频信号,其中第二编码视频信号是第一编码视频信号的缩减数据速率版本。 错误编码器(203)产生用于第二编码视频信号的错误冗余数据,并且多路复用器(207)产生包括第一编码视频信号和纠错数据但不包括第二编码视频信号的输出视频数据。 第二视频处理器(105)接收输出视频数据,视频单元(303)从第一视频信号再生第二视频信号。 错误单元(305)响应于错误冗余数据来检测第二视频信号的至少第一段的错误。 组合器(307)然后通过组合第一编码视频信号和第二编码视频信号的对应段来产生组合视频数据。

    MACROBLOCK LEVEL NO-REFERENCE OBJECTIVE QUALITY ESTIMATION OF VIDEO
    2.
    发明申请
    MACROBLOCK LEVEL NO-REFERENCE OBJECTIVE QUALITY ESTIMATION OF VIDEO 审中-公开
    宏观水平视频的参考目标质量评估

    公开(公告)号:US20100316131A1

    公开(公告)日:2010-12-16

    申请号:US12814656

    申请日:2010-06-14

    IPC分类号: H04N7/24

    摘要: A no-reference estimation of video quality in streaming video is provided on a macroblock basis. Compressed video is being deployed in video in streaming and transmission applications. MB-level no-reference objective quality estimation is provided based on machine learning techniques. First the feature vectors are extracted from both the MPEG coded bitstream and the reconstructed video. Various feature extraction scenarios are proposed based on bitstream information, MB prediction error, prediction source and reconstruction intensity. The features are then modeled using both a reduced model polynomial network and a Bayes classifier. The classified features may be used as feature vector used by a client device assess the quality of received video without use of the original video as a reference.

    摘要翻译: 在宏块的基础上提供流视频中的视频质量的非参考估计。 压缩视频正在部署在流媒体和传输应用中的视频中。 基于机器学习技术提供了MB级别的非参考目标质量估计。 首先,从MPEG编码的比特流和重构的视频中提取特征向量。 基于比特流信息,MB预测误差,预测源和重建强度提出了各种特征提取方案。 然后使用缩减模型多项式网络和贝叶斯分类器对特征进行建模。 分类特征可以被用作由客户端设备使用的特征向量来评估所接收视频的质量,而不使用原始视频作为参考。

    Method and apparatus for encoding and decoding video using redundant encoding and decoding techniques
    3.
    发明授权
    Method and apparatus for encoding and decoding video using redundant encoding and decoding techniques 有权
    使用冗余编码和解码技术对视频进行编码和解码的方法和装置

    公开(公告)号:US08249142B2

    公开(公告)日:2012-08-21

    申请号:US12108680

    申请日:2008-04-24

    IPC分类号: H04N7/12

    摘要: A method and apparatus for encoding and decoding video performs transformation of at least a portion of a high-resolution video frame into a low resolution image and a plurality of enhancement data sets, encodes the low resolution image as a primary coded picture in a bitstream format and encodes each of the plurality of enhancement data sets as a different redundant coded picture in the bitstream format. For decoding, a decoded low resolution image and a plurality of decoded enhancement data sets are generated and an inverse transform is performed to construct a decoded high-resolution image. The primary coded picture and a redundant coded picture may be formatted according to the ITU-T H.264 Advanced Coding specification. The transform may be a polyphase or a sub-band transform.

    摘要翻译: 用于编码和解码视频的方法和装置执行将高分辨率视频帧的至少一部分变换为低分辨率图像和多个增强数据集,将低分辨率图像编码为比特流格式的主编码图像 并且将多个增强数据集中的每一个编码为比特流格式的不同的冗余编码图像。 为了解码,生成解码的低分辨率图像和多个解码的增强数据组,并且执行逆变换以构造解码的高分辨率图像。 主编码图像和冗余编码图像可以根据ITU-T H.264高级编码规范进行格式化。 该变换可以是多相或子带变换。

    METHOD AND APPARATUS FOR VIDEO SIGNAL PROCESSING
    4.
    发明申请
    METHOD AND APPARATUS FOR VIDEO SIGNAL PROCESSING 有权
    用于视频信号处理的方法和装置

    公开(公告)号:US20090086826A1

    公开(公告)日:2009-04-02

    申请号:US11863526

    申请日:2007-09-28

    IPC分类号: H04N7/66

    摘要: A first video signal processor (103) receives a first encoded video signal from which a video unit (201) generates a second encoded video signal, where the second encoded video signal is a reduced data rate version of the first encoded video signal. An error encoder (203) generates error redundancy data for the second encoded video signal and a multiplexer (207) generates output video data comprising the first encoded video signal and the error correcting data but not comprising the second encoded video signal. A second video processor (105) receives the output video data and a video unit (303) regenerates the second video signal from the first video signal. An error unit (305) detects errors for at least a first segment of the second video signal in response to the error redundancy data. A combiner (307) then generates combined video data by combining corresponding segments of the first encoded video signal and the second encoded video signal.

    摘要翻译: 第一视频信号处理器(103)接收视频单元(201)产生第二编码视频信号的第一编码视频信号,其中第二编码视频信号是第一编码视频信号的缩减数据速率版本。 错误编码器(203)产生用于第二编码视频信号的错误冗余数据,并且多路复用器(207)产生包括第一编码视频信号和纠错数据但不包括第二编码视频信号的输出视频数据。 第二视频处理器(105)接收输出视频数据,视频单元(303)从第一视频信号再生第二视频信号。 错误单元(305)响应于错误冗余数据来检测第二视频信号的至少第一段的错误。 组合器(307)然后通过组合第一编码视频信号和第二编码视频信号的对应段来产生组合视频数据。

    METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO
    5.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO 有权
    编码和解码视频的方法和装置

    公开(公告)号:US20090268805A1

    公开(公告)日:2009-10-29

    申请号:US12108680

    申请日:2008-04-24

    IPC分类号: H04N7/26

    摘要: A method and apparatus for encoding and decoding video performs transformation of at least a portion of a high-resolution video frame into a low resolution image and a plurality of enhancement data sets, encodes the low resolution image as a primary coded picture in a bitstream format and encodes each of the plurality of enhancement data sets as a different redundant coded picture in the bitstream format. For decoding, a decoded low resolution image and a plurality of decoded enhancement data sets are generated and an inverse transform is performed to construct a decoded high-resolution mage. The primary coded picture and a redundant coded picture may be formatted according to the ITU-T H.264 Advanced Coding specification. The transform may be a polyphase or a sub-band transform.

    摘要翻译: 用于编码和解码视频的方法和装置执行将高分辨率视频帧的至少一部分变换为低分辨率图像和多个增强数据集,将低分辨率图像编码为比特流格式的主编码图像 并且将多个增强数据集中的每一个编码为比特流格式的不同的冗余编码图像。 为了解码,生成解码的低分辨率图像和多个解码的增强数据集,并且执行逆变换以构造解码的高分辨率法师。 主编码图像和冗余编码图像可以根据ITU-T H.264高级编码规范进行格式化。 该变换可以是多相或子带变换。

    Scalable video transmission
    6.
    发明申请
    Scalable video transmission 审中-公开
    可扩展视频传输

    公开(公告)号:US20050163211A1

    公开(公告)日:2005-07-28

    申请号:US10506344

    申请日:2003-02-18

    申请人: Tamer Shanableh

    发明人: Tamer Shanableh

    IPC分类号: H03M7/30 H04N19/895 H04N7/12

    摘要: A method (800) for improving a quality of a scalable video object plane enhancement layer transmission over an error-prone network. The enhancement layer transmission includes at least one re-synchronisation marker followed by a Video Packet Header and header extensions. A reference VOPs' identifier (e.g. ‘ref_select_code’) is replicated from the video object plane header into a number of enhancement layer header extensions (715). An error corrupting the reference VOPs' identifier is recovered (830, 840, 850, 860) by decoding a correct reference VOP's identifier from subsequent enhancement layer header extensions. Correct reference video object planes are identified (870, 880) to be used in a reconstruction of an enhancement layer video object plane in the scalable video transmission. This improves the error performance in an enhancement layer of video transmissions over wireless channels and the Internet where the errors can be severe.

    摘要翻译: 一种用于在容易出错的网络上改善可伸缩视频对象平面增强层传输的质量的方法(800)。 增强层传输包括至少一个重新同步标记,后面跟着视频分组报头和报头扩展。 将参考VOP的标识符(例如“ref_select_code”)从视频对象平面标题复制到多个增强层标题扩展(715)中。 通过从后续增强层标题扩展中解码正确的参考VOP标识符来恢复损坏参考VOP标识符的错误(830,840,850,860)。 识别正确的参考视频对象平面(870,880)以用于可伸缩视频传输中的增强层视频对象平面的重构。 这改善了通过无线信道和互联网的视频传输的增强层中的错误性能,其中错误可能是严重的。