Method and apparatus for encoding high dynamic range video
    5.
    发明授权
    Method and apparatus for encoding high dynamic range video 失效
    用于编码高动态范围视频的方法和装置

    公开(公告)号:US07483486B2

    公开(公告)日:2009-01-27

    申请号:US10884178

    申请日:2004-07-02

    IPC分类号: H04B1/66 G06K9/36

    摘要: A method and apparatus for encoding high dynamic range video by means of video compression is shown. The method comprises the steps of providing high dynamic range (HDR) tristimulus color data (XYZ) for each frame of the video and threshold versus intensity data for a human observer; constructing a perceptually conservative luminance transformation from continuous luminance data (Y) to discrete values (Lp) using said threshold versus intensity data for the human observer; transforming the HDR tristimulus color data into perceptually linear color data of three color channels (Lp, u′, v′) for obtaining visually lossless compressed frames; estimating motion vector of said consecutive frames of the video and compensating the difference of the tristimulus color data for performing an inter-frame encoding and an inter-frame compression; transforming the compensated differences of the tristimulus color data to frequency space data; quantizing said frequency space data; variable-length encoding of the quantized frequency space data and storing or transmitting a stream of visual data resulting from the encoded quantized frequency space data.

    摘要翻译: 示出了通过视频压缩对高动态范围视频进行编码的方法和装置。 该方法包括以下步骤:针对人类观察者的每个视频帧和阈值对强度数据提供高动态范围(HDR)三刺激色彩数据(XYZ); 使用所述用于人类观察者的阈值对强度数据,从连续亮度数据(Y)到离散值(Lp)构建感知保守的亮度变换; 将HDR三刺激色彩数据变换成三色通道(Lp,u',v')的感知线性颜色数据,以获得视觉无损压缩帧; 估计所述视频的连续帧的运动矢量,并补偿用于执行帧间编码和帧间压缩的三刺激色数据的差; 将三刺激色彩数据的补偿差异转换为频率空间数据; 量化所述频率空间数据; 量化频率空间数据的可变长度编码,并且存储或发送由编码的量化频率空间数据产生的可视数据流。

    Method and apparatus for encoding high dynamic range video
    6.
    发明申请
    Method and apparatus for encoding high dynamic range video 失效
    用于编码高动态范围视频的方法和装置

    公开(公告)号:US20060002611A1

    公开(公告)日:2006-01-05

    申请号:US10884178

    申请日:2004-07-02

    IPC分类号: G06K9/36

    摘要: A method and apparatus for encoding high dynamic range video by means of video compression is shown. The method comprises the steps of providing high dynamic range (HDR) tristimulus color data (XYZ) for each frame of the video and threshold versus intensity data for a human observer; constructing a perceptually conservative luminance transformation from continuous luminance data (Y) to discrete values (Lp) using said threshold versus intensity data for the human observer; transforming the HDR tristimulus color data into perceptually linear color data of three color channels (Lp, u′, v′) for obtaining visually lossless compressed frames; estimating motion vector of said consecutive frames of the video and compensating the difference of the tristimulus color data for performing an inter-frame encoding and an inter-frame compression; transforming the compensated differences of the tristimulus color data to frequency space data; quantizing said frequency space data; variable-length encoding of the quantized frequency space data and storing or transmitting a stream of visual data resulting from the encoded quantized frequency space data;

    摘要翻译: 示出了通过视频压缩对高动态范围视频进行编码的方法和装置。 该方法包括以下步骤:针对人类观察者的每个视频帧和阈值对强度数据提供高动态范围(HDR)三刺激色彩数据(XYZ); 使用所述用于人类观察者的阈值对强度数据,从连续亮度数据(Y)构建到离散值(L >P )的感知保守亮度变换; 将HDR三刺激色彩数据变换成三个色彩通道(L> p,u',v')的感知线性颜色数据,以获得视觉无损压缩帧; 估计所述视频的连续帧的运动矢量,并补偿用于执行帧间编码和帧间压缩的三刺激色数据的差; 将三刺激色彩数据的补偿差异转换为频率空间数据; 量化所述频率空间数据; 量化频率空间数据的可变长度编码,并且存储或发送由编码的量化频率空间数据产生的可视数据流;