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    • 1. 发明申请
    • Guided Image Up-Sampling in Video Coding
    • 视频编码中的引导图像上采样
    • US20130039430A1
    • 2013-02-14
    • US13569125
    • 2012-08-07
    • Guan-Ming SuSheng QuYin PengYan Ye
    • Guan-Ming SuSheng QuYin PengYan Ye
    • H04N7/12
    • H04N19/44H04N19/117H04N19/137H04N19/186H04N19/187H04N19/33H04N19/46H04N19/59H04N19/80H04N19/86H04N19/89
    • 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.
    • 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。
    • 2. 发明授权
    • Guided image up-sampling in video coding
    • 视频编码中的引导图像上采样
    • US09100660B2
    • 2015-08-04
    • US13569125
    • 2012-08-07
    • Guan-Ming SuSheng QuYin PengYan Ye
    • Guan-Ming SuSheng QuYin PengYan Ye
    • H04N7/12H04N19/59H04N19/46H04N19/117H04N19/137H04N19/186H04N19/187H04N19/80H04N19/33H04N19/86
    • H04N19/44H04N19/117H04N19/137H04N19/186H04N19/187H04N19/33H04N19/46H04N19/59H04N19/80H04N19/86H04N19/89
    • 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.
    • 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。
    • 9. 发明授权
    • Video encoding by filter selection
    • 通过过滤器选择进行视频编码
    • US08811484B2
    • 2014-08-19
    • US12208269
    • 2008-09-10
    • Giovanni MottaMarta KarczewiczYan Ye
    • Giovanni MottaMarta KarczewiczYan Ye
    • H04N7/12
    • H04N19/577H04N19/117H04N19/136H04N19/147H04N19/19H04N19/192H04N19/523H04N19/61H04N19/80
    • A method and a device are described for selecting between multiple available filters in an encoder to provide a frame having a low error and distortion rate. For each full and sub pixel position, determining whether to use an alternative filter over the default filter during interpolation by estimating the rate distortion gain of using each filter and signaling to the decoder the optimal filter(s) applied to each full and sub-pixel position. In one embodiment, identifying a reference frame and a current frame, interpolating the reference frame using a default filter to create a default interpolated frame, interpolating the reference frame using an alternative filter to create an alternative interpolated frame, determining for each sub-pixel position whether to use the default filter or the alternative filter based on a minimal cost to generate a final reference frame.
    • 描述了用于在编码器中的多个可用滤波器之间进行选择以提供具有低误差和失真率的帧的方法和装置。 对于每个完整和子像素位置,通过估计使用每个滤波器的速率失真增益并向解码器发送信号,确定在插值期间是否使用默认滤波器上的替代滤波器,将最佳滤波器应用于每个全像素和子像素 位置。 在一个实施例中,识别参考帧和当前帧,使用默认滤波器内插参考帧以创建默认内插帧,使用替代滤波器内插参考帧以创建替代插值帧,确定每个子像素位置 是否使用默认过滤器或替代过滤器基于最小成本生成最终参考帧。
    • 10. 发明授权
    • Video decoding using temporally constrained spatial dependency
    • 视频解码使用时间约束空间依赖
    • US08724707B2
    • 2014-05-13
    • US12436953
    • 2009-05-07
    • Ming-Chang TsaiChia-Yuan TengYan Ye
    • Ming-Chang TsaiChia-Yuan TengYan Ye
    • H04N7/12
    • H04N19/55H04N19/132H04N19/162H04N19/17H04N19/44H04N19/61H04N19/70
    • This disclosure describes techniques for region-of-interest (ROI) encoding. In accordance with the techniques described herein, an encoding device may determine a temporal spatial dependency value for a candidate reference video block for inter-coding a current block in a video frame. The encoding device may compare the temporal spatial dependency value to a threshold value and select a coding mode for the current block based on the comparison. A decoding device may receive data defining a ROI as well as the temporal spatial dependency value and decode a video block in the ROI based at least in part on the temporal spatial dependency value. In this manner, the techniques of this disclosure may allow a video content viewer the ability to choose a ROI to watch.
    • 本公开描述了用于感兴趣区域(ROI)编码的技术。 根据本文描述的技术,编码设备可以确定候选参考视频块的时间空间依赖性值,用于对视频帧中的当前块进行帧间编码。 编码装置可以将时间空间相关性值与阈值进行比较,并且基于该比较选择当前块的编码模式。 解码装置可以至少部分地基于时间空间依赖性值来接收定义ROI的数据以及时间空间相关性值并对ROI中的视频块进行解码。 以这种方式,本公开的技术可以允许视频内容观看者选择要观看的ROI的能力。