COLOR GAMUT SCALABILITY TECHNIQUES
    61.
    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。

    LOW MEMORY ACCESS MOTION VECTOR DERIVATION
    63.
    发明申请
    LOW MEMORY ACCESS MOTION VECTOR DERIVATION 审中-公开
    低存储器访问运动矢量派生

    公开(公告)号:US20130287111A1

    公开(公告)日:2013-10-31

    申请号:US13976778

    申请日:2011-06-29

    IPC分类号: H04N7/36

    摘要: Systems, devices and methods for performing low memory access candidate-based decoder-side motion vector determination (DMVD) are described. The number of candidate motion vectors (MVs) searched may be confined by limiting the range of pixels associated with candidate MVs to a pre-defined window. Reference windows may then be loaded into memory only once for both DMVD and motion compensation (MC) processing. Reference window size may be adapted to different PU sizes. Further, various schemes are described for determining reference window positions.

    摘要翻译: 描述用于执行低存储器访问候选的解码器侧运动矢量确定(DMVD)的系统,设备和方法。 搜索的候选运动矢量(MV)的数量可以通过将与候选MV相关联的像素的范围限制为预定窗口来限制。 然后,对于DMVD和运动补偿(MC)处理,参考窗口可以仅被加载到存储器中一次。 参考窗口尺寸可以适应不同的PU尺寸。 此外,描述了用于确定参考窗口位置的各种方案。

    SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR TRANSFORM COEFFICIENT SUB-SAMPLING
    64.
    发明申请
    SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR TRANSFORM COEFFICIENT SUB-SAMPLING 有权
    用于变换系数子采样的系统,方法和计算机程序产品

    公开(公告)号:US20130188692A1

    公开(公告)日:2013-07-25

    申请号:US13709780

    申请日:2012-12-10

    IPC分类号: H04N7/26

    摘要: Video compression encoding includes intra and inter prediction to reduce spatial and temporal redundancies in video. Prediction results or residuals represent differences between original video pixel values and predicted pixel values. The prediction residuals may be transformed into coefficients, referred to as transform coefficients, in the frequency domain. The transform coefficients may be quantized and entropy encoded. The transform coefficients can be sub-sampled prior to quantization to reduce their number. For example, sub-sampling may reduce more high frequency components than low frequency components represented in the transform coefficients. Therefore, sub-sampling reduces the number of transform coefficients that need to be quantized, reduces quantization complexity, and correspondingly increases throughput in the encoding.

    摘要翻译: 视频压缩编码包括帧内和帧间预测,以减少视频中的空间和时间冗余。 预测结果或残差表示原始视频像素值与预测像素值之间的差异。 预测残差可以被变换为频域中被称为变换系数的系数。 可以对变换系数进行量化和熵编码。 变换系数可以在量化之前进行子采样以减少它们的数量。 例如,子采样可以减少比变换系数中表示的低频分量更多的高频分量。 因此,子采样减少了需要量化的变换系数的数量,降低了量化复杂度,并且相应地增加了编码中的吞吐量。

    LUMA-BASED CHROMA INTRA PREDICTION
    65.
    发明申请
    LUMA-BASED CHROMA INTRA PREDICTION 有权
    基于LUMA的色谱预测

    公开(公告)号:US20130136174A1

    公开(公告)日:2013-05-30

    申请号:US13512992

    申请日:2011-07-12

    IPC分类号: H04N7/26 H04N7/32

    摘要: Systems, devices and methods for performing luma-based chroma ultra prediction are described. Down-sample filters may be applied to luma values of luma pixel positions to generate reconstructed luma values for chroma pixel positions in a prediction unit of an intra frame. The down-sampled reconstructed luma values may then be used to predict chroma values for the chroma pixel positions. In some implementations, a reconstructed luma value of a chroma position may be used to predict that position's chroma value. In other implementations, reconstructed luma values of neighboring chroma pixel positions may be analyzed to adaptively predict a chroma value for a chroma pixel position.

    摘要翻译: 描述了用于执行基于亮度的色度帧内预测的系统,设备和方法。 下采样滤波器可以应用于亮度像素位置的亮度值,以生成帧内预测单元中的色度像素位置的重建亮度值。 然后可以使用下采样的重构亮度值来预测色度像素位置的色度值。 在一些实现中,可以使用色度位置的重建亮度值来预测该位置的色度值。 在其他实现中,可以分析相邻色度像素位置的重建亮度值以自适应地预测色度像素位置的色度值。

    Color gamut scalability techniques
    66.
    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
    67.
    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
    68.
    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
    69.
    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。

    Selective Local Adaptive Wiener Filter for Video Coding and Decoding
    70.
    发明申请
    Selective Local Adaptive Wiener Filter for Video Coding and Decoding 有权
    用于视频编码和解码的选择性局部自适应维纳滤波器

    公开(公告)号:US20100254448A1

    公开(公告)日:2010-10-07

    申请号:US12418804

    申请日:2009-04-06

    IPC分类号: H04N7/12

    摘要: An adaptive Wiener filter may be applied to improve coding efficiency because of information lost during quantization of the video encoding process. The Wiener filter may be selectively applied globally to an entire picture or locally to portions of the picture. Histogram segmentation may be used to select pixels for Wiener filtering in some embodiments. The Wiener filter may be adaptively applied to histogram bins, improving coding efficiency in some cases.

    摘要翻译: 可以应用自适应维纳滤波器来提高编码效率,因为在视频编码处理的量化期间信息丢失。 Wiener滤波器可以全局地选择性地应用于整个图像,或者局部地应用于图像的一部分。 在一些实施例中,直方图分割可用于选择维纳滤波的像素。 维纳滤波器可以自适应地应用于直方图盒,在一些情况下提高编码效率。