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    LOW MEMORY ACCESS MOTION VECTOR DERIVATION
    96.
    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

    Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang

    Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang

    IPC: H04N7/36

    CPC classification number: H04N19/513 ,  H04N19/44 ,  H04N19/57

    Abstract: 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.

    Abstract translation: 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
    97.
    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

    Applicant: Yi-Jen Chiu ,  Wenhao Zhang ,  Lidong Xu ,  Yu Han ,  Hong Jiang

    Inventor： Yi-Jen Chiu ,  Wenhao Zhang ,  Lidong Xu ,  Yu Han ,  Hong Jiang

    IPC: H04N7/26

    CPC classification number: H04N19/60 ,  H04N19/132 ,  H04N19/154 ,  H04N19/159 ,  H04N19/176 ,  H04N19/48

    Abstract: 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.

    Abstract translation: 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
    98.
    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

    Applicant: Lidong Xu ,  Yu Han ,  Yi-Jen Chiu ,  Wenhao Zhang

    Inventor： Lidong Xu ,  Yu Han ,  Yi-Jen Chiu ,  Wenhao Zhang

    IPC: H04N7/26 ,  H04N7/32

    CPC classification number: H04N19/00569 ,  H04N19/105 ,  H04N19/11 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82

    Abstract: 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.

    Abstract translation: 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。

    Methods and systems for short range motion compensation de-interlacing
    99.
    发明授权
    Methods and systems for short range motion compensation de-interlacing 有权
    短距离运动补偿去隔行的方法和系统

    公开(公告)号：US08405769B2

    公开(公告)日：2013-03-26

    申请号：US12644463

    申请日：2009-12-22

    Applicant: Jong Dae Oh ,  Yi-Jen Chiu

    Inventor： Jong Dae Oh ,  Yi-Jen Chiu

    IPC: H04N7/01

    CPC classification number: H04N7/012

    Abstract: Systems and methods for choosing whether to select either a spatial interpolation value or a motion compensation interpolation value for deinterlacing an interlaced frame. A minimal sum of absolute differences (SAD) may be determined for a current pixel. Depending on the magnitude of the minimal SAD relative to two threshold values, different checks may be applied. The outcome of the checks may determine whether the spatial interpolation value or the motion compensation interpolation value may be used in deinterlacing. Generally, the magnitude of the minimal SAD may determine the reliability of the SAD and the consequent trustworthiness of the associated motion vector (MV). Greater reliability of the minimal SAD may suggest that the motion compensation interpolation value may be used for purposes of deinterlacing. Less reliability in the minimal SAD may motivate additional checks to further evaluate whether the motion compensation interpolation value should be used. A less reliable minimal SAD and/or failure of some of the checks may suggest that the motion compensation interpolation value should not be used.

    Abstract translation: 用于选择是否选择空间插值或用于去隔行隔行帧的运动补偿内插值的系统和方法。 可以为当前像素确定绝对差的最小和（SAD）。 根据相对于两个阈值的最小SAD的大小，可以应用不同的检查。 检查的结果可以确定空间内插值还是运动补偿内插值可以用于去隔行扫描。 通常，最小SAD的幅度可以确定SAD的可靠性和相关联的运动矢量（MV）的随后的可信度。 最小SAD的更高的可靠性可能表明运动补偿内插值可以用于去隔行扫描。 最小SAD中的较低的可靠性可能会激发额外的检查，以进一步评估是否应使用运动补偿内插值。 不太可靠的最小SAD和/或某些检查失败可能表明不应该使用运动补偿内插值。

    POWER EFFICIENT MOTION ESTIMATION TECHNIQUES FOR VIDEO ENCODING
    100.
    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

    Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Hong Jiang

    Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Hong Jiang

    IPC: H04N7/32

    CPC classification number: H04N19/53 ,  H04N19/105 ,  H04N19/109 ,  H04N19/174 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/37 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61

    Abstract: 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.

    Abstract translation: 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。

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