Guaranteed-Rate Tiled Image Data Compression
    4.
    发明申请
    Guaranteed-Rate Tiled Image Data Compression 有权
    保证速率的平铺图像数据压缩

    公开(公告)号:US20110206289A1

    公开(公告)日:2011-08-25

    申请号:US13024989

    申请日:2011-02-10

    IPC分类号: G06K9/36

    摘要: A method of compressing digital image data is provided that includes, for each image data block in a plurality of image data blocks in the digital image data, transforming image data in the image data block to convert the image data to a low-frequency coefficient and a plurality of high-frequency coefficients, computing a predicted low-frequency coefficient for the image data block based on at least one neighboring image data block in the plurality of image data blocks, computing a residual low-frequency coefficient based on the predicted low-frequency coefficient and the low-frequency coefficient, quantizing the plurality of high-frequency coefficients, and entropy coding the residual low-frequency coefficient and the quantized high-frequency coefficients.

    摘要翻译: 提供一种压缩数字图像数据的方法,包括对于数字图像数据中的多个图像数据块中的每个图像数据块,对图像数据块中的图像数据进行变换以将图像数据转换为低频系数, 多个高频系数,基于所述多个图像数据块中的至少一个相邻图像数据块计算所述图像数据块的预测低频系数,基于所述预测低频系数计算残留低频系数, 频率系数和低频系数,对多个高频系数进行量化,对剩余低频系数和量化高频系数进行熵编码。

    Guaranteed-rate tiled image data compression
    5.
    发明授权
    Guaranteed-rate tiled image data compression 有权
    保证速率的平铺图像数据压缩

    公开(公告)号:US08588536B2

    公开(公告)日:2013-11-19

    申请号:US13024989

    申请日:2011-02-10

    IPC分类号: G06K9/36

    摘要: A method of compressing digital image data is provided that includes, for each image data block in a plurality of image data blocks in the digital image data, transforming image data in the image data block to convert the image data to a low-frequency coefficient and a plurality of high-frequency coefficients, computing a predicted low-frequency coefficient for the image data block based on at least one neighboring image data block in the plurality of image data blocks, computing a residual low-frequency coefficient based on the predicted low-frequency coefficient and the low-frequency coefficient, quantizing the plurality of high-frequency coefficients, and entropy coding the residual low-frequency coefficient and the quantized high-frequency coefficients.

    摘要翻译: 提供一种压缩数字图像数据的方法,包括对于数字图像数据中的多个图像数据块中的每个图像数据块,对图像数据块中的图像数据进行变换以将图像数据转换为低频系数, 多个高频系数,基于所述多个图像数据块中的至少一个相邻图像数据块计算所述图像数据块的预测低频系数,基于所述预测低频系数计算残留低频系数, 频率系数和低频系数,对多个高频系数进行量化,对剩余低频系数和量化高频系数进行熵编码。

    Method and system for intracoding in video encoding
    6.
    发明授权
    Method and system for intracoding in video encoding 有权
    视频编码内编码的方法和系统

    公开(公告)号:US08885714B2

    公开(公告)日:2014-11-11

    申请号:US12982482

    申请日:2010-12-30

    摘要: A method of intra-coding blocks of pixels in a digital video sequence is provided that includes selecting a block transform of a plurality of block transforms according to a spatial prediction mode used in generating a block of pixel residual values from a block of pixels, wherein the block transform is based on a single directional transform matrix predetermined for the spatial prediction mode and is a same size as the block of pixel values, applying the block transform to the block of pixel residual values to generate transform coefficients of the residual pixel values, and entropy coding the generated transform coefficients.

    摘要翻译: 提供了一种对数字视频序列中的像素块进行帧内编码的方法,其包括根据用于从像素块生成像素残差块的空间预测模式来选择多个块变换的块变换,其中 块变换基于为空间预测模式预定的单一方向变换矩阵,并且具有与像素值相同的大小,将块变换应用于像素残差值块以产生残余像素值的变换系数, 并对所生成的变换系数进行熵编码。

    Sample Adaptive Offset (SAO) Parameter Signaling
    7.
    发明申请
    Sample Adaptive Offset (SAO) Parameter Signaling 审中-公开
    采样自适应偏移(SAO)参数信号

    公开(公告)号:US20130051454A1

    公开(公告)日:2013-02-28

    申请号:US13593973

    申请日:2012-08-24

    IPC分类号: H04N7/26

    摘要: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.

    摘要翻译: 提供了一种用于视频编码器中的采样自适应偏移(SAO)滤波和SAO参数信令的方法,其包括确定重构图像的最大编码单元(LCU)的SAO参数,其中SAO参数包括SAO滤波器类型的指示符和 多个SAO偏移量,根据SAO参数对重建图像应用SAO滤波,以及对编码视频比特流中的重构图像的每个LCU进行LCU特定SAO信息的熵编码,其中熵编码的LCU特定SAO信息用于 LCU与编码视频比特流中的LCU的熵编码数据进行交织。 确定SAO参数可以包括根据SAO预测协议确定对于每个LCU进行熵编码的LCU特定SAO信息。

    Reduced Complexity Adaptive Loop Filter (ALF) for Video Coding
    10.
    发明申请
    Reduced Complexity Adaptive Loop Filter (ALF) for Video Coding 审中-公开
    降低复杂度自适应环路滤波器(ALF)用于视频编码

    公开(公告)号:US20120177104A1

    公开(公告)日:2012-07-12

    申请号:US13348583

    申请日:2012-01-11

    IPC分类号: H04N7/26

    摘要: Methods and apparatus for adaptive loop filtering in video coding are provided. The adaptive loop filtering may be largest coding unit (LCU) based, may use adaptive loop filter types in which the vertical size of a filter type is less than the horizontal size, may use a predefined set of filter types in which the vertical size of the largest filter type in the set is less than the horizontal size of the largest filter type in the set, may use a single adaptive loop filter type, and/or may use a filter type that is a cross with a center shape of a size dependent on an aspect ratio of the cross.

    摘要翻译: 提供了视频编码中自适应环路滤波的方法和装置。 自适应环路滤波可以是基于最大编码单元(LCU),可以使用其中滤波器类型的垂直尺寸小于水平尺寸的自适应环路滤波器类型,可以使用预定义的一组滤波器类型,其中垂直尺寸 集合中最大的过滤器类型小于集合中最大过滤器类型的水平尺寸,可以使用单个自适应环路滤波器类型,和/或可以使用与尺寸为中心形状的交叉的过滤器类型 取决于十字架的纵横比。