Methods and Apparatus for Motion Compensation with Smooth Reference Frame in Bit Depth Scalability
    2.
    发明申请
    Methods and Apparatus for Motion Compensation with Smooth Reference Frame in Bit Depth Scalability 有权
    用于运动补偿的平滑参考框架在位深度可扩展性的方法和装置

    公开(公告)号:US20110293013A1

    公开(公告)日:2011-12-01

    申请号:US13138342

    申请日:2009-12-11

    IPC分类号: H04N7/32 H04N7/26

    摘要: Methods and apparatus are provided for motion compensation with a smooth reference frame in bit depth scalability. An apparatus includes an encoder for encoding picture data for at least a portion of a picture by generating an inter-layer residue prediction for the portion using an inverse tone mapping operation performed in the pixel domain for bit depth scalability. The inverse tone mapping operation is shifted from a residue domain to the pixel domain.

    摘要翻译: 为比特深度可扩展性的平滑参考帧提供运动补偿的方法和装置。 一种装置包括:编码器,用于通过使用在像素域中进行的逆色调映射操作生成用于比特深度可缩放性的部分的该部分的层间残差预测,对图像的至少一部分进行图像数据的编码。 逆色调映射操作从残留域移动到像素域。

    Guided image up-sampling in video coding
    3.
    发明授权
    Guided image up-sampling in video coding 有权
    视频编码中的引导图像上采样

    公开(公告)号:US09100660B2

    公开(公告)日:2015-08-04

    申请号:US13569125

    申请日:2012-08-07

    摘要: An encoder receives a first image of a first spatial resolution and a second image of a second spatial resolution, wherein both the first image and the second image represent the same scene and the second spatial resolution is higher than the first spatial resolution. A filter is selected to up-sample the first image to a third image with a spatial resolution same as the second spatial resolution. The filtering coefficients for the up-sampling filter are computed by minimizing an error measurement (e.g., MSE) between pixel values of the second image and the third image. The computed set of filtering coefficients is signaled to a receiver (e.g., as metadata). A decoder receives the first image (or its approximation) and the metadata, and may up-sample the first image using the same filter and optimally selected filtering coefficients as those derived by the encoder.

    摘要翻译: 编码器接收第一空间分辨率的第一图像和第二空间分辨率的第二图像,其中第一图像和第二图像都表示相同的场景,并且第二空间分辨率高于第一空间分辨率。 选择滤波器以将第一图像向第三图像进行上采样,其具有与第二空间分辨率相同的空间分辨率。 通过最小化第二图像和第三图像的像素值之间的误差测量(例如,MSE)来计算上采样滤波器的滤波系数。 所计算的滤波系数组被发送给接收机(例如,作为元数据)。 解码器接收第一图像(或其近似值)和元数据,并且可以使用与编码器导出的滤波系数相同的滤波器和最佳选择的滤波系数来对第一图像进行采样。

    Guided Image Up-Sampling in Video Coding
    4.
    发明申请
    Guided Image Up-Sampling in Video Coding 有权
    视频编码中的引导图像上采样

    公开(公告)号:US20130039430A1

    公开(公告)日:2013-02-14

    申请号:US13569125

    申请日:2012-08-07

    IPC分类号: H04N7/12

    摘要: An encoder receives a first image of a first spatial resolution and a second image of a second spatial resolution, wherein both the first image and the second image represent the same scene and the second spatial resolution is higher than the first spatial resolution. A filter is selected to up-sample the first image to a third image with a spatial resolution same as the second spatial resolution. The filtering coefficients for the up-sampling filter are computed by minimizing an error measurement (e.g., MSE) between pixel values of the second image and the third image. The computed set of filtering coefficients is signaled to a receiver (e.g., as metadata). A decoder receives the first image (or its approximation) and the metadata, and may up-sample the first image using the same filter and optimally selected filtering coefficients as those derived by the encoder.

    摘要翻译: 编码器接收第一空间分辨率的第一图像和第二空间分辨率的第二图像,其中第一图像和第二图像都表示相同的场景,并且第二空间分辨率高于第一空间分辨率。 选择滤波器以将第一图像向第三图像进行上采样,其具有与第二空间分辨率相同的空间分辨率。 通过最小化第二图像和第三图像的像素值之间的误差测量(例如,MSE)来计算上采样滤波器的滤波系数。 所计算的滤波系数组被发送给接收机(例如,作为元数据)。 解码器接收第一图像(或其近似值)和元数据,并且可以使用与编码器导出的滤波系数相同的滤波器和最佳选择的滤波系数来对第一图像进行采样。