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    • 24. 发明申请
    • ACCELERATION INTERFACE FOR VIDEO DECODING
    • 视频解码加速接口
    • WO2017039883A1
    • 2017-03-09
    • PCT/US2016/044148
    • 2016-07-27
    • MICROSOFT TECHNOLOGY LICENSING, LLC
    • WU, YongjunSADHWANI, ShyamMAHFOODH, Abo Talib
    • H04N19/42H04N19/46H04N19/61H04N19/70
    • H04N19/33H04N19/119H04N19/124H04N19/172H04N19/42H04N19/43H04N19/46H04N19/61H04N19/70H04N19/91
    • A host decoder and accelerator communicate across an acceleration interface. The host decoder receives at least part of a bitstream for video, and it manages certain decoding operations of the accelerator across the acceleration interface. The accelerator receives data from the host decoder across the acceleration interface, then performs decoding operations. For a given frame, settings based on an uncompressed frame header can be transferred in a different buffer of the acceleration interface than a compressed frame header and compressed frame data. Among other features, the host decoder can assign settings used by the accelerator that override values of bitstream syntax elements, can assign surface index values used by the accelerator to update reference frame buffers, and can handle skipped frames without invoking the accelerator. Among other features, the accelerator can use surface index values to update reference frame buffers, and can handle changes in spatial resolution at non-key frames.
    • 主机解码器和加速器通过加速接口进行通信。 主机解码器接收用于视频的比特流的至少一部分,并且它管理加速器界面上的加速器的某些解码操作。 加速器通过加速接口从主机解码器接收数据,然后执行解码操作。 对于给定的帧,基于未压缩帧头的设置可以在加速接口的不同缓冲器中被传送到压缩帧头和压缩帧数据。 在其他特征中,主机解码器可以分配由加速器使用的设置,其覆盖比特流语法元素的值,可以分配加速器使用的表面索引值来更新参考帧缓冲器,并且可以处理跳过的帧而不调用加速器。 在其他特征中,加速器可以使用表面索引值来更新参考帧缓冲器,并且可以处理非关键帧处的空间分辨率的变化。
    • 25. 发明申请
    • SYSTEM FOR CODING HIGH DYNAMIC RANGE AND WIDE COLOR GAMUT SEQUENCES
    • 用于编码高动态范围和宽彩色游戏序列的系统
    • WO2017015564A1
    • 2017-01-26
    • PCT/US2016/043571
    • 2016-07-22
    • ARRIS ENTERPRISES LLC
    • MINOO, KoohyarGU, ZhouyeBAYLON, David M.LUTHRA, Ajay
    • H04N19/172H04N19/46H04N19/117H04N19/136H04N19/36
    • H04N19/124H04N19/117H04N19/136H04N19/172H04N19/174H04N19/179H04N19/182H04N19/186H04N19/36H04N19/46
    • A method of encoding a digital video data applies adaptive pre-processing to data representing high dynamic range (HDR) and/or wide color gamut (WCG) image data prior to encoding and complementary post-processing to the data after decoding in order to allow at least partial reproduction of the HDR and/or WCG data. The example methods apply one or more color space conversions, and a perceptual transfer functions to the data prior to quantization. The example methods apply inverse perceptual transfer functions and inverse color space conversions after decoding to recover the HDR and/or WCG data. The transfer functions are adaptive so that different transfer functions may be applied to video data sets including different groups of frames, frames or processing windows in a single frame. Information on the data set and information on the applied transfer function is passed as metadata from the encoder to the decoder.
    • 对数字视频数据进行编码的方法对编码之后的高动态范围(HDR)和/或宽色域(WCG)图像数据的数据应用自适应预处理,以便在解码之后对数据进行补充后处理,以便允许 至少部分再现HDR和/或WCG数据。 示例性方法应用一个或多个颜色空间转换,并且在量化之前将感知传递函数应用于数据。 示例性方法在解码之后应用反向感知传递函数和反色彩空间转换以恢复HDR和/或WCG数据。 传递函数是自适应的,使得不同的传递函数可以应用于包括单个帧中的不同组帧,帧或处理窗口的视频数据集。 关于数据集的信息和应用传递函数的信息作为元数据从编码器传递到解码器。
    • 29. 发明申请
    • MOTION VECTOR SELECTION AND PREDICTION IN VIDEO CODING SYSTEMS AND METHODS
    • 视频编码系统中的运动矢量选择和预测及方法
    • WO2016154930A1
    • 2016-10-06
    • PCT/CN2015/075599
    • 2015-03-31
    • REALNETWORKS, INC.TSAI, Chia-Yang
    • KUANG, KyleLIU, Xiaobo
    • H04N19/10
    • H04N19/52H04N19/132H04N19/159H04N19/176H04N19/46
    • An unencoded video frame of a sequence of video frames is encoded to generate an encoded bit-stream representative of the unencoded video frame. The encoded bit-stream includes a header portion and a video data payload portion. The unencoded video frame may be divided into an array of prediction blocks, including a first prediction block. A coding mode is selected from a plurality of coding modes for use in encoding the first prediction block. The first prediction block is encoded using the selected coding mode to generate a portion of the video data payload of the encoded bit-stream. A coding mode selection flag is provided in the header portion of the encoded bit-stream, which indicates which coding mode of the plurality of coding modes was selected for encoding the first prediction block.
    • 对视频帧序列的未编码视频帧进行编码以产生代表未编码视频帧的编码比特流。 编码比特流包括报头部分和视频数据有效载荷部分。 未经编码的视频帧可以被划分为包括第一预测块的预测块阵列。 从用于编码第一预测块的多个编码模式中选择编码模式。 使用所选择的编码模式对第一预测块进行编码,以生成编码比特流的视频数据有效载荷的一部分。 编码模式选择标志被提供在编码比特流的标题部分中,其指示选择多个编码模式的编码模式以对第一预测块进行编码。