SCALABLE VIDEO CODING SYSTEM WITH PARAMETER SIGNALING
    72.
    发明申请
    SCALABLE VIDEO CODING SYSTEM WITH PARAMETER SIGNALING 审中-公开
    具有参数信号的可扩展视频编码系统

    公开(公告)号:US20160316215A1

    公开(公告)日:2016-10-27

    申请号:US15135500

    申请日:2016-04-21

    摘要: A method is provided for encoding a digital video to provide for improved color mapping. The digital video has values in a first color space, and the method includes performing a color mapping operation on values in each sub-picture to convert the values in the first color space to values in a second, narrower, color space, wherein the color mapping operation is adapted based on the content of each sub-picture, encoding the values in the second color space into a base layer, performing a reverse color mapping operation on decoded values from the base layer in the second color space in each sub-picture to generate a reconstructed reference frame having values in the first color space, encoding values in the first color space into an enhancement layer based at least in part on the reconstructed reference frame, combining the base layer and the enhancement layer into a bitstream, sending the bitstream to a decoder, and sending one or more parameters to the decoder that describe the adaption of the reverse color mapping operation for at least some sub-pictures.

    摘要翻译: 提供了一种用于对数字视频进行编码以提供改进的颜色映射的方法。 数字视频具有第一颜色空间中的值,并且该方法包括对每个子图像中的值执行颜色映射操作,以将第一颜色空间中的值转换为第二,较窄的颜色空间中的值,其中颜色 基于每个子图像的内容,将第二颜色空间中的值编码为基本层,对每个子图像中的第二颜色空间中的基底层的解码值执行反色映射操作, 以产生具有第一颜色空间中的值的重建参考帧,至少部分地基于重构的参考帧将第一颜色空间中的值编码为增强层,将基本层和增强层组合成比特流,发送 比特流到解码器,并且向解码器发送描述对于至少一些子图像的反向颜色映射操作的适配的一个或多个参数。

    ADAPTIVE PERCEPTUAL MAPPING AND SIGNALING FOR VIDEO CODING
    73.
    发明申请
    ADAPTIVE PERCEPTUAL MAPPING AND SIGNALING FOR VIDEO CODING 审中-公开
    用于视频编码的自适应识别映射和信号

    公开(公告)号:US20160316207A1

    公开(公告)日:2016-10-27

    申请号:US15135497

    申请日:2016-04-21

    摘要: A method is provided for encoding a digital video to improve perceptual quality. The method includes receiving a digital video at a video encoder, providing a perceptual quantizer function defined by PQ  ( L ) = ( c 1 + c 2  L m 1 1 + c 3  L m 1 ) m 2 , wherein L is a luminance value, c1, c2, c3, and m1 are parameters with fixed values, and m2 is a parameter with a variable value, adapting the perceptual quantizer function by adjusting the value of the m2 parameter based on different luminance value ranges found within a coding level of the digital video, encoding the digital video into a bitstream using, in part, the perceptual quantizer function, transmitting the bitstream to a decoder, and transmitting the value of the m2 parameter to the decoder for each luminance value range in the coding level.

    摘要翻译: 其中L是亮度值,c1,c2,c3和m1是具有固定值的参数,m2是具有可变值的参数,通过基于不同亮度值范围调整m2参数的值来适应感知量化器功能 在数字视频的编码级中发现,使用部分感知量化器功能将数字视频编码为比特流,将比特流发送到解码器,并且将每个亮度值范围的m2参数的值发送到解码器 在编码层面。