Codeword space reduction for intra chroma mode signaling for HEVC
    1.
    发明授权
    Codeword space reduction for intra chroma mode signaling for HEVC 有权
    用于HEVC的色度模式信号的代码字空间减少

    公开(公告)号:US09232227B2

    公开(公告)日:2016-01-05

    申请号:US13227732

    申请日:2011-09-08

    摘要: Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 7 different modes defined in AVC: vertical, horizontal, DC, diagonal directions, and “same as luma”. Statistics show that the “same as luma” mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard.

    摘要翻译: 帧内预测用于诸如AVC的最先进的视频编码标准。 帧内预测模式被编码到比特流中。 亮度和色度分量可能具有不同的预测模式。 对于色度分量,在AVC中定义了7种不同的模式:垂直,水平,直流,对角线方向和“与亮度相同”。 统计显示,经常使用“与亮度相同”的方式,但在AVC中,在熵编码中,该模式比其他模式更多的位进行编码,因此编码效率降低。 因此,用于色度帧内信令的修正二值化/码字分配能够用于下一代视频编码标准中的高效率视频编码(HEVC)。

    CODEWORD SPACE REDUCTION FOR INTRA CHROMA MODE SIGNALING FOR HEVC
    2.
    发明申请
    CODEWORD SPACE REDUCTION FOR INTRA CHROMA MODE SIGNALING FOR HEVC 有权
    用于HEVC的内部色彩模式信号的编码空间减少

    公开(公告)号:US20120183054A1

    公开(公告)日:2012-07-19

    申请号:US13227732

    申请日:2011-09-08

    IPC分类号: H04N7/32

    摘要: Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 7 different modes defined in AVC: vertical, horizontal, DC, diagonal directions, and “same as luma”. Statistics show that the “same as luma” mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard.

    摘要翻译: 帧内预测用于诸如AVC的最先进的视频编码标准。 帧内预测模式被编码到比特流中。 亮度和色度分量可能具有不同的预测模式。 对于色度分量,在AVC中定义了7种不同的模式:垂直,水平,直流,对角线方向和“与亮度相同”。 统计显示,经常使用“与亮度相同”的方式,但是在AVC中,在熵编码中,该模式比其他模式更多的位进行编码,因此编码效率降低。 因此,用于色度帧内信令的修正二值化/码字分配能够用于下一代视频编码标准中的高效率视频编码(HEVC)。

    PARAMETRIC LOOP FILTER
    3.
    发明申请
    PARAMETRIC LOOP FILTER 有权
    参数环路滤波器

    公开(公告)号:US20120183050A1

    公开(公告)日:2012-07-19

    申请号:US13038182

    申请日:2011-03-01

    IPC分类号: H04N7/26 H04N7/32

    摘要: A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw//) and bandwidth perpendicular to the direction (bw⊥). The filter to be used is able to be derived from local image characteristics or predicted from neighboring blocks. The parametric loop filter utilizes much less computation, delay and memory access at the encoder. Fixed coefficients allow fast implementation of filtering at the decoder. A parametric loop filter is able to be combined with online training to further improve performance, by allowing one or more fixed filters to be replaced with online trained Wiener filters.

    摘要翻译: 参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪像。 滤波器经过离线预编程和硬连线到编码器和解码器中,而不是在线训练的维纳滤波器。 可以使用一个或多个参数来指定滤波器,包括:沿方向(bw //)的方向,带宽和垂直于方向(bw⊥)的带宽。 要使用的滤波器能够从本地图像特征导出或从相邻块预测。 参数环路滤波器在编码器处使用更少的计算,延迟和存储器访问。 固定系数允许在解码器处快速实现滤波。 参数环路滤波器能够与在线培训相结合,以进一步提高性能,允许使用在线训练的维纳滤波器替换一个或多个固定滤波器。

    Parametric loop filter
    4.
    发明授权
    Parametric loop filter 有权
    参数环路滤波器

    公开(公告)号:US08849053B2

    公开(公告)日:2014-09-30

    申请号:US13038182

    申请日:2011-03-01

    摘要: A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw//) and bandwidth perpendicular to the direction (bw⊥). The filter to be used is able to be derived from local image characteristics or predicted from neighboring blocks. The parametric loop filter utilizes much less computation, delay and memory access at the encoder. Fixed coefficients allow fast implementation of filtering at the decoder. A parametric loop filter is able to be combined with online training to further improve performance, by allowing one or more fixed filters to be replaced with online trained Wiener filters.

    摘要翻译: 参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪像。 滤波器经过离线预编程和硬连线到编码器和解码器中,而不是在线训练的维纳滤波器。 可以使用一个或多个参数来指定滤波器,包括:沿方向(bw //)的方向,带宽和垂直于方向(bw⊥)的带宽。 要使用的滤波器能够从本地图像特征导出或从相邻块预测。 参数环路滤波器在编码器处使用更少的计算,延迟和存储器访问。 固定系数允许在解码器处快速实现滤波。 参数环路滤波器能够与在线培训相结合,以进一步提高性能,允许使用在线训练的维纳滤波器替换一个或多个固定滤波器。

    Methods for delta-QP signaling for decoder parallelization in HEVC
    5.
    发明授权
    Methods for delta-QP signaling for decoder parallelization in HEVC 有权
    用于在HEVC中解码器并行化的delta-QP信令的方法

    公开(公告)号:US08582646B2

    公开(公告)日:2013-11-12

    申请号:US13038090

    申请日:2011-03-01

    申请人: Wei Liu Lina Dong

    发明人: Wei Liu Lina Dong

    IPC分类号: H04N7/12

    摘要: By implementing a new bitstream for a Delta-Quantization Parameter (DQP), a decoder is able to implement parallel decoding of multiple coding units within a largest coding unit. In some embodiments, the DQP is placed immediately after the mode information of the first coding unit. In some embodiments, the DQP is placed after the mode information of the first non-skipped coding unit. In some embodiments, the DQP is placed after the first non-zero coded block flag.

    摘要翻译: 通过实现用于增量量化参数(DQP)的新比特流,解码器能够在最大编码单元内实现多个编码单元的并行解码。 在一些实施例中,DQP紧接在第一编码单元的模式信息之后。 在一些实施例中,将DQP置于第一非跳过编码单元的模式信息之后。 在一些实施例中,DQP被置于第一非零编码块标志之后。

    Rate control for stream switching
    6.
    发明授权
    Rate control for stream switching 有权
    流切换速率控制

    公开(公告)号:US08055785B2

    公开(公告)日:2011-11-08

    申请号:US12561008

    申请日:2009-09-16

    IPC分类号: G06F15/16

    摘要: An apparatus comprising a first node configured to communicate with a second node, wherein the first node is configured to receive a first stream from the second node, receive a bridging stream from the second node, and receive the second stream from the second node, and wherein the bridging stream has a lower bit-rate than the second stream. Included is an apparatus comprising at least one processor configured to implement a method comprising transmitting a first stream at a first time, transmitting a bridging stream that has a bit-rate greater than the first stream and less than the second stream at a second time, and transmitting the second stream at a third time.

    摘要翻译: 一种装置,包括被配置为与第二节点通信的第一节点,其中所述第一节点被配置为从所述第二节点接收第一流,从所述第二节点接收桥接流,并从所述第二节点接收所述第二流,以及 其中所述桥接流具有比所述第二流更低的比特率。 包括的装置包括至少一个处理器,其被配置为实现包括在第一时间发送第一流的方法,在第二时间发送具有大于第一流并且小于第二流的比特率的桥接流, 以及在第三时间发送所述第二流。

    Simplifying parametric loop filters
    7.
    发明授权
    Simplifying parametric loop filters 有权
    简化参数环路滤波器

    公开(公告)号:US08917950B2

    公开(公告)日:2014-12-23

    申请号:US13038051

    申请日:2011-03-01

    申请人: Wei Liu Lina Dong

    发明人: Wei Liu Lina Dong

    IPC分类号: G06K9/40 H04N19/82 H04N19/86

    摘要: A simplified parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The simplified parametric loop filter uses the parameters such as direction and bandwidth to uniquely identify a fixed filter from the set of filters. The simplified parametric loop filter implements symmetry between filters, symmetry within each filter, unity DC gain and zero-forcing to 1) reduce the storage space in memorizing the fixed filters, and 2) reduce the computational complexity for performing filtering.

    摘要翻译: 简化的参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪影。 简化的参数环路滤波器使用诸如方向和带宽的参数从该组滤波器中唯一地识别固定滤波器。 简化的参数环路滤波器实现了滤波器之间的对称性,每个滤波器内的对称性,单位直流增益和零强制1)减少存储固定滤波器的存储空间,2)降低执行滤波的计算复杂度。

    METHODS FOR DELTA-QP SIGNALING FOR DECODER PARALLELIZATION IN HEVC
    8.
    发明申请
    METHODS FOR DELTA-QP SIGNALING FOR DECODER PARALLELIZATION IN HEVC 有权
    用于解码器并行化在HEVC中的DELTA-QP信号的方法

    公开(公告)号:US20120183049A1

    公开(公告)日:2012-07-19

    申请号:US13038090

    申请日:2011-03-01

    申请人: Wei Liu Lina Dong

    发明人: Wei Liu Lina Dong

    IPC分类号: H04N7/12

    摘要: By implementing a new bitstream for a Delta-Quantization Parameter (DQP), a decoder is able to implement parallel decoding of multiple coding units within a largest coding unit. In some embodiments, the DQP is placed immediately after the mode information of the first coding unit. In some embodiments, the DQP is placed after the mode information of the first non-skipped coding unit. In some embodiments, the DQP is placed after the first non-zero coded block flag.

    摘要翻译: 通过实现用于增量量化参数(DQP)的新比特流,解码器能够在最大编码单元内实现多个编码单元的并行解码。 在一些实施例中,DQP紧接在第一编码单元的模式信息之后。 在一些实施例中,将DQP置于第一非跳过编码单元的模式信息之后。 在一些实施例中,DQP被置于第一非零编码块标志之后。

    SIMPLIFYING PARAMETRIC LOOP FILTERS
    9.
    发明申请
    SIMPLIFYING PARAMETRIC LOOP FILTERS 有权
    简化参数环路滤波器

    公开(公告)号:US20120183081A1

    公开(公告)日:2012-07-19

    申请号:US13038051

    申请日:2011-03-01

    申请人: Wei Liu Lina Dong

    发明人: Wei Liu Lina Dong

    IPC分类号: H04N7/26

    摘要: A simplified parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The simplified parametric loop filter uses the parameters such as direction and bandwidth to uniquely identify a fixed filter from the set of filters. The simplified parametric loop filter implements symmetry between filters, symmetry within each filter, unity DC gain and zero-forcing to 1) reduce the storage space in memorizing the fixed filters, and 2) reduce the computational complexity for performing filtering.

    摘要翻译: 简化的参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪影。 简化的参数环路滤波器使用诸如方向和带宽的参数从该组滤波器中唯一地识别固定滤波器。 简化的参数环路滤波器实现了滤波器之间的对称性,每个滤波器内的对称性,单位直流增益和零强制1)减少存储固定滤波器的存储空间,2)降低执行滤波的计算复杂度。

    Rate Control for Stream Switching
    10.
    发明申请
    Rate Control for Stream Switching 有权
    流切换速率控制

    公开(公告)号:US20100070645A1

    公开(公告)日:2010-03-18

    申请号:US12561008

    申请日:2009-09-16

    IPC分类号: G06F15/16

    摘要: An apparatus comprising a first node configured to communicate with a second node, wherein the first node is configured to receive a first stream from the second node, receive a bridging stream from the second node, and receive the second stream from the second node, and wherein the bridging stream has a lower bit-rate than the second stream. Included is an apparatus comprising at least one processor configured to implement a method comprising transmitting a first stream at a first time, transmitting a bridging stream that has a bit-rate greater than the first stream and less than the second stream at a second time, and transmitting the second stream at a third time.

    摘要翻译: 一种装置,包括被配置为与第二节点通信的第一节点,其中所述第一节点被配置为从所述第二节点接收第一流,从所述第二节点接收桥接流,并从所述第二节点接收所述第二流,以及 其中所述桥接流具有比所述第二流更低的比特率。 包括的装置包括至少一个处理器,其被配置为实现包括在第一时间发送第一流的方法,在第二时间发送具有大于第一流并且小于第二流的比特率的桥接流, 以及在第三时间发送所述第二流。