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    • 2. 发明申请
    • DEVICE AND METHODS FOR SCANNING RECTANGULAR-SHAPED TRANSFORMS IN VIDEO CODING
    • 用于在视频编码中扫描矩形变换的装置和方法
    • US20130028329A1
    • 2013-01-31
    • US13556044
    • 2012-07-23
    • Jian LouJae Hoon KimLimin Wang
    • Jian LouJae Hoon KimLimin Wang
    • H04N7/30
    • H04N19/436H04N19/122H04N19/129H04N19/157H04N19/176H04N19/18H04N19/61
    • Devices and methods that allow for applying a wavefront scan to rectangular transform blocks are described herein. Such devices and methods may allow greater efficiencies for entropy coding by enabling parallel processing of transform coefficients. In some embodiments, a method for coding a digital video sequence having a plurality of pictures includes dividing at least one of the plurality of pictures into blocks, performing a rectangular transform on at least one of said blocks to produce one or more transform coefficients, performing quantization on the one or more transform coefficients, and encoding the one or more transform coefficients, one at a time, along a coding scan order, to generate a compressed bitstream. The coding scan order may include a forward wavefront scan order or a reverse wavefront scan order and the quantization may result in producing quantized transform coefficients.
    • 这里描述允许将波前扫描应用于矩形变换块的装置和方法。 这样的设备和方法可以通过实现变换系数的并行处理来为熵编码提供更大的效率。 在一些实施例中,一种用于编码具有多个图像的数字视频序列的方法包括将所述多个图像中的至少一个划分成块,对所述块中的至少一个执行矩形变换以产生一个或多个变换系数,执行 对一个或多个变换系数进行量化,并且沿着编码扫描顺序一次一个地编码一个或多个变换系数,以生成压缩比特流。 编码扫描顺序可以包括正向波前扫描顺序或反向波前扫描顺序,并且量化可以导致产生量化的变换系数。
    • 3. 发明申请
    • QUANTIZATION PARAMETER DERIVATION FROM QP PREDICTOR
    • 量子参数从QP PREDICTOR衍生
    • US20130022108A1
    • 2013-01-24
    • US13540157
    • 2012-07-02
    • Krit PanusoponeAjay K. LuthraLimin WangXue FangJae Hoon Kim
    • Krit PanusoponeAjay K. LuthraLimin WangXue FangJae Hoon Kim
    • H04N7/32
    • H04N19/17H04N19/124H04N19/136H04N19/159H04N19/463
    • A method for determining quantization parameters is provided. The method includes determining one or more first units of video content in a grouping of units and analyzing whether the one or more first units of video content within a region in the grouping of units have coefficients for the video content that are zero. The method then determines whether a quantization parameter for one or more second units of video content different from the one or more first units of video content is to be used to derive the quantization parameter for the one or more first units of video content. When the quantization parameter for the one or more second units of video content is to be used, the quantization parameter for the one or more first units of video content is derived from the quantization parameter for the one or more second units of video content.
    • 提供了一种用于确定量化参数的方法。 该方法包括确定单元分组中的一个或多个视频内容的第一单元,并且分析单元分组内的区域内的视频内容的一个或多个第一单元是否具有为零的视频内容的系数。 该方法然后确定用于与视频内容的一个或多个第一单元不同的视频内容的一个或多个第二单元的量化参数是否将用于导出用于视频内容的一个或多个第一单元的量化参数。 当要使用视频内容的一个或多个第二单元的量化参数时,从视频内容的一个或多个第二单元的量化参数导出视频内容的一个或多个第一单元的量化参数。
    • 4. 发明申请
    • Depth Coding as an Additional Channel to Video Sequence
    • 深度编码作为视频序列的附加通道
    • US20110122225A1
    • 2011-05-26
    • US12952781
    • 2010-11-23
    • Jae Hoon KimLimin Wang
    • Jae Hoon KimLimin Wang
    • H04N13/00
    • H04N19/597H04N2213/003
    • A 3D video coding apparatus and method which selectively codes video data from a plurality of video sources to include depth information. Coding may be performed by combining depth information with view information, such as RGB, YCrCb, or YUV, and coded together with the view information as, RGBD, YCrCbD or YUVD. An apparatus may selectively code the depth information based on a depth format flag to include no depth information (e.g. a 2D format) or include depth information as a chroma channel. The depth information may be coded separately or together with YCrCb based on a coding cost or rate distortion estimate to encode the video information to obtain the highest quality.
    • 一种3D视频编码装置和方法,其选择性地对来自多个视频源的视频数据进行编码以包括深度信息。 编码可以通过将深度信息与诸如RGB,YCrCb或YUV之类的视图信息组合,并与视图信息一起编码,如RGBD,YCrCbD或YUVD来执行。 设备可以基于深度格式标志选择性地编码深度信息,以不包括深度信息(例如,2D格式)或者包括深度信息作为色度通道。 深度信息可以基于编码成本或速率失真估计单独地或与YCrCb一起编码以对视频信息进行编码以获得最高质量。