利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.013 秒)

    Dynamic dithering for video compression
    1.
    发明授权
    Dynamic dithering for video compression 有权
    用于视频压缩的动态抖动

    公开(公告)号：US08270498B2

    公开(公告)日：2012-09-18

    申请号：US12463859

    申请日：2009-05-11

    申请人： Gianluca Filippini ,  Hsi-Jung Wu ,  James Oliver Normile ,  Xiaojin Shi ,  Xiaosong Zhou ,  Ionut Hristodorescu

    发明人： Gianluca Filippini ,  Hsi-Jung Wu ,  James Oliver Normile ,  Xiaojin Shi ,  Xiaosong Zhou ,  Ionut Hristodorescu

    IPC分类号： H04N7/12 ,  G06K9/40

    CPC分类号： H04N19/90 ,  H04N19/124 ,  H04N19/136 ,  H04N19/154 ,  H04N19/86

    摘要： A method and device for dithering video from a decoder. The method and device provide: selecting a segment of video frames from the video; computing a noise map for the segment of the video, the noise map computed from differences among pixels selected from spatially-distributed sampling patterns in the segment; determining contours of quantization artifacts within the video frame based on the noise map and a histogram of pixel values in the video frame; computing a gradient measurement of pixel values along the contours; identifying regions along the contours of quantization artifacts to apply dithering based on the noise map and the gradient measurement; determining a dithering strength based on the noise map and the gradient measurement; and applying dithering noise to the identified regions at the determined dithering strength.

    摘要翻译： 一种从解码器抖动视频的方法和装置。 该方法和设备提供：从视频中选择一段视频帧; 计算视频段的噪声映射，根据从片段中的空间分布采样模式中选择的像素之间的差异计算的噪声图; 基于噪声图和视频帧中的像素值的直方图确定视频帧内的量化伪像的轮廓; 计算沿着轮廓的像素值的梯度测量; 识别沿着量化伪影轮廓的区域，以基于噪声图和梯度测量应用抖动; 基于噪声图和梯度测量确定抖动强度; 并以确定的抖动强度对所识别的区域施加抖动噪声。

    Post-processing for decoder complexity scalability
    3.
    发明授权
    Post-processing for decoder complexity scalability 有权
    后处理解码器复杂度可扩展性

    公开(公告)号：US08731064B2

    公开(公告)日：2014-05-20

    申请号：US11530810

    申请日：2006-09-11

    申请人： Hsi-Jung Wu ,  Ionut Hristodorescu ,  Christian L. Duvivier ,  James Normile ,  Jochen Christian Schmidt ,  Chris Yoochang Chung

    发明人： Hsi-Jung Wu ,  Ionut Hristodorescu ,  Christian L. Duvivier ,  James Normile ,  Jochen Christian Schmidt ,  Chris Yoochang Chung

    IPC分类号： H04N7/12 ,  H04N7/50 ,  H04N7/26

    CPC分类号： H04N7/26946 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

    摘要： Systems, apparatuses and methods whereby a base coded video signal is provided to a decoder having a set of post-processing stages. The base coded video signal can be decoded to produce a base decoded video signal. Post-processing of the base decoded video signal can be used to produce an enhanced quality video output signal. Application of a post-processing stage can be implemented according to the capabilities of the decoder and/or the instantaneous operating parameters of the decoder and/or characteristics of a display. A control signal, communicated over a dedicated channel separate from the base coded video signal, can be used initiate and/or aid implementation of a post-processing stage. The control signal can also provide information to assist/manage the decoding of the base coded video signal. The use of additional post-processing stages increases the complexity of an overall decoding process while improving the quality of a resulting reproduced video sequence.

    摘要翻译： 将基本编码视频信号提供给具有一组后处理级的解码器的系统，装置和方法。 基编码视频信号可被解码以产生基本解码视频信号。 可以使用基本解码视频信号的后处理来产生增强的质量视频输出信号。 后处理阶段的应用可以根据解码器的能力和/或解码器的瞬时操作参数和/或显示器的特性来实现。 可以使用通过与基本编码视频信号分开的专用信道传送的控制信号来启动和/或辅助后处理阶段的实现。 控制信号还可以提供信息来辅助/管理基本编码视频信号的解码。 使用额外的后处理级增加了整体解码过程的复杂性，同时提高了所得到的再现视频序列的质量。

    POWER SAVING DECODER ARCHITECTURE
    4.
    发明申请
    POWER SAVING DECODER ARCHITECTURE 有权
    节电解码器架构

    公开(公告)号：US20090092184A1

    公开(公告)日：2009-04-09

    申请号：US11934394

    申请日：2007-11-02

    申请人： Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Jim NORMILE

    发明人： Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Jim NORMILE

    IPC分类号： H04N11/02

    CPC分类号： H04N19/436 ,  H04N19/103 ,  H04N19/156 ,  H04N19/176 ,  H04N19/42 ,  H04N19/44 ,  H04N19/61 ,  H04N19/88

    摘要： A method and system are provided for decoding coded video data by turning off or not loading at least one functional unit or functional subunit of the decoder while decoding a portion of the coded video data. A schedule may be created prior to substantive decoding and then the schedule may be used to decode coded video data. The coded video data may be reordered based on the functional units or subunits the portions of the coded video data need for decoding. The portions of the coded video data are reordered into their original order in an output buffer after being decoded. The decoder may determine which functional units or subunits are needed for decoding based on administration information included with the coded video data. The decoder may decode portions of the coded video data in parallel.

    摘要翻译： 提供了一种方法和系统，用于通过在对一部分编码视频数据进行解码的同时关闭或不加载解码器的至少一个功能单元或功能子单元来解码编码的视频数据。 可以在实质性解码之前创建调度，然后可以使用调度来解码经编码的视频数据。 编码视频数据可以基于编码视频数据部分需要解码的功能单元或子单元重新排序。 在解码之后，将编码的视频数据的部分重新排序成输出缓冲器中的原始顺序。 解码器可以基于包括在编码视频数据中的管理信息来确定需要哪个功能单元或子单元进行解码。 解码器可以并行地解码编码视频数据的部分。

    VIDEO CODER PROVIDING IMPROVED VISUAL QUALITY DURING USE OF HETEROGENEOUS CODING MODES
    6.
    发明申请
    VIDEO CODER PROVIDING IMPROVED VISUAL QUALITY DURING USE OF HETEROGENEOUS CODING MODES 审中-公开
    视频编码器在使用异构编码模式时提供改进的视觉质量

    公开(公告)号：US20110038416A1

    公开(公告)日：2011-02-17

    申请号：US12541773

    申请日：2009-08-14

    申请人： Xiaosong ZHOU ,  Ionut HRISTODORESCU ,  Hsi-Jung WU ,  Xiaojin SHI

    发明人： Xiaosong ZHOU ,  Ionut HRISTODORESCU ,  Hsi-Jung WU ,  Xiaojin SHI

    IPC分类号： H04N11/04

    CPC分类号： H04N19/194 ,  H04N19/103 ,  H04N19/109 ,  H04N19/11 ,  H04N19/154 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61

    摘要： A video coding system reduces perceptible artifacts introduced to coded video due to selection of disparate coding modes among adjacent partitions of video. When coding modes are assigned to partitions of video that likely would introduce visually perceptible coding artifacts during decode, the partitions may be subject to a coding process in which a selected partition is coded according to coding modes that correspond to neighboring partitions, then decoded. The decoded data of the selected partition may be recoded according to a different coding mode. Coding artifacts that otherwise might be introduced by the different coding mode may be avoided by first coding the corresponding partition in a manner that is consistent with neighboring partitions, then decoding the coded partition and re-coding the decoded data according to the different mode. In an embodiment, a quantization parameter may be reduced between a first code and the recode. The coding technique may be applied to partitions of various scales—e.g., to pixel blocks or frames.

    摘要翻译： 视频编码系统由于在相邻的视频分区之间选择不同的编码模式，减少了引入编码视频的可察觉的伪像。 当编码模式被分配给可能在解码期间引入视觉上可感知的编码伪像的视频分区时，分区可以经受编码处理，其中根据与相邻分区对应的编码模式对所选择的分区进行编码，然后进行解码。 可以根据不同的编码模式重新编码所选分区的解码数据。 可以通过以与相邻分区一致的方式对相应的分区进行编码，然后根据不同的模式对编码的分区进行解码并重新编码解码的数据，可以避免不同的编码模式可能引入的编码人造物。 在一个实施例中，可以在第一代码和重新编码之间减少量化参数。 编码技术可以应用于各种尺度的分区，例如，应用于像素块或帧。

    POST-PROCESSING FOR DECODER COMPLEXITY SCALABILITY
    7.
    发明申请
    POST-PROCESSING FOR DECODER COMPLEXITY SCALABILITY 有权
    解码器复杂度可扩展性的后处理

    公开(公告)号：US20080063085A1

    公开(公告)日：2008-03-13

    申请号：US11530810

    申请日：2006-09-11

    申请人： Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Christian L. DUVIVIER ,  James NORMILE ,  Jochen Christian SCHMIDT ,  Chris Yoochang CHUNG

    发明人： Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Christian L. DUVIVIER ,  James NORMILE ,  Jochen Christian SCHMIDT ,  Chris Yoochang CHUNG

    IPC分类号： H04N11/02 ,  H04N7/12

    CPC分类号： H04N7/26946 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

    摘要： Systems, apparatuses and methods whereby a base coded video signal is provided to a decoder having a set of post-processing stages. The base coded video signal can be decoded to produce a base decoded video signal. Post-processing of the base decoded video signal can be used to produce an enhanced quality video output signal. Application of a post-processing stage can be implemented according to the capabilities of the decoder and/or the instantaneous operating parameters of the decoder and/or characteristics of a display. A control signal, communicated over a dedicated channel separate from the base coded video signal, can be used initiate and/or aid implementation of a post-processing stage. The control signal can also provide information to assist/manage the decoding of the base coded video signal. The use of additional post-processing stages increases the complexity of an overall decoding process while improving the quality of a resulting reproduced video sequence.

    摘要翻译： 将基本编码视频信号提供给具有一组后处理级的解码器的系统，装置和方法。 基编码视频信号可被解码以产生基本解码视频信号。 可以使用基本解码视频信号的后处理来产生增强的质量视频输出信号。 后处理阶段的应用可以根据解码器的能力和/或解码器的瞬时操作参数和/或显示器的特性来实现。 可以使用通过与基本编码视频信号分开的专用信道传送的控制信号来启动和/或辅助后处理阶段的实现。 控制信号还可以提供信息来辅助/管理基本编码视频信号的解码。 使用额外的后处理级增加了整体解码过程的复杂性，同时提高了所得到的再现视频序列的质量。

    Power saving decoder architecture
    8.
    发明授权
    Power saving decoder architecture 有权
    省电解码器架构

    公开(公告)号：US08718129B2

    公开(公告)日：2014-05-06

    申请号：US11934394

    申请日：2007-11-02

    申请人： Hsi-Jung Wu ,  Ionut Hristodorescu ,  James Oliver Normile

    发明人： Hsi-Jung Wu ,  Ionut Hristodorescu ,  James Oliver Normile

    IPC分类号： H04N7/12

    CPC分类号： H04N19/436 ,  H04N19/103 ,  H04N19/156 ,  H04N19/176 ,  H04N19/42 ,  H04N19/44 ,  H04N19/61 ,  H04N19/88

    摘要： A method and system are provided for decoding coded video data by turning off or not loading at least one functional unit or functional subunit of the decoder while decoding a portion of the coded video data. A schedule may be created prior to substantive decoding and then the schedule may be used to decode coded video data. The coded video data may be reordered based on the functional units or subunits the portions of the coded video data need for decoding. The portions of the coded video data are reordered into their original order in an output buffer after being decoded. The decoder may determine which functional units or subunits are needed for decoding based on administration information included with the coded video data. The decoder may decode portions of the coded video data in parallel.

    摘要翻译： 提供了一种方法和系统，用于通过在对一部分编码视频数据进行解码的同时关闭或不加载解码器的至少一个功能单元或功能子单元来解码编码的视频数据。 可以在实质性解码之前创建调度，然后可以使用调度来解码经编码的视频数据。 编码视频数据可以基于编码视频数据部分需要解码的功能单元或子单元重新排序。 在解码之后，将编码的视频数据的部分重新排序成输出缓冲器中的原始顺序。 解码器可以基于包括在编码视频数据中的管理信息来确定需要哪个功能单元或子单元进行解码。 解码器可以并行地解码编码视频数据的部分。

    IMAGE ACQUISITION AND TRANSCODING SYSTEM
    10.
    发明申请
    IMAGE ACQUISITION AND TRANSCODING SYSTEM 审中-公开
    图像采集和扫描系统

    公开(公告)号：US20100309975A1

    公开(公告)日：2010-12-09

    申请号：US12533985

    申请日：2009-07-31

    申请人： Xiaosong ZHOU ,  Davide CONCION ,  Guy COTE ,  Cecile FORET ,  Haitao (Harry) GUO ,  Ionut HRISTODORESCU ,  James Oliver NORMILE ,  Xiaojin SHI ,  Hsi-Jung WU

    发明人： Xiaosong ZHOU ,  Davide CONCION ,  Guy COTE ,  Cecile FORET ,  Haitao (Harry) GUO ,  Ionut HRISTODORESCU ,  James Oliver NORMILE ,  Xiaojin SHI ,  Hsi-Jung WU

    IPC分类号： H04N7/26

    CPC分类号： H04N5/772 ,  H04N5/765 ,  H04N5/781 ,  H04N5/85 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8205 ,  H04N19/107 ,  H04N19/124 ,  H04N19/139 ,  H04N19/14 ,  H04N19/40 ,  H04N19/46 ,  H04N19/85

    摘要： A method and system are provided to encode a video sequence into a compressed bitstream. An encoder receives a video sequence from an image-capture device, together with metadata associated with the video sequence, and codes the video sequence into a first compressed bitstream using the metadata to select or revise a coding parameter associated with a coding operation. Optionally, the video sequence may be conditioned for coding by a preprocessor, which also may use the metadata to select or revise a preprocessing parameter associated with a preprocessing operation. The encoder may itself generate metadata associated with the first compressed bitstream, which may be used together with any metadata received by the encoder, to transcode the first compressed bitstream into a second compressed bitstream. The compressed bitstreams may be decoded by a decoder to generate recovered video data, and the recovered video data may be conditioned for viewing by a postprocessor, which may use the metadata to select or revise a postprocessing parameter associated with a postprocessing operation.

    摘要翻译： 提供了将视频序列编码为压缩比特流的方法和系统。 编码器从图像捕获装置接收视频序列以及与视频序列相关联的元数据，并且使用元数据将视频序列编码为第一压缩比特流，以选择或修改与编码操作相关联的编码参数。 可选地，视频序列可以由预处理器进行调节，预处理器也可以使用元数据来选择或修改与预处理操作相关联的预处理参数。 编码器本身可以产生与可与编码器接收的任何元数据一起使用的第一压缩比特流相关联的元数据，以将第一压缩比特流转码为第二压缩比特流。 压缩比特流可以由解码器解码以产生恢复的视频数据，并且恢复的视频数据可以被调整为由后处理器进行查看，后处理器可以使用元数据来选择或修改与后处理操作相关联的后处理参数。