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    Joint base layer and enhancement layer quantizer adaptation in EDR video coding
    4.
    发明授权
    Joint base layer and enhancement layer quantizer adaptation in EDR video coding 有权
    EDR视频编码中的联合基层和增强层量化器适应

    公开(公告)号：US09219916B2

    公开(公告)日：2015-12-22

    申请号：US13908926

    申请日：2013-06-03

    申请人： Dolby Laboratories Licensing Corporation

    发明人： Guan-Ming Su ,  Qian Chen ,  Hubert Koepfer ,  Sheng Qu

    IPC分类号： H04N19/90 ,  H04N19/126 ,  H04N19/136 ,  H04N19/186 ,  H04N19/179 ,  H04N19/187 ,  H04N19/36

    CPC分类号： H04N19/186 ,  G09G5/10 ,  G09G2370/04 ,  H04N19/126 ,  H04N19/132 ,  H04N19/136 ,  H04N19/142 ,  H04N19/179 ,  H04N19/182 ,  H04N19/187 ,  H04N19/30 ,  H04N19/36 ,  H04N19/90

    摘要： An encoder receives one or more input pictures of enhanced dynamic range (EDR) to be encoded in a coded bit stream comprising a base layer and one or more enhancement layer. The encoder comprises a base layer quantizer (BLQ) and an enhancement layer quantizer (ELQ) and selects parameters of the BLQ and the ELQ by a joint BLQ-ELQ adaptation method which given a plurality of candidate sets of parameters for the BLQ, for each candidate set, computes a joint BLQ-ELQ distortion value based on a BLQ distortion function, an ELQ distortion function, and at least in part on the number of input pixels to be quantized by the ELQ. The encoder selects as the output BLQ parameter set the candidate set for which the computed joint BLQ-ELQ distortion value is the smallest. Example ELQ, BLQ, and joint BLQ-ELQ distortion functions are provided.

    摘要翻译： 编码器接收要编码在包括基本层和一个或多个增强层的编码比特流中的增强动态范围（EDR）的一个或多个输入图像。 编码器包括基本层量化器（BLQ）和增强层量化器（ELQ），并且通过联合BLQ-ELQ适配方法来选择BLQ和ELQ的参数，该方法为每个BLQ给出了多个用于BLQ的候选参数组 候选集合，基于BLQ失真函数，ELQ失真函数，并且至少部分地基于由ELQ量化的输入像素的数量来计算联合BLQ-ELQ失真值。 编码器选择输出BLQ参数设置计算出的关节BLQ-ELQ失真值最小的候选组。 提供了例如ELQ，BLQ和联合BLQ-ELQ失真功能。

    Joint Base Layer and Enhancement Layer Quantizer Adaptation in EDR Video Coding
    6.
    发明申请
    Joint Base Layer and Enhancement Layer Quantizer Adaptation in EDR Video Coding 有权
    EDR视频编码中的联合基层和增强层量化器适应

    公开(公告)号：US20130329778A1

    公开(公告)日：2013-12-12

    申请号：US13908926

    申请日：2013-06-03

    申请人： Dolby Laboratories Licensing Corporation

    发明人： Guan-Ming Su ,  Qian Chen ,  Hubert Koepfer ,  Sheng Qu

    IPC分类号： H04N7/26

    CPC分类号： H04N19/186 ,  G09G5/10 ,  G09G2370/04 ,  H04N19/126 ,  H04N19/132 ,  H04N19/136 ,  H04N19/142 ,  H04N19/179 ,  H04N19/182 ,  H04N19/187 ,  H04N19/30 ,  H04N19/36 ,  H04N19/90

    摘要： An encoder receives one or more input pictures of enhanced dynamic range (EDR) to be encoded in a coded bit stream comprising a base layer and one or more enhancement layer. The encoder comprises a base layer quantizer (BLQ) and an enhancement layer quantizer (ELQ) and selects parameters of the BLQ and the ELQ by a joint BLQ-ELQ adaptation method which given a plurality of candidate sets of parameters for the BLQ, for each candidate set, computes a joint BLQ-ELQ distortion value based on a BLQ distortion function, an ELQ distortion function, and at least in part on the number of input pixels to be quantized by the ELQ. The encoder selects as the output BLQ parameter set the candidate set for which the computed joint BLQ-ELQ distortion value is the smallest. Example ELQ, BLQ, and joint BLQ-ELQ distortion functions are provided.

    摘要翻译： 编码器接收要编码在包括基本层和一个或多个增强层的编码比特流中的增强动态范围（EDR）的一个或多个输入图像。 编码器包括基本层量化器（BLQ）和增强层量化器（ELQ），并且通过联合BLQ-ELQ适配方法来选择BLQ和ELQ的参数，该方法为每个BLQ给出了多个用于BLQ的候选参数组 候选集合，基于BLQ失真函数，ELQ失真函数，并且至少部分地基于由ELQ量化的输入像素的数量来计算联合BLQ-ELQ失真值。 编码器选择输出BLQ参数设置计算出的关节BLQ-ELQ失真值最小的候选组。 提供了例如ELQ，BLQ和联合BLQ-ELQ失真功能。

    Layer decomposition in hierarchical VDR coding
    8.
    发明授权
    Layer decomposition in hierarchical VDR coding 有权

    公开(公告)号：US09924171B2

    公开(公告)日：2018-03-20

    申请号：US15280822

    申请日：2016-09-29

    申请人： Dolby Laboratories Licensing Corporation

    发明人： Guan-Ming Su ,  Sheng Qu ,  Samir N. Hulyalkar ,  Tao Chen ,  Walter C. Gish ,  Hubert Koepfer

    IPC分类号： H04N19/103 ,  H04N19/124 ,  H04N19/98 ,  H04N19/30 ,  H04N19/126

    CPC分类号： H04N19/124 ,  H04N19/103 ,  H04N19/126 ,  H04N19/142 ,  H04N19/187 ,  H04N19/30 ,  H04N19/98

    摘要： Techniques use multiple lower bit depth (e.g., 8 bits) codecs to provide higher bit depth (e.g., 12+ bits) high dynamic range images from an upstream device to a downstream device. Multiple layers comprising a base layer and one or more enhancement layers may be used to carry video signals comprising image data compressed by lower bit depth encoders to a downstream device, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance.

    Layer decomposition in hierarchical VDR coding
    10.
    发明授权
    Layer decomposition in hierarchical VDR coding 有权
    分层VDR编码中的层分解

    公开(公告)号：US09497456B2

    公开(公告)日：2016-11-15

    申请号：US14351647

    申请日：2012-11-01

    申请人： DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Guan-Ming Su ,  Sheng Qu ,  Samir N. Hulyalkar ,  Tao Chen ,  Walter C. Gish ,  Hubert Koepfer

    IPC分类号： H04N19/126 ,  H04N19/30 ,  H04N19/124 ,  H04N19/103 ,  H04N19/98

    CPC分类号： H04N19/124 ,  H04N19/103 ,  H04N19/126 ,  H04N19/142 ,  H04N19/187 ,  H04N19/30 ,  H04N19/98

    摘要： Techniques use multiple lower bit depth codecs to provide higher bit depth, high dynamic range, images from an upstream device to a downstream device. A base layer and one or more enhancement layers may be used to carry video signals, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance.

    摘要翻译： 技术使用多个较低位深度编解码器来提供更高的位深度，高动态范围，从上游设备到下游设备的图像。 基本层和一个或多个增强层可用于承载视频信号，其中基本层不能自己解码和观看。 低位深度输入图像数据到基层处理可以通过高级量化从较高位深度高动态范围输入图像数据生成，以最小化由增强层视频信号承载的图像数据的体积。 增强层视频信号中的图像数据可以部分地基于对应于高级量化中使用的特定方法的预测方法而包括残差值，量化参数和映射参数。 自适应动态范围适应技术考虑到特殊的过渡效应，如淡入和淡出，以提高编码性能。