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    Method and System for Decoding Multiview Videos with Prediction Dependencies
    1.
    发明申请
    Method and System for Decoding Multiview Videos with Prediction Dependencies 有权
    用预测依赖关系解码多视点视频的方法和系统

    公开(公告)号：US20100322311A1

    公开(公告)日：2010-12-23

    申请号：US12871249

    申请日：2010-08-30

    申请人： Anthony Vetro ,  Huifang Sun ,  Jun Xin ,  Emin Martinian ,  Alexander Behrens

    发明人： Anthony Vetro ,  Huifang Sun ,  Jun Xin ,  Emin Martinian ,  Alexander Behrens

    IPC分类号： H04N7/32

    CPC分类号： H04N19/615 ,  H04N19/105 ,  H04N19/13 ,  H04N19/46 ,  H04N19/597 ,  H04N19/61 ,  H04N19/63

    摘要： Multiview videos are acquired of a scene with corresponding cameras arranged at poses, such that there is view overlap between any pair of cameras. V-frames are generated from the multiview videos. The V-frames are encoded using only spatial prediction. Then, the V-frames are inserted periodically in an encoded bit stream to provide random temporal access to the multiview videos. Additional view dependency information enables the decoding of a reduced number of frames prior to accessing randomly a target frame for a specified view and time, and decoding the target frame. The method also decodes multiview videos by maintaining a reference picture list for a current frame of a plurality of multiview videos, and predicting each current frame of the plurality of multiview videos according to reference pictures indexed by the associated reference picture list.

    摘要翻译： 多视点视频被采集到具有以姿势布置的相应摄像机的场景，使得在任何一对摄像机之间存在视图重叠。 V帧是从多视角视频生成的。 V帧仅使用空间预测编码。 然后，将V帧周期性地插入到编码比特流中，以便为多视点视频提供随机的时间访问。 附加的视图依赖性信息使得能够在对指定的视图和时间的随机访问目标帧之前对减少数量的帧进行解码，以及对目标帧进行解码。 该方法还通过维护多个多视角视频的当前帧的参考图片列表，并根据由相关参考图片列表索引的参考图片来预测多个多视角视频中的每个当前帧来对多视点视频进行解码。

    Error resilient encoding method for inter-frames of compressed videos
    5.
    发明授权
    Error resilient encoding method for inter-frames of compressed videos 失效
    压缩视频帧间错误弹性编码方法

    公开(公告)号：US07324698B2

    公开(公告)日：2008-01-29

    申请号：US10717679

    申请日：2003-11-20

    申请人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    发明人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06K9/36

    CPC分类号： H04N19/513 ,  H04N19/895

    摘要： A method encodes an inter-frame of a compressed video, the inter-frame including multiple macroblocks in a predetermined order. Each macroblock has an associated motion vector. For each current macroblock in the predetermined order, a set of near macroblocks are identified. An index is assigned to each near macroblock. A difference between the motion vector of the current macroblock and the motion vector of each near macroblocks is determined. The indices of the near macroblocks are then sorted in order of the differences and appended to the inter-frame.

    摘要翻译： 方法对压缩视频的帧间进行编码，帧间以预定顺序包括多个宏块。 每个宏块具有相关的运动矢量。 对于按照预定顺序的每个当前宏块，识别一组近似的宏块。 索引被分配给每个近似的宏块。 确定当前宏块的运动矢量与每个近似宏块的运动矢量之间的差异。 然后按照差异的顺序对近宏块的索引进行排序并附加到帧间。

    Method and system for synthesizing multiview videos
    7.
    发明申请
    Method and system for synthesizing multiview videos 有权
    合成多视点视频的方法和系统

    公开(公告)号：US20060146138A1

    公开(公告)日：2006-07-06

    申请号：US11292167

    申请日：2005-11-30

    申请人： Jun Xin ,  Emin Martinian ,  Alexander Behrens ,  Anthony Vetro ,  Huifang Sun

    发明人： Jun Xin ,  Emin Martinian ,  Alexander Behrens ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： H04N5/225

    CPC分类号： H04N19/615 ,  H04N19/103 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597 ,  H04N19/61 ,  H04N19/63

    摘要： A system and method synthesizes multiview videos. Multiview videos are acquired of a scene with corresponding cameras arranged at a poses such that there is view overlap between any pair of cameras. A synthesized multiview video is generated from the acquired multiview videos for a virtual camera. A reference picture list is maintained for each current frame of each of the multiview videos and the synthesized video. The reference picture list indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Then, each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list during encoding and decoding.

    摘要翻译： 系统和方法合成多视点视频。 获取多视角视频，其中相应的相机布置成姿势，使得在任何一对相机之间存在视图重叠。 从获取的用于虚拟相机的多视点视频生成合成的多视角视频。 为每个多视角视频和合成视频的每个当前帧维护参考图片列表。 参考图片列表索引所获取的多视角视频的时间参考图片和空间参考图片以及合成的多视角视频的合成参考图片。 然后，在编码和解码期间，根据由相关联的参考图片列表索引的参考图片来预测多视图视频的每个当前帧。

    Transcoder for scalable multi-layer constant quality video bitstreams
    8.
    发明授权
    Transcoder for scalable multi-layer constant quality video bitstreams 失效
    用于可扩展多层恒定质量视频比特流的转码器

    公开(公告)号：US06925120B2

    公开(公告)日：2005-08-02

    申请号：US09961987

    申请日：2001-09-24

    申请人： Ximin Zhang ,  Anthony Vetro ,  Yun-Qing Shi ,  Huifang Sun

    发明人： Ximin Zhang ,  Anthony Vetro ,  Yun-Qing Shi ,  Huifang Sun

    IPC分类号： H04N7/26 ,  H04N21/2343 ,  H04N21/2365 ,  H04N21/24 ,  H04N21/2662 ,  H04N21/434 ,  H04N21/4402 ,  H04N7/12

    CPC分类号： H04N21/2662 ,  H04N19/147 ,  H04N19/154 ,  H04N19/19 ,  H04N19/33 ,  H04N19/34 ,  H04N19/40 ,  H04N21/234327 ,  H04N21/23655 ,  H04N21/2402 ,  H04N21/4347

    摘要： A method codes an output bitstream of an input video so the decoded output bitstream has a constant perceived quality. A base layer bitstream having a constant bit-rate is generated from the input video, and an input enhancement layer bitstream is generated from a difference between the input video and the base layer bitstream. Rate and distortion characteristics are extracted from the base layer bitstream and the input enhancement layer bitstream, and an output enhancement layer bitstream having a variable bit-rate is generated from the input enhancement layer bitstream according to the rate and distortion characteristics. The base layer bitstream and the output enhancement layer bitstream, in combination, form an output bitstream having a variable bit-rate and a constant distortion.

    摘要翻译： 一种方法对输入视频的输出比特流进行编码，使得解码的输出比特流具有恒定的感知质量。 从输入视频产生具有恒定比特率的基本层比特流，并且从输入视频和基本层比特流之间的差异生成输入增强层比特流。 从基本层比特流和输入增强层比特流中提取速率和失真特性，并且根据速率和失真特性从输入增强层比特流生成具有可变比特率的输出增强层比特流。 基本层比特流和输出增强层比特流组合形成具有可变比特率和恒定失真的输出比特流。

    Resource-constrained sampling of multiple compressed videos
    9.
    发明申请
    Resource-constrained sampling of multiple compressed videos 失效
    资源受限的多个压缩视频采样

    公开(公告)号：US20050036547A1

    公开(公告)日：2005-02-17

    申请号：US10659904

    申请日：2003-09-11

    申请人： Anthony Vetro ,  Huifang Sun

    发明人： Anthony Vetro ,  Huifang Sun

    IPC分类号： H04N7/26 ,  H04N7/12 ,  H04N7/24

    CPC分类号： H04N21/234381 ,  H04N19/115 ,  H04N19/156 ,  H04N21/21805 ,  H04N21/21815 ,  H04N21/231

    摘要： A method acquires compressed videos. Intra-, or inter-frames of each compressed video are acquired at a fixed sampling rate. Joint analysis is applied concurrently and in parallel to the compressed videos to determine a variable and non-uniform temporal sampling rate for each compressed video so that a combined distortion is minimized and a combined frame rate constraint is satisfied. Each compressed video is then sampled at the associated variable and non-uniform temporal sampling rate to produce output compressed videos having variable temporal resolutions.

    摘要翻译： 一种方法获取压缩视频。 以固定的采样率获取每个压缩视频的帧内或帧间。 联合分析同时并行地应用于压缩视频，以确定每个压缩视频的可变和不均匀的时间采样率，使得组合失真被最小化并且组合的帧速率约束被满足。 然后以相关联的变量和非均匀时间采样率对每个压缩视频进行采样，以产生具有可变时间分辨率的输出压缩视频。

    Video transcoder with spatial resolution reduction
    10.
    发明授权
    Video transcoder with spatial resolution reduction 有权
    具有空间分辨率降低的视频转码器

    公开(公告)号：US06671322B2

    公开(公告)日：2003-12-30

    申请号：US09853394

    申请日：2001-05-11

    申请人： Anthony Vetro ,  Huifang Sun ,  Peng Yin ,  Bede Liu ,  Tommy C. Poon

    发明人： Anthony Vetro ,  Huifang Sun ,  Peng Yin ,  Bede Liu ,  Tommy C. Poon

    IPC分类号： H04N712

    CPC分类号： H04N19/40 ,  G06T3/4084 ,  H04N19/48 ,  H04N19/90

    摘要： A method transcodes groups of macroblocks of a partially decoded input bitstream. The groups of macroblocks include intra-mode and inter-mode macroblocks. Each macroblock includes DCT coefficients, and at least one motion vector. The modes of each group of macroblocks are mapped to be identical only if there is an inter-mode block and an intra-mode macroblock in the group. If any of the macroblocks in the group are mapped, then the DCT coefficients and the motion vector for such mapped macroblocks are modified in accordance with the mapping to generate reduced-resolution macroblock for an output compressed bitstream to compensate for drift.

    摘要翻译： 一种方法对部分解码的输入比特流的宏块组进行转码。 宏块组包括帧内模式和模式间宏块。 每个宏块包括DCT系数和至少一个运动矢量。 每组宏块的模式只有在组中有模式间模块和模式内宏块时才被映射为相同模式。 如果组中的任何宏块被映射，则根据映射来修改这些映射宏块的DCT系数和运动矢量，以生成用于输出压缩比特流的减小分辨率的宏块以补偿漂移。