METHOD AND APPARATUS FOR PREDICTION MODE AND PARTITION MODE SYNTAX CODIND FOR CODING UNITS IN HEVC
    31.
    发明申请
    METHOD AND APPARATUS FOR PREDICTION MODE AND PARTITION MODE SYNTAX CODIND FOR CODING UNITS IN HEVC 审中-公开
    用于HEVC中编码单元的预测模式和分割模式语法编码的方法和装置

    公开(公告)号:US20140211850A1

    公开(公告)日:2014-07-31

    申请号:US14342357

    申请日:2012-08-29

    申请人: Ximin Zhang Shan Liu

    发明人: Ximin Zhang Shan Liu

    摘要: A method and apparatus for coding of syntax elements are disclosed to allow prediction units in P and B slices to share the same syntax coding table. In one embodiment according to the present invention, the method and apparatus coding of syntax elements selectively apply a syntax coding table to encode or decode the syntax element associated with the partition mode of a coding unit of a picture region according to the slice type of the picture region. A first syntax coding table is used to process the syntax element if the slice type is an I mode and a second syntax coding table is used to process the syntax element if the slice type is not an I mode.

    摘要翻译: 公开了用于编码语法元素的方法和装置,以允许P和B片段中的预测单元共享相同的语法编码表。 在根据本发明的一个实施例中,语法元素的方法和装置编码选择性地应用语法编码表,以根据图像区域的切片类型来编码或解码与图像区域的编码单元的分割模式相关联的语法元素 图片区域。 如果片类型是I模式,则第一语法编码表用于处理语法元素,并且如果片类型不是I模式,则使用第二语法编码表来处理语法元素。

    Apparatus and method of constrained partition size for high efficiency video coding
    32.
    发明授权
    Apparatus and method of constrained partition size for high efficiency video coding 有权
    用于高效率视频编码的约束分区大小的装置和方法

    公开(公告)号:US08526495B2

    公开(公告)日:2013-09-03

    申请号:US13012811

    申请日:2011-01-25

    IPC分类号: H04B1/66 H04N7/26

    摘要: An apparatus and method for video coding and decoding with constrained PU partition are disclosed. In the High Efficient Video Coding (HEVC) system, rate-distortion function or other performance criterion usually is evaluated for various CU partition and PU partition during the encoding process in order to select a configuration with best possible performance. The PU design in the current HEVC development results in some redundancy that causes rate-distortion function or other performance criterion repeatedly evaluated for same PU configuration. Accordingly, constrained PU partition is developed to eliminate or reduce the redundancy in processing. Furthermore, necessary syntax to convey the information related to constrained PU partition between an encoder and a decoder is developed. Systems embodying the present invention has been shown to result in sizeable reduction in encoding and decoding time while the performance in terms of RD-rate remains approximately the same or slightly higher than a conventional HEVC system.

    摘要翻译: 公开了一种用于具有约束PU分区的视频编码和解码的装置和方法。 在高效视频编码(HEVC)系统中,通常在编码过程中针对各种CU分区和PU分区评估速率失真函数或其他性能标准,以选择具有最佳性能的配置。 在当前HEVC开发中的PU设计导致一些冗余,导致对相同PU配置重复评估的速率失真功能或其他性能标准。 因此,开发了约束PU分区以消除或减少处理中的冗余。 此外,开发了在编码器和解码器之间传送与约束PU分区有关的信息的必要语法。 已经显示体现本发明的系统导致编码和解码时间的相当大的降低,而在RD速率方面的性能保持与常规HEVC系统大致相同或略高。

    Method for video transcoding with adaptive frame rate control
    33.
    发明授权
    Method for video transcoding with adaptive frame rate control 有权
    用自适应帧速率控制进行视频转码的方法

    公开(公告)号:US08300688B2

    公开(公告)日:2012-10-30

    申请号:US12016049

    申请日:2008-01-17

    申请人: Ligang Lu Shan Liu

    发明人: Ligang Lu Shan Liu

    IPC分类号: H04N7/12 G06K9/36

    CPC分类号: H04N19/40

    摘要: A video transcoding method is provided for transcoding a first signal stream compressed by a first coding scheme to a second signal stream compressed by a second coding scheme. The method employs an adaptive frame rate and a joint temporal-spatial rate control technique, such that the overall quality of compressed MPEG video can be significantly enhanced when the transcoding is controlled in the joint temporal (picture or frame rate) and spatial (quantization) domains. One embodiment considers transcoding from high bit rate video with larger image size (e.g. 4CIF/4SIF, CIF) coded by one coding technique, e.g., MPEG-2 to a lower bit rate video with smaller image size (e.g. CIF, QCIF) coded by the same or another coding technique, e.g., MPEG-4.

    摘要翻译: 提供了一种视频转码方法,用于将由第一编码方案压缩的第一信号流转码为由第二编码方案压缩的第二信号流。 该方法采用自适应帧速率和联合时空速率控制技术,使得当在联合时间(图像或帧速率)和空间(量化)控制中进行代码转换时,可以显着增强压缩MPEG视频的总体质量, 域名 一个实施例考虑通过一种编码技术(例如MPEG-2)将较大图像大小(例如4CIF / 4SIF,CIF)的高比特率视频代码转换为具有较小图像大小的较低比特率视频(例如,CIF,QCIF),其由 相同或另一种编码技术,例如MPEG-4。

    Inverse tone mapping for bit-depth scalable image coding
    34.
    发明授权
    Inverse tone mapping for bit-depth scalable image coding 有权
    用于位深度可缩放图像编码的逆色调映射

    公开(公告)号:US08085852B2

    公开(公告)日:2011-12-27

    申请号:US11768434

    申请日:2007-06-26

    IPC分类号: H04N11/02 H04B1/66 H04B14/00

    摘要: A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image the following steps are performed. A scaling factor is determined for a current block of the image by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block in which a bit-depth of the mapped block is greater than the bit-depth of the current block.

    摘要翻译: 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块,执行以下步骤。 通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差异来为图像的当前块确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值,以产生其中映射块的位深大于当前块的位深度的映射块。

    Inverse tone mapping for bit-depth scalable image coding adapted to variable block sizes
    35.
    发明授权
    Inverse tone mapping for bit-depth scalable image coding adapted to variable block sizes 有权
    适用于可变块大小的位深度可缩放图像编码的逆色调映射

    公开(公告)号:US07983496B2

    公开(公告)日:2011-07-19

    申请号:US12039007

    申请日:2008-02-28

    IPC分类号: G06K9/36

    摘要: A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image a scaling factor is determined by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block. The inverse tone mapping can also be applied to blocks of different sizes.

    摘要翻译: 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块,通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差来确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值以产生映射块。 逆音调映射也可以应用于不同大小的块。

    SYSTEM AND METHODS FOR DETECTING AND HANDLING ERRORS IN A MULTI-THREADED VIDEO DATA DECODER
    38.
    发明申请
    SYSTEM AND METHODS FOR DETECTING AND HANDLING ERRORS IN A MULTI-THREADED VIDEO DATA DECODER 有权
    用于在多线程视频数据解码器中检测和处理错误的系统和方法

    公开(公告)号:US20080049844A1

    公开(公告)日:2008-02-28

    申请号:US11844287

    申请日:2007-08-23

    IPC分类号: H04N7/26

    摘要: Apparatus and methods for decoding streaming data containing one or more coded pictures in which each picture contains a plurality of slices and each slice containing a plurality of macroblocks are disclosed. A first decoding subtask is performed on all macroblocks in the coded picture or a section thereof. After performing the first decoding subtask on all macroblocks in the coded picture or a section thereof, a second decoding subtask is performed on all the macroblocks in the coded picture or section thereof. One or more of the first and second tasks includes examining a slice or macroblock within the coded picture to determine if there are any errors, and if an error is present, handling the error.

    摘要翻译: 公开了用于解码包含一个或多个编码图像的流数据的装置和方法,其中每个图像包含多个片,并且每个片包含多个宏块。 对编码图像中的所有宏块或其一部分执行第一解码子任务。 在编码图像或其一部分中的所有宏块上执行第一解码子任务之后,对编码图像或其部分中的所有宏块执行第二解码子任务。 第一和第二任务中的一个或多个包括检查编码图像内的切片或宏块以确定是否存在任何错误,并且如果存在错误,则处理该错误。

    Method and apparatus of slice boundary filtering for high efficiency video coding
    39.
    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

    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 for Intra mode coding in HEVC
    40.
    发明授权
    Method and apparatus for Intra mode coding in HEVC 有权
    HEVC内模式编码的方法和装置

    公开(公告)号:US09363511B2

    公开(公告)日:2016-06-07

    申请号:US13810205

    申请日:2012-08-28

    申请人: Ximin Zhang Shan Liu

    发明人: Ximin Zhang Shan Liu

    摘要: A method and apparatus for Intra prediction mode encoding or decoding based on multi-level most probable modes (MPMs) are disclosed. In one embodiment according to the present invention, the method and apparatus for encoding or decoding Intra prediction mode for 4×4 prediction unit (PU) use 19 Intra mode candidates to have full directional coverage or 35 Intra mode candidates as used by 8×8, 16×16 and 32×32 PUs. In another embodiment of the present invention, three MPMs are used to code the Intra modes. Various methods to derive the three MPMs based on the Intra modes of neighboring blocks are disclosed. In yet another embodiment of the present invention, the coding method for the remaining modes comprises fixed length coding. In addition, variable length coding for the remaining modes are also disclosed.

    摘要翻译: 公开了一种基于多级最可能模式(MPM)的帧内预测模式编码或解码的方法和装置。 在根据本发明的一个实施例中,用于编码或解码用于4×4预测单元(PU)的帧内预测模式的方法和装置使用19个模式内候选以具有全方位覆盖或35×8模式候选,如8×8 ,16×16和32×32 PU。 在本发明的另一实施例中,使用三个MPM来编码内部模式。 公开了基于相邻块的帧内模式导出三个MPM的各种方法。 在本发明的另一个实施例中,其余模式的编码方法包括固定长度编码。 此外,还公开了其余模式的可变长度编码。