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    Method and Apparatus of Scalable Video Coding
    2.
    发明申请
    Method and Apparatus of Scalable Video Coding 有权
    可扩展视频编码的方法和装置

    公开(公告)号：US20140003495A1

    公开(公告)日：2014-01-02

    申请号：US14005555

    申请日：2012-05-31

    申请人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

    发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei

    IPC分类号： H04N7/26

    CPC分类号： H04N19/51 ,  H04N19/119 ,  H04N19/30 ,  H04N19/33 ,  H04N19/463 ,  H04N19/517 ,  H04N19/52

    摘要： A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion vector predictor (MVP) information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Lop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter.

    摘要翻译： 公开了一种用于可缩放视频编码的方法和装置，其中将视频数据配置为基本层（BL）和增强层（EL），并且其中EL具有比BL更高的空间分辨率或更好的视频质量。 根据本发明的实施例，利用来自基础层的信息来对增强层进行编码。 增强层的信息编码包括CU结构，运动矢量预测器（MVP）信息，MVP /合并候选，帧内预测模式，残余四叉树信息，纹理信息，残差信息，上下文自适应熵编码，自适应Lop滤波器（ALF） 采样自适应偏移（SAO）和去块滤波器。

    METHOD AND APPARATUS FOR REDUCTION OF IN-LOOP FILTER BUFFER
    3.
    发明申请
    METHOD AND APPARATUS FOR REDUCTION OF IN-LOOP FILTER BUFFER 审中-公开
    减少内循环滤波器缓冲器的方法和装置

    公开(公告)号：US20130322523A1

    公开(公告)日：2013-12-05

    申请号：US13985564

    申请日：2012-04-19

    申请人： Yu-Wen Huang ,  Chia-Yang Tsai ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Shaw-Min Lei

    发明人： Yu-Wen Huang ,  Chia-Yang Tsai ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Shaw-Min Lei

    IPC分类号： H04N7/26

    CPC分类号： H04N19/46 ,  H04N19/117 ,  H04N19/132 ,  H04N19/134 ,  H04N19/182 ,  H04N19/423 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

    摘要： A method and apparatus for in-loop processing of reconstructed video are disclosed. The method and apparatus configure the in-loop processing so that the processing requires no pixel or reduced pixels from other side of a virtual boundary. When the in-loop processing of the to-be-processed pixel requires a pixel from the other side of the virtual boundary, the pixel from the other side of the virtual boundary is replaced by a replacement pixel. The in-loop processing can also be configured to skip the pixel when the processing requires a pixel from other side of the virtual boundary. The in-loop processing can also be configured to change ALF filter shape or filter size when the in-loop processing requires a pixel from other side of the virtual boundary. A filtered output can be combined linearly or nonlinearly with the to-be-processed pixel to generate a final filter output.

    摘要翻译： 公开了重建视频的环路处理方法和装置。 该方法和装置配置环路内处理，使得处理不需要来自虚拟边界的另一侧的像素或缩小像素。 当待处理像素的循环处理需要来自虚拟边界的另一侧的像素时，来自虚拟边界的另一侧的像素被替换像素替代。 当处理需要来自虚拟边界的另一侧的像素时，也可以配置循环处理以跳过像素。 当内循环处理需要来自虚拟边界的另一侧的像素时，也可以将循环处理配置为改变ALF滤波器形状或滤波器大小。 经滤波的输出可以与要处理的像素线性或非线性组合以产生最终的滤波器输出。

    Method and apparatus of slice boundary filtering for high efficiency video coding
    6.
    发明授权
    Method and apparatus of slice boundary filtering for high efficiency video coding 有权
    用于高效率视频编码的片边界滤波的方法和装置

    公开(公告)号：US09525884B2

    公开(公告)日：2016-12-20

    申请号：US12978490

    申请日：2010-12-24

    申请人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shan Liu ,  Shaw-Min Lei

    发明人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shan Liu ,  Shaw-Min Lei

    IPC分类号： H04N19/86 ,  H04N19/70 ,  H04N19/436 ,  H04N19/42 ,  H04N19/174 ,  H04N19/117 ,  H04N19/136 ,  H04N19/82 ,  H04N19/13 ,  H04N7/26 ,  H04N19/115 ,  H04N19/61

    CPC分类号： H04N19/439 ,  H04N19/115 ,  H04N19/117 ,  H04N19/136 ,  H04N19/174 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

    摘要： An apparatus and method for video coding having intra-slice deblocking, intra-slice adaptive loop filter, and intra-slice adaptive offset are disclosed. In a video coding system, a picture is often divided into slices and each slice is independently processed so that errors or missing data from one slice cannot propagate to any other slice within the picture. In the recent high efficiency video coding (HEVC) development, deblock filtering (DF), adaptive loop filter (ALF) and adaptive offset (AO) may be applied to reconstructed slices. When the processing is applied across slice boundaries, it may rely on pixels outside the current slice and cause dependency of the current slice on other slice(s). Consequently, the DF/ALF/AO processing on a reconstructed slice may have to wait until the reconstructed slices that it is dependent from complete the DF/ALF/AO processing. To overcome the slice boundary issue, intra-slice DF/ALF/AO is developed that does not rely on any pixel outside the currently slice. An optional slice boundary filter may be applied to slice boundaries after all slices are processed by the intra-slice DF/ALF/AO.

    摘要翻译： 公开了一种具有片内解块，片内自适应环路滤波器和片内自适应偏移的视频编码的装置和方法。 在视频编码系统中，图像通常被分成片，并且每个片被独立地处理，使得来自一个片的错误或丢失的数据不能传播到图片内的任何其他片。 在最近的高效率视频编码（HEVC）开发中，解块滤波（DF），自适应环路滤波器（ALF）和自适应偏移（AO）可以应用于重构的片段。 当跨越切片边界应用处理时，它可以依赖于当前切片外部的像素，并且导致当前切片对其他切片的依赖。 因此，在重构的切片上的DF / ALF / AO处理可能必须等待直至重构的切片依赖于完成DF / ALF / AO处理。 为了克服切片边界问题，开发了片内DF / ALF / AO，其不依赖于当前切片之外的任何像素。 在片内DF / ALF / AO处理所有片段之后，可选择的片边界滤波器可应用于片边界。

    Method and apparatus of region-based adaptive loop filtering
    7.
    发明授权
    Method and apparatus of region-based adaptive loop filtering 有权
    基于区域的自适应环路滤波的方法和装置

    公开(公告)号：US08861617B2

    公开(公告)日：2014-10-14

    申请号：US13177343

    申请日：2011-07-06

    申请人： Ching-Yeh Chen ,  Chih-Ming Fu ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

    发明人： Ching-Yeh Chen ,  Chih-Ming Fu ,  Chia-Yang Tsai ,  Yu-Wen Huang ,  Shaw-Min Lei

    IPC分类号： H04N7/26 ,  H04N19/82 ,  H04N19/17 ,  H04N19/117 ,  H04N19/147 ,  H04N19/127

    CPC分类号： H04N19/00103 ,  H04N19/117 ,  H04N19/127 ,  H04N19/147 ,  H04N19/17 ,  H04N19/82

    摘要： In a block-based motion compensated system, coding noises may arise due to lossy operations. Adaptive loop filter (ALF) is a technique used to improve the quality. A pixel adaptive (PA) ALF method was developed that uses the Sum-modified Laplacian Measure (SLM) to classify pixels and applies a respective ALF filter to each pixel according to the SLM. While the PA ALF achieves better performance over a conventional single filter (SF) based ALF, the PA ALF causes higher complexity and consumes more power due to the high complexity and per-pixel filter switching. Accordingly region based ALF scheme is disclosed which allows adaptive filter selection on a region by region basis and does not require per-pixel filter switching. In one embodiment according to the present invention, a picture is divided into M×N regions. The region based ALF also allows region merging for the M×N regions to improve performance. In another aspect of the present invention, the optimal ALF design also takes into consideration of the system complexity by using rate-distortion-complexity optimization (RDCO). The RDCO technique is also applied to sample adaptive offset (SAO) design.

    摘要翻译： 在基于块的运动补偿系统中，由于有损操作可能会产生编码噪声。 自适应环路滤波器（ALF）是一种用于提高质量的技术。 开发了像素自适应（PA）ALF方法，其使用Sum-Modified Laplacian Measure（SLM）对像素进行分类，并根据SLM对每个像素应用相应的ALF滤波器。 虽然PA ALF比传统的基于单滤波器（SF）的ALF具有更好的性能，但是由于高复杂性和每像素滤波器切换，PA ALF导致更高的复杂度并且消耗更多的功率。 公开了基于区域的ALF方案，其允许在逐个区域的基础上进行自适应滤波器选择，并且不需要每像素滤波器切换。 在根据本发明的一个实施例中，图片被分成M×N个区域。 基于区域的ALF还允许区域合并M×N区域以提高性能。 在本发明的另一方面，最佳ALF设计还通过使用速率 - 失真 - 复杂度优化（RDCO）来考虑系统的复杂性。 RDCO技术也适用于采样自适应偏移（SAO）设计。

    Apparatus and Method for High Efficiency Video Coding Using Flexible Slice Structure
    8.
    发明申请
    Apparatus and Method for High Efficiency Video Coding Using Flexible Slice Structure 有权
    使用柔性切片结构的高效率视频编码的装置和方法

    公开(公告)号：US20120106652A1

    公开(公告)日：2012-05-03

    申请号：US12966411

    申请日：2010-12-13

    申请人： Yu-Wen Huang ,  Chih-Ming Fu ,  Ching-Yeh Chen ,  Chih-Wei Hsu ,  Shaw-Min Lei

    发明人： Yu-Wen Huang ,  Chih-Ming Fu ,  Ching-Yeh Chen ,  Chih-Wei Hsu ,  Shaw-Min Lei

    IPC分类号： H04N7/26

    CPC分类号： H04N19/174 ,  H04N19/61 ,  H04N19/70

    摘要： An apparatus and method for video coding based on flexible slice structure are disclosed. In the recent high efficiency video coding (HEVC) development, the slice may contain multiple LCUs instead of macroblocks. The LCU size being considered is 64×64 pixels which is much larger than the macroblock size of 16×16 pixels. Compared with the macroblock aligned slice for H.264, the LCU-aligned slice for HEVC does not provide enough granularities for dividing video frames. Consequently, a flexible slice structure is developed where slice partition is based on smaller coding units. In the flexible slice structure, the first LCU and the last LCU of the slice are allowed to be a fractional LCU, which is derived from a whole LCU using quadtree partition. Syntax elements are also developed to enable conveyance of flexible slice structure between an encoder and a decoder efficiently.

    摘要翻译： 公开了一种基于柔性切片结构的视频编码的装置和方法。 在最近的高效率视频编码（HEVC）开发中，切片可以包含多个LCU而不是宏块。 所考虑的LCU尺寸是64×64像素，远大于16×16像素的宏块大小。 与H.264的宏块对准切片相比，HEVC的LCU对齐切片不能提供足够的粒度来分割视频帧。 因此，开发了一种灵活的切片结构，其中切片分区基于较小的编码单位。 在柔性切片结构中，切片的第一个LCU和最后一个LCU被允许为使用四叉树分区的整个LCU导出的分数LCU。 还开发了语法元件以有效地在编码器和解码器之间传送柔性片结构。

    Method and apparatus of adaptive loop filtering
    10.
    发明授权
    Method and apparatus of adaptive loop filtering 有权

    公开(公告)号：US09813738B2

    公开(公告)日：2017-11-07

    申请号：US13216242

    申请日：2011-08-24

    申请人： Chia-Yang Tsai ,  Chih-Ming Fu ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shaw-Min Lei

    发明人： Chia-Yang Tsai ,  Chih-Ming Fu ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shaw-Min Lei

    IPC分类号： H04N19/82 ,  H04N19/42 ,  H04N19/80 ,  H04N19/147 ,  H04N19/176 ,  H04N19/17 ,  H04N19/182 ,  H04N19/119 ,  H04N19/117

    CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/119 ,  H04N19/147 ,  H04N19/17 ,  H04N19/176 ,  H04N19/182 ,  H04N19/439 ,  H04N19/80

    摘要： A method and apparatus for processing in-loop reconstructed video using an in-loop filter is disclosed. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process in-loop reconstruction video data, where ALF can be selectively turned ON or OFF for each block in a frame or a slice. An advanced ALF is disclosed later that allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. In the present disclosure, pixels of the in-loop reconstructed video data are divided into a plurality of to-be-filtered regions, and an in-loop filter from a filter set is determined for each to-be-filtered region based on a rate-distortion optimization procedure. According to one embodiment of the present invention, computation of cost function associated with the rate-distortion optimization procedure is related to correlation values associated with original video data and the in-loop reconstructed video data. Furthermore, the correlation values can be shared by the multiple candidate filters during the rate-distortion optimization procedure for said each to-be-filtered region. In another embodiment, the correlation values can be shared by multiple candidate to-be-filtered regions of an area of the in-loop reconstructed video data during the rate-distortion optimization procedure for the area of the in-loop reconstructed video data.