Flexible range reduction
    1.
    发明申请
    Flexible range reduction 有权
    弹性范围缩小

    公开(公告)号:US20050063471A1

    公开(公告)日:2005-03-24

    申请号:US10989702

    申请日:2004-11-15

    摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    FLEXIBLE RANGE REDUCTION
    2.
    发明申请
    FLEXIBLE RANGE REDUCTION 有权
    灵活范围减少

    公开(公告)号:US20110280303A1

    公开(公告)日:2011-11-17

    申请号:US13191335

    申请日:2011-07-26

    IPC分类号: H04N7/28 H04N11/02

    摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    Flexible range reduction
    3.
    发明授权
    Flexible range reduction 有权
    弹性范围缩小

    公开(公告)号:US08014450B2

    公开(公告)日:2011-09-06

    申请号:US10989702

    申请日:2004-11-15

    IPC分类号: H04N7/12

    摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    Flexible range reduction
    4.
    发明授权
    Flexible range reduction 有权
    弹性范围缩小

    公开(公告)号:US08855202B2

    公开(公告)日:2014-10-07

    申请号:US13191335

    申请日:2011-07-26

    摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    Slice-layer in video codec
    7.
    发明授权
    Slice-layer in video codec 有权
    视频编解码器中的切片层

    公开(公告)号:US07162093B2

    公开(公告)日:2007-01-09

    申请号:US10933960

    申请日:2004-09-03

    IPC分类号: G06K9/36 G06K9/46

    摘要: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

    摘要翻译: 视频编码器/解码器利用提供可独立解码的部分图像单元的双向串行语法,其可以是包含一个或多个连续的宏块行(称为切片)的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制(例如,指定切片层的开始宏块行的语法元素)进行编码,以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测,重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构,而与图像的其他区域中的错误无关。

    Slice-layer in video codec
    8.
    发明申请
    Slice-layer in video codec 有权
    视频编解码器中的切片层

    公开(公告)号:US20050053158A1

    公开(公告)日:2005-03-10

    申请号:US10933960

    申请日:2004-09-03

    摘要: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

    摘要翻译: 视频编码器/解码器利用提供独立可解码的部分图像单元的双向串行语法,其可以是包含一个或多个连续的宏块行(称为切片)的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制(例如,指定切片层的开始宏块行的语法元素)进行编码,以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测,重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构,而与图像的其他区域中的错误无关。

    Signaling coding and display options in entry point headers
    10.
    发明授权
    Signaling coding and display options in entry point headers 有权
    入口点标题中的信号编码和显示选项

    公开(公告)号:US07924921B2

    公开(公告)日:2011-04-12

    申请号:US10989845

    申请日:2004-11-15

    摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).

    摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。