Methods and apparatus for adaptively choosing a search range for motion estimation
    61.
    发明授权
    Methods and apparatus for adaptively choosing a search range for motion estimation 有权
    用于自适应地选择运动估计的搜索范围的方法和装置

    公开(公告)号:US08462852B2

    公开(公告)日:2013-06-11

    申请号:US12582061

    申请日:2009-10-20

    申请人: Lidong Xu Yi-Jen Chiu

    发明人: Lidong Xu Yi-Jen Chiu

    IPC分类号: H04N7/50

    摘要: Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.

    摘要翻译: 当在例如视频编码器或解码器上执行运动估计时,可用于确定搜索范围(SR)的系统,方法和计算机程序产品。 在运动估计期间确定当前块的运动矢量可以涉及在可能驻留在参考帧中的搜索窗口内或在空间上或时间上邻近当前块的先前解码的块中进行搜索。 这样的搜索寻找使度量最小化的运动矢量,诸如对应的参考帧块之间的绝对差的和。 使这种度量最小化的运动矢量可能是用于运动估计的良好候选。 如果确定搜索范围使得搜索范围有界,则搜索可能变得更有效。 可以在块级别或图片级别确定搜索范围。

    Power Efficient Motion Estimation Techniques for Video Encoding
    63.
    发明申请
    Power Efficient Motion Estimation Techniques for Video Encoding 有权
    用于视频编码的高效运动估计技术

    公开(公告)号:US20130022126A1

    公开(公告)日:2013-01-24

    申请号:US13638628

    申请日:2010-03-31

    IPC分类号: H04N7/28 H04N7/32

    摘要: Adaptive control can use hierarchical motion estimation (HME) and/or multiple reference motion estimation (MRME) for the motion estimation of current encoding blocks. Both HME and MRME are allowed in the motion estimation to achieve a high coding gain. Control consists of slice level control and macro-block (MB) level control. A slice is one or more contiguous macroblocks. In slice level control, it is decided to use only one reference frame or use multiple reference frames to coding current slice based on the motion vectors obtained in coarse level motion estimation. In MB level control, it is decided to perform MRME or perform HME for the MB and its subblocks based on the coarse level motion vectors of the MB.

    摘要翻译: 自适应控制可以对当前编码块的运动估计使用分层运动估计(HME)和/或多参考运动估计(MRME)。 在运动估计中允许HME和MRME两者实现高编码增益。 控制由片级控制和宏块(MB)级控制组成。 切片是一个或多个连续的宏块。 在片级控制中,决定仅使用一个参考帧或者使用多个参考帧来基于在粗略级运动估计中获得的运动矢量对当前片进行编码。 在MB级别控制中,决定执行MRME或基于MB的粗略级别运动向量对MB及其子块执行HME。

    In-Loop Adaptive Wiener Filter for Video Coding and Decoding
    64.
    发明申请
    In-Loop Adaptive Wiener Filter for Video Coding and Decoding 有权
    用于视频编码和解码的环路自适应维纳滤波器

    公开(公告)号:US20120219059A1

    公开(公告)日:2012-08-30

    申请号:US13466243

    申请日:2012-05-08

    申请人: Yi-Jen Chiu Lidong Xu

    发明人: Yi-Jen Chiu Lidong Xu

    IPC分类号: H04N7/26 H04N7/32

    摘要: A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.

    摘要翻译: 视频编码器可以在核心视频编码环路内使用自适应维纳滤波器来提高编码效率。 在一个实施例中,维纳滤波器可以在运动估计单元的输入上,并且在另一个实施例中,其可以在运动补偿单元的输出上。 用于维纳滤波器的抽头可以基于图像内的像素强度的至少一个区域的特性来确定。 因此,滤波可以是适应性的,因为它根据正在处理的视频的类型而变化。

    COLOR GAMUT SCALABILITY TECHNIQUES
    66.
    发明申请
    COLOR GAMUT SCALABILITY TECHNIQUES 审中-公开
    彩色游戏可扩展性技术

    公开(公告)号:US20140079134A1

    公开(公告)日:2014-03-20

    申请号:US13784978

    申请日:2013-03-05

    IPC分类号: H04N9/64 H04N7/30

    摘要: Techniques are described that can be used to either compress or expand video. Color compression techniques are described that can be used to compress the wide color gamut content into lower color gamut for inclusion in a baseline layer. Color expansion techniques are described that convert lower color gamut data into wider color gamut format for inclusion in an enhancement layer. Both of the baseline video stream and enhancement layer video streams may be transmitted through a channel or stored in a memory device to be viewed later. Accordingly, both baseline and enhancement video layers are available so that either lower or higher quality displays can be used to display video.

    摘要翻译: 描述了可用于压缩或扩展视频的技术。 描述了可用于将宽色域内容压缩成较低色域以包括在基线层中的彩色压缩技术。 描述了将较低色域数据转换成更宽的色域格式以包含在增强层中的颜色展开技术。 基线视频流和增强层视频流都可以通过信道发送或存储在存储设备中,以便稍后观看。 因此,基线和增强视频层都可用,以便可以使用较低或较高质量的显示器来显示视频。

    Color gamut scalability techniques
    67.
    发明授权
    Color gamut scalability techniques 有权
    色域可扩展性技术

    公开(公告)号:US08446961B2

    公开(公告)日:2013-05-21

    申请号:US12283305

    申请日:2008-09-11

    IPC分类号: H04N11/06

    摘要: Techniques are described that can be used to either compress or expand video. Color compression techniques are described that can be used to compress the wide color gamut content into lower color gamut for inclusion in a baseline layer. Color expansion techniques are described that convert lower color gamut data into wider color gamut format for inclusion in an enhancement layer. Both of the baseline video stream and enhancement layer video streams may be transmitted through a channel or stored in a memory device to be viewed later. Accordingly, both baseline and enhancement video layers are available so that either lower or higher quality displays can be used to display video.

    摘要翻译: 描述了可用于压缩或扩展视频的技术。 描述了可用于将宽色域内容压缩到较低色域以包含在基线层中的色彩压缩技术。 描述了将较低色域数据转换成更宽的色域格式以包含在增强层中的颜色展开技术。 基线视频流和增强层视频流都可以通过信道发送或存储在存储设备中,以便稍后观看。 因此,基线和增强视频层都可用,以便可以使用较低或较高质量的显示器来显示视频。

    POWER EFFICIENT MOTION ESTIMATION TECHNIQUES FOR VIDEO ENCODING
    68.
    发明申请
    POWER EFFICIENT MOTION ESTIMATION TECHNIQUES FOR VIDEO ENCODING 审中-公开
    用于视频编码的功率有效运动估计技术

    公开(公告)号:US20120281759A1

    公开(公告)日:2012-11-08

    申请号:US13001037

    申请日:2010-03-31

    IPC分类号: H04N7/32

    摘要: Adaptive control can use hierarchical motion estimation (HME) and/or multiple reference motion estimation (MRME) for the motion estimation of current encoding blocks. Both HME and MRME are allowed in the motion estimation to achieve a high coding gain. Control consists of slice level control and macro-block (MB) level control. A slice is one or more contiguous macroblocks. In slice level control, it is decided to use only one reference frame or use multiple reference frames to coding current slice based on the motion vectors obtained in coarse level motion estimation. In MB level control, it is decided to perform MRME or perform HME for the MB and its subblocks based on the coarse level motion vectors of the MB.

    摘要翻译: 自适应控制可以对当前编码块的运动估计使用分层运动估计(HME)和/或多参考运动估计(MRME)。 在运动估计中允许HME和MRME两者实现高编码增益。 控制由片级控制和宏块(MB)级控制组成。 切片是一个或多个连续的宏块。 在片级控制中,决定仅使用一个参考帧或者使用多个参考帧来基于在粗略级运动估计中获得的运动矢量对当前片进行编码。 在MB级别控制中,决定执行MRME或基于MB的粗略级别运动向量对MB及其子块执行HME。

    METHODS AND APPARATUS FOR ADAPTIVELY CHOOSING A SEARCH RANGE FOR MOTION ESTIMATION
    69.
    发明申请
    METHODS AND APPARATUS FOR ADAPTIVELY CHOOSING A SEARCH RANGE FOR MOTION ESTIMATION 有权
    适应性选择运动估计搜索范围的方法和装置

    公开(公告)号:US20110090964A1

    公开(公告)日:2011-04-21

    申请号:US12582061

    申请日:2009-10-20

    申请人: Lidong Xu Yi-Jen Chiu

    发明人: Lidong Xu Yi-Jen Chiu

    IPC分类号: H04N11/02

    摘要: Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.

    摘要翻译: 当在例如视频编码器或解码器上执行运动估计时,可用于确定搜索范围(SR)的系统,方法和计算机程序产品。 在运动估计期间确定当前块的运动矢量可以涉及在可能驻留在参考帧中的搜索窗口内或在空间上或时间上邻近当前块的先前解码的块中进行搜索。 这样的搜索寻找使度量最小化的运动矢量,诸如对应的参考帧块之间的绝对差的和。 使这种度量最小化的运动矢量可能是用于运动估计的良好候选。 如果确定搜索范围使得搜索范围有界,则搜索可能变得更有效。 可以在块级别或图片级别确定搜索范围。

    METHODS AND SYSTEMS FOR MOTION VECTOR DERIVATION AT A VIDEO DECODER
    70.
    发明申请
    METHODS AND SYSTEMS FOR MOTION VECTOR DERIVATION AT A VIDEO DECODER 有权
    在视频解码器上运动矢量派生的方法和系统

    公开(公告)号:US20110002390A1

    公开(公告)日:2011-01-06

    申请号:US12567540

    申请日:2009-09-25

    IPC分类号: H04N7/26

    摘要: Method and apparatus for deriving a motion vector at a video decoder. A block-based motion vector may be produced at the video decoder by utilizing motion estimation among available pixels relative to blocks in one or more reference frames. The available pixels could be, for example, spatially neighboring blocks in the sequential scan coding order of a current frame, blocks in a previously decoded frame, or blocks in a downsampled frame in a lower pyramid when layered coding has been used.

    摘要翻译: 用于在视频解码器处导出运动矢量的方法和装置。 可以通过利用可用像素中相对于一个或多个参考帧中的块的运动估计在视频解码器处产生基于块的运动矢量。 当使用分层编码时,可用像素可以是例如当前帧的顺序扫描编码顺序的空间相邻块,先前解码的帧中的块,或者在使用分层编码时在较低金字塔中的下采样帧中的块。