中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

118 records (took 0.029 seconds)

    ADAPTIVE VIDEO ENCODER CONTROL
    51.
    发明申请
    ADAPTIVE VIDEO ENCODER CONTROL 审中-公开
    自适应视频编码器控制

    公开(公告)号：WO2010033565A1

    公开(公告)日：2010-03-25

    申请号：PCT/US2009/057117

    申请日：2009-09-16

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  LI, Zhen ,  TOURAPIS, Alexandros

    Inventor： LI, Zhen ,  TOURAPIS, Alexandros

    IPC: H04N7/26

    CPC classification number: H04N19/19 ,  H04N19/103 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/196

    Abstract: A value of one or more Lagrangian multipliers is adaptively estimate and update based, at least in part, on the video source statistics or dynamic programming. Methods, techniques, and systems involve determining a first Lagrangian multiplier with a video encoder, and updating a second Lagrangian multiplier with the first Lagrangian multiplier. The system can include a Lagrangian multiplier Estimation Module that estimates the Lagrangian multiplier, and a Lagrangian multiplier Update Module that updates the current Lagrangian multiplier using the estimated Lagrangian multiplier. The Online Lagrangian Multiplier Estimation Module may function with Rate Distortion Slope Estimation with Rate Distortion Optimized Mode Decision; Rate Distortion Slope Estimation with Local Approximation; Rate Distortion Slope Estimation with Local Information; or Rate Distortion Slope Estimation with Global Information. The Lagrangian Multiplier Update Module may function with Direct Update; Step Size Update; Sliding Window Update; or Periodical Update.

    Abstract translation: 一个或多个拉格朗日乘数的值至少部分地基于视频源统计或动态规划自适应地估计和更新。 方法，技术和系统涉及用视频编码器确定第一拉格朗日乘数，并用第一拉格朗日乘数更新第二拉格朗日乘数。 该系统可以包括拉格朗日乘数估计模块，其估计拉格朗日乘数，以及拉格朗日乘数更新模块，其使用估计的拉格朗日乘数来更新当前的拉格朗日乘数。 在线拉格朗日乘数估计模块可以利用速率失真优化模式决策的速率失真斜率估计功能; 利用局部逼近估计失真坡度估计; 用本地信息估价失真坡度估计; 或使用全局信息对失真斜率进行估计。 拉格朗日乘数更新模块可以直接更新; 步长更新; 滑动窗口更新; 或定期更新。

    OVERLAPPED BLOCK DISPARITY ESTIMATION AND COMPENSATION ARCHITECTURE
    52.
    发明申请
    OVERLAPPED BLOCK DISPARITY ESTIMATION AND COMPENSATION ARCHITECTURE 审中-公开
    重叠块差异估计和补偿结构

    公开(公告)号：WO2010017166A2

    公开(公告)日：2010-02-11

    申请号：PCT/US2009052650

    申请日：2009-08-04

    Applicant: DOLBY LAB LICENSING CORP ,  TOURAPIS ALEXANDROS ,  LEONTARIS ATHANASIOS

    Inventor： TOURAPIS ALEXANDROS ,  LEONTARIS ATHANASIOS

    IPC: G06T7/20

    CPC classification number: H04N19/139 ,  H04N19/103 ,  H04N19/105 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/30 ,  H04N19/46 ,  H04N19/521 ,  H04N19/573 ,  H04N19/577 ,  H04N19/583 ,  H04N19/597 ,  H04N19/61

    Abstract: Techniques and systems are disclosed that relate to overlapped block disparity estimation and compensation. Some methods for compensation of images with overlapped block disparity compensation (OBDC) involve determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The one or more neighboring macroblocks can be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, the methods involve performing prediction for a region of the first macroblock that has an edge adjacent with the one or more neighboring macroblocks. OBDC can be causally applied. The methods can involve sharing or copying one or more disparity compensation parameters or modes amongst one or more views or layers. Various types of prediction can be used with causally-applied OBDC features and techniques.

    Abstract translation: 公开了涉及重叠块差异估计和补偿的技术和系统。 用于利用重叠块差异补偿（OBDC）来补偿图像的一些方法涉及确定是否在视频比特流中启用OBDC，以及确定是否对与视频比特流内的第一宏块相邻的一个或多个宏块启用OBDC。 一个或多个相邻宏块可以被变换编码。 如果在视频比特流中启用OBDC并且针对一个或多个相邻宏块启用OBDC，则该方法涉及对具有与一个或多个相邻宏块相邻的边缘的第一宏块的区域执行预测。 OBDC可以因果使用。 这些方法可以涉及在一个或多个视图或层之间共享或复制一个或多个视差补偿参数或模式。 各种类型的预测可以与因果应用的OBDC功能和技术一起使用。

    RATE CONTROL MODEL ADAPTATION BASED ON SLICE DEPENDENCIES FOR VIDEO CODING
    53.
    发明申请
    RATE CONTROL MODEL ADAPTATION BASED ON SLICE DEPENDENCIES FOR VIDEO CODING 审中-公开
    基于视频编码的片段依赖性的速率控制模型适配

    公开(公告)号：WO2010005691A1

    公开(公告)日：2010-01-14

    申请号：PCT/US2009/047317

    申请日：2009-06-15

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  LEONTARIS, Athanasios ,  TOURAPIS, Alexandros

    Inventor： LEONTARIS, Athanasios ,  TOURAPIS, Alexandros

    IPC: H04N7/50 ,  H04N7/26

    CPC classification number: H04N19/103 ,  H04N19/12 ,  H04N19/124 ,  H04N19/137 ,  H04N19/14 ,  H04N19/142 ,  H04N19/149 ,  H04N19/152 ,  H04N19/154 ,  H04N19/172 ,  H04N19/194 ,  H04N19/31 ,  H04N19/40 ,  H04N19/50 ,  H04N19/52 ,  H04N19/547 ,  H04N19/577

    Abstract: Statistics for estimating quantization factors of a coding-unit type (e.g., B-coded or I-coded) pictures are determined from other, possibly different (e.g., P-coded) pictures, or previously coded coding-units. Bit rate and quality relationships between such coding-unit types may be used with the quantization parameters. Estimating bit rate and quality relationships between coding-unit types enables accurate rate control for pictures regardless of their coding-unit type. Bit rate and quality relationships between coding-unit types can be used with multiple rate control models to increase compression. Rate control parameters may be adjusted with statistics generated by a motion estimation and compensation framework. Rate control performance may be controlled in transcoding compressed bit streams.

    Abstract translation: 用于估计编码单元类型（例如，B编码或I编码）图像的量化因子的统计从其他可能不同的（例如，P编码的）图像或先前编码的编码单元确定。 这样的编码单元类型之间的比特率和质量关系可以与量化参数一起使用。 估计编码单元类型之间的比特率和质量关系使得能够对图像进行精确的速率控制，而不管其编码单元类型如何。 编码单元类型之间的比特率和质量关系可以与多个速率控制模型一起使用以增加压缩。 速率控制参数可以通过运动估计和补偿框架生成的统计数据进行调整。 速率控制性能可以在转码压缩比特流中被控制。

    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING
    54.
    发明申请
    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING 审中-公开
    基于边缘的时空滤波的方法和设备

    公开(公告)号：WO2007089803A3

    公开(公告)日：2007-10-11

    申请号：PCT/US2007002578

    申请日：2007-01-30

    Applicant: THOMSON LICENSING ,  TOURAPIS ALEXANDROS MICHAEL ,  BOYCE JILL MACDONALD

    Inventor： TOURAPIS ALEXANDROS MICHAEL ,  BOYCE JILL MACDONALD

    IPC: H04N7/26

    CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20182 ,  H04N7/0142 ,  H04N19/577 ,  H04N19/59 ,  H04N19/615 ,  H04N19/63 ,  H04N19/80 ,  H04N19/86

    Abstract: There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter (110, 190), a motion compensator (130), a deblocking filter (140), and a temporal filter (150). The spatial filter (110, 190) is for spatially filtering a picture in the sequence and at least one reference picture selected from among previous pictures and subsequent pictures in the sequence with respect to the picture. The motion compensator (130), in signal communication with the spatial filter, is for forming, subsequent to spatial filtering, multiple temporal predictions for the picture from the at least one reference picture. The deblocking filter (140), in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter (150), in signal communication with the deblocking filter, is for temporally filtering the multiple temporal predictions and combining the multiple temporal predictions to generate a noise reduced version of the picture.

    Abstract translation: 提供了用于基于边缘的时空滤波的方法和设备。 一种用于对图片序列进行滤波的装置包括空间滤波器（110,190），运动补偿器（130），去块滤波器（140）和时间滤波器（150）。 空间滤波器（110,190）用于对序列中的图片和从该图片的序列中的先前图片和后续图片中选择的至少一个参考图片进行空间滤波。 与空间滤波器进行信号通信的运动补偿器（130）用于在空间滤波之后针对来自至少一个参考图片的图片形成多个时间预测。 与运动补偿器进行信号通信的去块滤波器（140）用于对多个时间预测进行去块滤波。 与去块滤波器进行信号通信的时间滤波器（150）用于对多个时间预测进行时间滤波并且组合多个时间预测以生成图像的噪声减少版本。

    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING USING ADAPTIVE INTERPOLATION
    57.
    发明申请
    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING USING ADAPTIVE INTERPOLATION 审中-公开
    用于使用自适应插值的视频编码和解码的方法和设备

    公开(公告)号：WO2007002437A3

    公开(公告)日：2007-05-03

    申请号：PCT/US2006024528

    申请日：2006-06-23

    Applicant: NTT DOCOMO INC ,  BOSSEN FRANK JAN ,  TOURAPIS ALEXANDROS

    Inventor： BOSSEN FRANK JAN ,  TOURAPIS ALEXANDROS

    IPC: H04N7/26 ,  H04N7/36 ,  H04N7/46

    CPC classification number: H04N19/577 ,  H04N19/117 ,  H04N19/139 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/523 ,  H04N19/59

    Abstract: A method and apparatus is disclosed herein for video encoding and/or decoding using adaptive interpolation is described. In one embodiment, the decoding method comprises decoding a reference index; decoding a motion vector; selecting a reference frame according to the reference index; selecting a filter according to the reference index; and filtering a set of samples of the reference frame using the filter to obtain the predicted block, wherein the set of samples of the reference frame is determined by the motion vector.

    Abstract translation: 描述了用于使用自适应内插的视频编码和/或解码的方法和设备。 在一个实施例中，解码方法包括解码参考索引; 解码运动矢量; 根据参考索引选择参考帧; 根据参考索引选择过滤器; 以及使用所述滤波器对所述参考帧的一组样本进行滤波以获得所述预测块，其中所述参考帧的所述一组样本由所述运动向量确定。

Patent Agency Ranking