METHOD AND APPARATUS FOR DETERMINING EXPECTED DISTORTION IN DECODED VIDEO BLOCKS
    1.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING EXPECTED DISTORTION IN DECODED VIDEO BLOCKS 失效
    用于确定解码视频块中预期失真的方法和装置

    公开(公告)号:US20100239015A1

    公开(公告)日:2010-09-23

    申请号:US12310277

    申请日:2007-08-21

    IPC分类号: H04N11/02

    摘要: There are provided methods and apparatus for determining expected distortion in decoded video blocks. An apparatus includes a distortion calculator for calculating an expected distortion for an image block, included in a picture of a video sequence and sent over a lossy channel, using a motion vector for the image block when the motion vector has a non-integer value. The distortion calculator calculates the expected distortion based upon a propagated distortion of at least two neighboring integer pixel positions in a reference picture with respect to the motion vector having the non-integer value. The image block is coded in an inter mode or a SKIP mode.

    摘要翻译: 提供了用于确定解码视频块中的预期失真的方法和装置。 一种设备包括:失真计算器,用于当运动矢量具有非整数值时,使用图像块的运动矢量来计算包含在视频序列的图像中并通过有损通道发送的图像块的预期失真。 失真计算器基于相对于具有非整数值的运动矢量的参考图像中的至少两个相邻整数像素位置的传播失真来计算预期失真。 图像块以帧间模式或SKIP模式编码。

    Method and apparatus for determining expected distortion in decoded video blocks
    2.
    发明授权
    Method and apparatus for determining expected distortion in decoded video blocks 失效
    用于确定解码视频块中的预期失真的方法和装置

    公开(公告)号:US08457202B2

    公开(公告)日:2013-06-04

    申请号:US12310277

    申请日:2007-08-21

    IPC分类号: H04N7/26

    摘要: There are provided methods and apparatus for determining expected distortion in decoded video blocks. An apparatus includes a distortion calculator for calculating an expected distortion for an image block, included in a picture of a video sequence and sent over a lossy channel, using a motion vector for the image block when the motion vector has a non-integer value. The distortion calculator calculates the expected distortion based upon a propagated distortion of at least two neighboring integer pixel positions in a reference picture with respect to the motion vector having the non-integer value. The image block is coded in an inter mode or a SKIP mode.

    摘要翻译: 提供了用于确定解码视频块中的预期失真的方法和装置。 一种设备包括:失真计算器,用于当运动矢量具有非整数值时,使用图像块的运动矢量来计算包含在视频序列的图像中并通过有损通道发送的图像块的预期失真。 失真计算器基于相对于具有非整数值的运动矢量的参考图像中的至少两个相邻整数像素位置的传播失真来计算预期失真。 图像块以帧间模式或SKIP模式编码。

    Video error detection technique using a CRC parity code
    5.
    发明授权
    Video error detection technique using a CRC parity code 有权
    视频错误检测技术使用CRC校验码

    公开(公告)号:US09204167B2

    公开(公告)日:2015-12-01

    申请号:US11795436

    申请日:2005-01-24

    IPC分类号: H04N19/61

    CPC分类号: H04N19/61

    摘要: Detection of errors in a video stream occurs by calculating an error detection code, such as a Cyclic Redundancy Check (CRC) code over a group of not more than N macroblocks in a slice of the stream prior and after transmission, where N is an integer greater than zero but less than the total number of macroblocks in the slice. A comparison of the error detection codes reveals whether any errors exist in the group of macroblocks. If the group has no errors, normal decoding occurs. If the macroblock group has an error, then the macroblock group, and the remaining blocks in the slice undergo error concealment.

    摘要翻译: 通过在传输之前和之后的流中的不超过N个宏块的组中计算诸如循环冗余校验(CRC)码的错误检测码来检测视频流中的错误,其中N是整数 大于零但小于片中宏块的总数。 错误检测码的比较显示在宏块组中是否存在任何错误。 如果组没有错误,则会发生正常解码。 如果宏块组具有错误,则宏块组以及片中的剩余块经历错误隐藏。

    Methods and apparatus for texture compression using patch-based sampling texture synthesis
    8.
    发明授权
    Methods and apparatus for texture compression using patch-based sampling texture synthesis 有权
    使用基于贴片的采样纹理合成的纹理压缩的方法和装置

    公开(公告)号:US08577158B2

    公开(公告)日:2013-11-05

    申请号:US12737207

    申请日:2008-06-27

    IPC分类号: G06K9/36 G06K9/46 G09G5/00

    CPC分类号: H04N19/593

    摘要: Methods and apparatus are provided for texture compression using patch-based sampling texture synthesis. An apparatus includes an encoder for encoding texture for a picture by synthesizing the texture. The encoder performs texture synthesis using a patch-based sampling method, thus determining “displacement vectors” indicating positions of patches in an input sample texture which are to be synthesized. At the encoder, both the input sample texture and information representing the “displacement vectors” are coded. At the decoder, the new patches are generated by directly using the “displacement vectors”.

    摘要翻译: 提供了使用基于贴片的采样纹理合成的纹理压缩的方法和装置。 一种装置包括通过合成纹理来编码图像纹理的编码器。 编码器使用基于贴片的采样方法进行纹理合成,从而确定指示要被合成的输入样本纹理中的贴片位置的“位移矢量”。 在编码器处,输入样本纹理和表示“位移矢量”的信息都被编码。 在解码器处,通过直接使用“位移矢量”生成新的补丁。

    Multipass video rate control to match sliding window channel constraints
    9.
    发明授权
    Multipass video rate control to match sliding window channel constraints 有权
    多通道视频速率控制匹配滑动窗口通道约束

    公开(公告)号:US08542733B2

    公开(公告)日:2013-09-24

    申请号:US10561361

    申请日:2004-03-01

    IPC分类号: H04N7/12

    摘要: An encoder and corresponding method are disclosed for performing video rate control to meet network traffic model restrictions, including pre-encoding the sequence of pictures for each of a plurality of quantization parameter values, selecting for each picture of the sequence one of the plurality of quantization parameter values responsive to the quantization parameter values and bitrate operating points of the neighboring pictures in the sliding time window, and encoding each picture of the sequence using the quantization parameter value selected for that picture.

    摘要翻译: 公开了一种用于执行视频速率控制以满足网络流量模型限制的编码器和相应方法,包括对多个量化参数值中的每一个对图像序列进行预编码,为多个量化中的一个序列的每个图像选择 响应于滑动时间窗口中的相邻画面的量化参数值和比特率工作点的参数值,以及使用为该画面选择的量化参数值来对序列的每个画面进行编码。