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    CROSS-CHANNEL RESIDUAL PREDICTION
    14.
    发明申请
    CROSS-CHANNEL RESIDUAL PREDICTION 审中-公开
    跨渠道残留预测

    公开(公告)号：US20140219347A1

    公开(公告)日：2014-08-07

    申请号：US14244411

    申请日：2014-04-03

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

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

    IPC: H04N19/61

    CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

    Abstract: Systems, apparatus and methods are described including determining a prediction residual for a channel of video data; and determining, using the first channel's prediction residual, a prediction residual for a second channel of the video data. Further, a prediction residual for a third channel of the video data may be determined using the second channel's prediction residual.

    Abstract translation: 描述了系统，装置和方法，包括确定视频数据的信道的预测残差; 以及使用所述第一信道的预测残差来确定所述视频数据的第二信道的预测残差。 此外，可以使用第二信道的预测残差来确定视频数据的第三信道的预测残差。

    Histogram Segmentation Based Local Adaptive Filter for Video Encoding and Decoding
    15.
    发明申请
    Histogram Segmentation Based Local Adaptive Filter for Video Encoding and Decoding 有权
    用于视频编码和解码的基于直方图分割的局部自适应滤波器

    公开(公告)号：US20140086304A1

    公开(公告)日：2014-03-27

    申请号：US13991592

    申请日：2012-09-24

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

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

    IPC: H04N7/26

    CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/186 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

    Abstract: Reconstructed picture quality for a video codec system may be improved by categorizing reconstructed pixels into different histogram bins with histogram segmentation and then applying different filters on different bins. Histogram segmentation may be performed by averagely dividing the histogram into M bins or adaptively dividing the histogram into N bins based on the histogram characteristics. Here M and N may be a predefined, fixed, non-negative integer value or an adaptively generated value at encoder side and may be sent to decoder through the coded bitstream.

    Abstract translation: 通过将重建的像素分类为具有直方图分割的不同的直方图箱，然后在不同的箱上应用不同的过滤器，可以改进用于视频编解码器系统的重构图像质量。 直方图分割可以通过将直方图平均地划分成M个箱或者基于直方图特征将直方图自适应地划分成N个箱来执行。 这里M和N可以是编码器侧的预定义的，固定的，非负整数值或自适应产生的值，并且可以通过编码比特流发送到解码器。

    ADAPTIVE CONTRAST ADJUSTMENT TECHNIQUES
    16.
    发明申请
    ADAPTIVE CONTRAST ADJUSTMENT TECHNIQUES 有权
    自适应对比度调整技术

    公开(公告)号：US20120250988A1

    公开(公告)日：2012-10-04

    申请号：US13074257

    申请日：2011-03-29

    Applicant: Ya-Ti Peng ,  Yi-Jen Chiu

    Inventor： Ya-Ti Peng ,  Yi-Jen Chiu

    IPC: G06K9/00

    CPC classification number: G06T5/40 ,  G06K9/38 ,  G06T2207/10016 ,  G06T2207/10024

    Abstract: Techniques are disclosed involving contrast adjustment for images. For example, an input image is classified based on its pixel value characteristics, as expressed in an input brightness histogram. From such a classification, a target histogram distribution for a corresponding output image (i.e., a contrast-adjusted transformation of the input image) may be specified. With the target histogram of the output image specified, a transformation function may be derived that maps input image values to output image values. Moreover, transitions of such transformation functions may be smoothed. Such smoothing may provide advantages, such as a reduction in flickering associated with video data.

    Abstract translation: 公开了涉及图像的对比度调整的技术。 例如，输入图像根据输入亮度直方图所表示的像素值特性进行分类。 根据这样的分类，可以规定对应的输出图像的目标直方图分布（即输入图像的对比度调整变换）。 利用指定的输出图像的目标直方图，可以导出将输入图像值映射到输出图像值的变换函数。 此外，这种变换函数的转换可以被平滑化。 这种平滑可以提供诸如减少与视频数据相关联的闪烁的优点。

    Method and apparatus of content adaptive detailing filtering for digital pictures
    17.
    发明授权
    Method and apparatus of content adaptive detailing filtering for digital pictures 有权
    数字图像内容自适应细化滤波的方法和装置

    公开(公告)号：US07952647B2

    公开(公告)日：2011-05-31

    申请号：US11647023

    申请日：2006-12-27

    Applicant: Yi-Jen Chiu

    Inventor： Yi-Jen Chiu

    IPC: H04N5/21 ,  H04N5/208

    CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20192

    Abstract: According to one embodiment, a method is disclosed. The method includes receiving video data performing pre-filtering on the data, performing content analysis is applied to identify an area of the data, applying a two-dimensional (2-D) 2nd gradient operation to extract a high frequency component and normalizing the high frequency component related to high frequency information from a previous picture.

    Abstract translation: 根据一个实施例，公开了一种方法。 该方法包括接收对数据执行预滤波的视频数据，执行内容分析以识别数据的区域，应用二维（2-D）第二梯度操作来提取高频分量并使高标准化 与前一图像的高频信息相关的频率分量。

    METHODS AND SYSTEMS TO ESTIMATE MOTION BASED ON RECONSTRUCTED REFERENCE FRAMES AT A VIDEO DECODER
    18.
    发明申请
    METHODS AND SYSTEMS TO ESTIMATE MOTION BASED ON RECONSTRUCTED REFERENCE FRAMES AT A VIDEO DECODER 有权
    基于视频解码器上重构的参考帧估计运动的方法和系统

    公开(公告)号：US20110002389A1

    公开(公告)日：2011-01-06

    申请号：US12566823

    申请日：2009-09-25

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

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

    IPC: H04N7/26

    CPC classification number: H04N19/577 ,  H04N19/103 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61

    Abstract: Methods and systems to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. The ME process can be performed on sub-partitions of the input block, which may reduce the prediction error without increasing the amount of MV information in the bitstream. Decoder-side ME can be applied for the prediction of existing inter frame coding modes, and traditional ME or the decoder-side ME can be adaptively selected to predict a coding mode based on a rate distribution optimization (RDO) criterion.

    Abstract translation: 基于在B帧或视频解码器的P帧中的重建参考图像应用运动估计（ME）的方法和系统。 对于P帧，可以执行投影ME以获得当前输入块的运动矢量（MV）。 在B帧中，可以执行投射ME和镜ME两者以获得当前输入块的MV。 可以在输入块的子分区上执行ME处理，这可以在不增加比特流中的MV信息的量的情况下减少预测误差。 解码器端ME可以应用于现有的帧间编码模式的预测，并且传统的ME或解码器侧的ME可以被自适应地选择以基于速率分布优化（RDO）准则来预测编码模式。

    Techniques for motion estimation
    19.
    发明申请
    Techniques for motion estimation 审中-公开
    运动估计技术

    公开(公告)号：US20110002387A1

    公开(公告)日：2011-01-06

    申请号：US12657168

    申请日：2010-01-14

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

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

    IPC: H04N7/26

    CPC classification number: H04N19/57 ,  H04N19/44 ,  H04N19/61

    Abstract: Techniques are described that can be used to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. A metric an be used determining a metric for each pair of MV0 and MV1 that is found in the search path, where the metric is based on a combination of a first, second, and third metrics. The first metric is based on temporal frame correlation, a second metric is based on spatial neighbors of the reference blocks, and a third metric is based on the spatial neighbors of the current block.

    Abstract translation: 描述了可以用于基于B帧中的重建参考图像或视频解码器的P帧中的运动估计（ME）来应用的技术。 对于P帧，可以执行投影ME以获得当前输入块的运动矢量（MV）。 在B帧中，可以执行投射ME和镜ME两者以获得当前输入块的MV。 用于确定在搜索路径中找到的每对MV0和MV1的度量的度量，其中度量基于第一，第二和第三度量的组合。 第一度量基于时间帧相关，第二度量基于参考块的空间邻居，并且第三度量基于当前块的空间邻居。

    Video encoding techniques
    20.
    发明申请
    Video encoding techniques 有权
    视频编码技术

    公开(公告)号：US20100008417A1

    公开(公告)日：2010-01-14

    申请号：US12217805

    申请日：2008-07-09

    Applicant: Lidong Xu ,  Yi-Jen Chiu

    Inventor： Lidong Xu ,  Yi-Jen Chiu

    IPC: H04B1/66

    CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/147 ,  H04N19/17 ,  H04N19/46 ,  H04N19/61

    Abstract: Techniques are described that can be used to determine parameters of an adaptive Wiener filter to apply to a video region. The following parameters of the Wiener filter may be adjusted: coefficients, coefficient quantization, filter type, filter size, prediction mode, entropy encoding, and number of filter tables. The parameters associated with the lowest rate distortion cost of the encoder are selected for transmission with the encoded video. If not using adaptive Wiener filtering results in a lowest rate distortion cost, then adaptive Wiener filtering is not used for the video region. If using adaptive Wiener filtering results in a lowest rate distortion cost, then the parameters applied by the adaptive Wiener filtering that result in the lowest rate distortion cost are communicated with the filtered video region.

    Abstract translation: 描述了可以用于确定适用于视频区域的自适应维纳滤波器的参数的技术。 可以调整维纳滤波器的以下参数：系数，系数量化，滤波器类型，滤波器大小，预测模式，熵编码和滤波器表数。 选择与编码器的最低速率失真成本相关联的参数以便与编码视频一起传输。 如果不使用自适应维纳滤波导致最低速率失真成本，则视频区域不使用自适应维纳滤波。 如果使用自适应维纳滤波导致最低速率失真成本，则导致最低速率失真成本的自适应维纳滤波所应用的参数与滤波视频区域通信。

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