Learned transform and compressive sensing for video coding
    71.
    发明授权
    Learned transform and compressive sensing for video coding 有权
    学习视频编码的变换和压缩感知

    公开(公告)号:US09313465B2

    公开(公告)日:2016-04-12

    申请号:US13700882

    申请日:2011-06-06

    摘要: Methods and apparatus are provided for video encoding and decoding with learned transform and compressive sensing. An apparatus includes a video encoder for encoding an image block in a picture by determining from a training data set an adaptive transform for transforming a signal capable of representing the image block into zero coefficients and non-zero coefficients, reconstructing the image block in a pixel domain to obtain a reconstructed version of the image block by minimizing a number of the non-zero coefficients in a transform domain corresponding to the transform responsive to information of the signal and a prediction of the image block, and incorporating the reconstructed version of the image block into a coding mode that is absent from any video coding standards and video coding recommendations.

    摘要翻译: 提供了用于具有学习的变换和压缩感测的视频编码和解码的方法和装置。 一种装置包括一个视频编码器,用于通过从训练数据集确定用于将能够表示图像块的信号变换为零系数和非零系数的自适应变换来对图像中的图像块进行编码,在像素中重建图像块 域,以通过使响应于信号的信息和图像块的预测的变换对应的变换域中的非零系数的数量最小化来获得图像块的重建版本,并且结合图像的重建版本 嵌入到任何视频编码标准和视频编码建议中都不存在的编码模式。

    Method and apparatus for joint quantization parameter adjustment
    72.
    发明申请
    Method and apparatus for joint quantization parameter adjustment 有权
    联合量化参数调整的方法和装置

    公开(公告)号:US20100290524A1

    公开(公告)日:2010-11-18

    申请号:US12800263

    申请日:2010-05-12

    IPC分类号: H04N7/32

    摘要: The present principles provides a method and apparatus for jointly adjusting the rounding offset and the quantization step size on a macroblock level to improve the perceptual quality of the fine details of the encoded image. In one implementation, the content of the pictures is analyzed and the smooth regions are identified. A quantization step size value for the picture is initially defined and a rounding offset is adaptively assigned to each macroblock based on the content characteristics. The quantization step size is then calculated for the a particular macroblock according to another content characteristic of the macroblock such that the encoding of the particular macroblock is performed in response to the calculated quantization step size and the rounding offset value of the first block.

    摘要翻译: 本发明提供了一种用于在宏块级别上联合调整舍入偏移量和量化步长的方法和装置,以提高编码图像的精细细节的感知质量。 在一个实现中,分析图像的内容并且识别平滑区域。 最初定义图像的量化步长值,并且基于内容特征对每个宏块自适应地分配舍入偏移。 然后根据宏块的另一内容特性,针对特定宏块计算量化步长,使得响应于计算出的量化步长和第一块的舍入偏移值执行特定宏块的编码。

    Method and apparatus for fast mode decision for interframes
    74.
    发明授权
    Method and apparatus for fast mode decision for interframes 有权
    用于内部帧的快速模式决定的方法和装置

    公开(公告)号:US08385416B2

    公开(公告)日:2013-02-26

    申请号:US11662505

    申请日:2005-09-14

    IPC分类号: H04N7/12

    摘要: There is disclosed a video encoder and corresponding method for encoding video data for an image block. The video encoder performs a mode decision by performing initial motion estimation on only a subset of possible block sizes to output motion information corresponding thereto, and determining, based upon the motion information corresponding to only the subset of possible of block sizes and upon other image-related analysis data, whether other block sizes are to be evaluated.

    摘要翻译: 公开了用于编码图像块的视频数据的视频编码器和相应的方法。 视频编码器通过仅对可能的块大小的子集执行初始运动估计来执行模式决定,以输出与其对应的运动信息,并且基于仅对应于块大小的可能的子集的运动信息, 相关分析数据,是否评估其他块大小。

    Method and apparatus for fast mode decision of B-frames in a video encoder
    75.
    发明授权
    Method and apparatus for fast mode decision of B-frames in a video encoder 有权
    用于视频编码器中B帧的快速模式决定的方法和装置

    公开(公告)号:US08155191B2

    公开(公告)日:2012-04-10

    申请号:US11666780

    申请日:2005-11-02

    IPC分类号: H04N11/04

    摘要: There are provided video encoders and corresponding methods for performing fast mode decision of B-frames. A video encoder for encoding video data for a B slice that is divisible into macroblocks includes an encoder (OO) for performing mode selection when encoding a current macroblock in the B slice by counting a number of neighboring macroblocks in the B slice coded in a DIRECT mode, and only checking one of the DIRECT MODE or a 16×16 mode for the current macroblock when the number of neighboring macroblocks coded in the DIRECT mode exceeds a predetermined threshold.

    摘要翻译: 提供视频编码器和用于执行B帧的快速模式决定的相应方法。 用于对可分割为宏块的B片的视频数据进行编码的视频编码器包括:编码器(OO),用于通过对以DIRECT编码的B片段中的相邻宏块的数量进行计数来对B片中的当前宏块进行编码时执行模式选择 模式,并且当以DIRECT模式编码的相邻宏块的数量超过预定阈值时,仅检查当前宏块的DIRECT MODE或16×16模式之一。

    Method and Apparatus for Fast Mode Decision of B-Frames in a Video Encoder
    76.
    发明申请
    Method and Apparatus for Fast Mode Decision of B-Frames in a Video Encoder 有权
    用于视频编码器中B帧的快速模式决定的方法和装置

    公开(公告)号:US20080008242A1

    公开(公告)日:2008-01-10

    申请号:US11666780

    申请日:2005-11-02

    IPC分类号: H04N11/02

    摘要: There are provided video encoders and corresponding methods for performing fast mode decision of B-frames. A video encoder for encoding video data for a B slice that is divisible into macroblocks includes an encoder (OO) for performing mode selection when encoding a current macroblock in the B slice by counting a number of neighboring macroblocks in the B slice coded in a DIRECT mode, and only checking one of the DIRECT MODE or a 16×16 mode for the current macroblock when the number of neighboring macroblocks coded in the DIRECT mode exceeds a predetermined threshold.

    摘要翻译: 提供视频编码器和用于执行B帧的快速模式决定的相应方法。 用于对可分割为宏块的B片的视频数据进行编码的视频编码器包括:编码器(OO),用于通过对以DIRECT编码的B片段中的相邻宏块的数量进行计数来对B片中的当前宏块进行编码时执行模式选择 模式,并且当以直接模式编码的相邻宏块的数量超过预定阈值时,仅检查当前宏块的DIRECT MODE或16×16模式之一。

    Method And Apparatus For Fast Mode Dicision For Interframes
    77.
    发明申请
    Method And Apparatus For Fast Mode Dicision For Interframes 有权
    用于帧间快速模式识别的方法和装置

    公开(公告)号:US20080117976A1

    公开(公告)日:2008-05-22

    申请号:US11662505

    申请日:2005-09-14

    IPC分类号: H04N7/26

    摘要: There is disclosed a video encoder and corresponding method for encoding video data for an image block. The video encoder performs a mode decision by performing initial motion estimation on only a subset of possible block sizes to output motion information corresponding thereto, and determining, based upon the motion information corresponding to only the subset of possible of block sizes and upon other image-related analysis data, whether other block sizes are to be evaluated.

    摘要翻译: 公开了用于编码图像块的视频数据的视频编码器和相应的方法。 视频编码器通过仅对可能的块大小的子集执行初始运动估计来执行模式决定,以输出与其对应的运动信息,并且基于仅对应于块大小的可能的子集的运动信息, 相关分析数据,是否评估其他块大小。

    METHODS AND APPARATUS FOR IMPROVED QUANTIZATION ROUNDING OFFSET ADJUSTMENT FOR VIDEO ENCODING AND DECODING
    79.
    发明申请
    METHODS AND APPARATUS FOR IMPROVED QUANTIZATION ROUNDING OFFSET ADJUSTMENT FOR VIDEO ENCODING AND DECODING 有权
    用于改进视频编码和解码的改进量化偏移调整的方法和装置

    公开(公告)号:US20120051421A1

    公开(公告)日:2012-03-01

    申请号:US13319779

    申请日:2010-05-12

    IPC分类号: H04N7/26

    摘要: There are provided methods and apparatus for improved quantization rounding offset adjustment for video encoding and decoding. An apparatus includes a video encoder for encoding an input coding unit by determining a residual for the input coding unit corresponding to a difference between the input coding unit and a reference coding unit, applying a transform to the residual to obtain at least one transform coefficient, and quantizing the at least one transform coefficient by selecting a particular quantization step size and a rounding offset.

    摘要翻译: 提供了用于改进用于视频编码和解码的量化舍入偏移调整的方法和装置。 一种装置,包括:视频编码器,用于通过确定与输入编码单元和参考编码单元之间的差异对应的输入编码单元的残差来对输入编码单元进行编码,向残差应用变换以获得至少一个变换系数, 以及通过选择特定的量化步长和舍入偏移量化所述至少一个变换系数。