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    • 2. 发明授权
    • Video insertion information insertion in a compressed bitstream
    • 在压缩比特流中插入视频插入信息
    • US08681874B2
    • 2014-03-25
    • US12047996
    • 2008-03-13
    • Gary Fujen ChengWen-Hsiung ChenMichael Pereira
    • Gary Fujen ChengWen-Hsiung ChenMichael Pereira
    • H04N7/12
    • H04N19/48G06Q30/02H04N21/2343H04N21/235H04N21/435
    • Particular embodiments generally relate to video insertion information insertion in a compressed bitstream. In one embodiment, a compressed bitstream of data is received. Video insertion information to be added to the bitstream is then determined. One or more macroblocks out of a plurality of macroblocks are determined in the compressed bitstream. The macroblocks are determined in the compressed domain and not the spatial domain. Information is selectively inserted for the video insertion information for the determined one or more macroblocks in the compressed bitstream. For example, encoded macroblocks for the video insertion information may replace the determined one or more macroblocks. Also, the one or more macroblocks may be decoded and information for the video insertion information is added to the decoded one or more macroblocks, and then the one or more macroblocks are re-encoded with the information. The re-encoded macroblocks may then replace the determined one or more macroblocks in the compressed bitstream.
    • 具体实施例通常涉及在压缩比特流中插入视频插入信息。 在一个实施例中,接收压缩的数据比特流。 然后确定要添加到比特流的视频插入信息。 在压缩比特流中确定多个宏块中的一个或多个宏块。 在压缩域中确定宏块,而不是空间域。 针对所确定的压缩比特流中的一个或多个宏块的视频插入信息选择性地插入信息。 例如,用于视频插入信息的编码宏块可以替代所确定的一个或多个宏块。 此外,一个或多个宏块可以被解码,并且用于视频插入信息的信息被添加到解码的一个或多个宏块,然后一个或多个宏块被重新编码。 再编码的宏块然后可以替换所确定的压缩比特流中的一个或多个宏块。
    • 7. 发明授权
    • Methods and systems to reduce channel selection transition delay in a digital network
    • 降低数字网络中信道选择转换延迟的方法和系统
    • US08245264B2
    • 2012-08-14
    • US11442500
    • 2006-05-26
    • John ToebesWen-Hsiung ChenJack ChamPing Li
    • John ToebesWen-Hsiung ChenJack ChamPing Li
    • H04N7/173
    • H04N7/163H04N21/2389H04N21/4384H04N21/4385H04N21/64322H04N21/64784H04N21/6581
    • A method of reducing the channel selection transition delay from a first media data channel to a second media data channel includes the operations of accumulating an independent media data frame and any related dependent media data frames based on a first decoder decoding at least a first portion of a second channel to form a second channel current media state, receiving a channel change request from a second decoder to change decoding to the second media channel, identifying an insertion position for a current independent frame relative to a current second channel frame set, and generating the current independent frame based on the second channel current media state corresponding to the insertion position. The dependent media data frames are used to modify the second channel current media state based on the independent media data frame.
    • 减少从第一媒体数据信道到第二媒体数据信道的信道选择转换延迟的方法包括:基于第一解码器对至少第一部分的第一部分进行解码的累加独立媒体数据帧和任何相关的相关媒体数据帧的操作 形成第二信道当前媒体状态的第二信道,从第二解码器接收信道改变请求以将解码改变为第二媒体信道,识别当前独立帧相对于当前第二信道帧集合的插入位置,以及生成 基于与插入位置对应的第二通道当前媒体状态的当前独立帧。 依赖媒体数据帧用于基于独立媒体数据帧来修改第二信道当前媒体状态。
    • 8. 发明授权
    • Per multi-block partition breakpoint determining for hybrid variable length coding
    • 每个多块分区断点确定混合变长编码
    • US08126062B2
    • 2012-02-28
    • US11686860
    • 2007-03-15
    • Dihong TianWen-hsiung ChenPi Sheng ChangJohn A. Toebes
    • Dihong TianWen-hsiung ChenPi Sheng ChangJohn A. Toebes
    • H04N7/12
    • H04N19/18H04N19/13H04N19/132H04N19/157
    • A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code a plurality of ordered sequences of quantized transform coefficients of a corresponding plurality of blocks of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low frequency region and a high frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The plurality of blocks include adjacent blocks and form a multi-block partition. The breakpoint location is determined as a function of the sequences of the multi-block partition such that different multi-block partitions can have different breakpoints.
    • 在一个或多个计算机可读有形介质中编码的方法和装置以及逻辑,以执行方法。 该方法是使用包括确定低频区域和高频区域之间的序列中的断点位置的混合编码方法来编码对应的多个图像数据块的多个有序序列的量化变换系数; 使用选择的低频可变长度编码方法对低频区域进行编码; 使用选择的高频可变长度编码方法对高频区域进行编码; 并编码断点的位置。 多个块包括相邻块并形成多块分区。 断点位置被确定为多块分区的序列的函数,使得不同的多块分区可以具有不同的断点。
    • 9. 发明授权
    • Real-time face detection using temporal differences
    • 使用时间差异的实时脸部检测
    • US08086076B2
    • 2011-12-27
    • US12031590
    • 2008-02-14
    • Dihong TianJoseph T. FrielJ. William MauchlyWen-hsiung Chen
    • Dihong TianJoseph T. FrielJ. William MauchlyWen-hsiung Chen
    • G06K9/54H04N7/12G06K9/36
    • G06T9/001G06K9/00234G06K9/00986G06T9/20H04N19/124H04N19/136H04N19/137H04N19/14H04N19/17H04N19/176H04N19/186H04N19/436H04N19/503
    • An apparatus, a method, and a computer-readable medium having instructions encoded thereon that when executed cause a method to be carried out. The method includes dividing at least a portion of a picture of a video stream into parts of blocks, and processing the parts in parallel by a plurality of interconnected processors. The processing of a respective part by its respective processor includes determining block-level temporal difference features. Each processor also performs coding functions on its respective part of the picture. The method also includes block-level processing using the block-level temporal difference features to determine which blocks in the picture are likely to be that of a face, the block-level processing being at the granularity of at least a block. In one version, the processing in each processor includes edge detection and color segmentation to determine block-level edge features including block-level color-segmented edge features that are then used in the block level processing.
    • 一种装置,方法和计算机可读介质,其具有在其上编码的指令,当执行时,导致执行方法。 该方法包括将视频流的图像的至少一部分划分为块的部分,以及由多个互连的处理器并行处理这些部分。 通过其相应处理器对相应部分的处理包括确定块级时间差特征。 每个处理器还对其图像的相应部分执行编码功能。 该方法还包括使用块级时间差特征的块级处理,以确定图片中哪些块可能是面的块,块级处理至少是至少一个块的粒度。 在一个版本中,每个处理器中的处理包括边缘检测和颜色分割,以确定块级边缘特征,包括块级颜色分割的边缘特征,然后在块级处理中使用。