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    Error resilient encoding method for inter-frames of compressed videos
    12.
    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
    14.
    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
    15.
    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
    16.
    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
    17.
    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。

    Method for ordering image spaces to represent object shapes
    18.
    发明授权
    Method for ordering image spaces to represent object shapes 失效
    用于排序图像空间来表示对象形状的方法

    公开(公告)号：US06307964B1

    公开(公告)日：2001-10-23

    申请号：US09326759

    申请日：1999-06-04

    申请人： I-Jong Lin ,  Anthony Vetro ,  Huifang Sun ,  Sun-Yuan Kung

    发明人： I-Jong Lin ,  Anthony Vetro ,  Huifang Sun ,  Sun-Yuan Kung

    IPC分类号： G06K900

    CPC分类号： G06T9/001 ,  G06T9/20

    摘要： A method represents a shape of an object in an image. Portions of the image interior to a boundary of the object are ordered. A medial axis for the ordered portions of the image is derived. The medial axis is segmented to produce an ordered tree. The ordered tree is transformed to a partial ordered tree to represent the shape of the object.

    摘要翻译： 方法表示图像中的对象的形状。 将图像内部部分到对象的边界进行排序。 导出图像的有序部分的中间轴。 内侧轴被分割以产生有序树。 有序树被转换为部分有序树以表示对象的形状。

    Method for coding pictures using hierarchical transform units
    19.
    发明授权
    Method for coding pictures using hierarchical transform units 有权
    使用分层变换单元编码图像的方法

    公开(公告)号：US08494290B2

    公开(公告)日：2013-07-23

    申请号：US13169959

    申请日：2011-06-27

    申请人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

    发明人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06K9/36

    CPC分类号： G06T9/40 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

    摘要： A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

    摘要翻译： 比特流包括编码图像，以及用于生成变换树的分割标志。 比特流是将编码单元（CU）划分成预测单元（PU）。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元（TU）。 仅当相应的分割标志被设置时，该代码才能分割每个TU。 对于包含多个TU的每个PU，将多个TU合并成一个较大的TU，根据分割和合并修改变换树。 然后，可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。

    Error concealing decoding method of intra-frames of compressed videos
    20.
    发明授权
    Error concealing decoding method of intra-frames of compressed videos 失效
    错误隐藏压缩视频帧内解码方法

    公开(公告)号：US07394855B2

    公开(公告)日：2008-07-01

    申请号：US10717826

    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： G06K9/40

    CPC分类号： H04N19/895 ,  H04N19/159

    摘要： A method conceals errors in an infra-frame of compressed video. The intra-frame is decoded to multiple macroblocks. Each macroblock including pixels arranged in a rectangular array. A lost macroblock is identified during the decoding. Pixels along an outer boundary of the lost macroblock are concealed from nearest candidate pixels along outer boundaries of macroblocks immediately adjacent to the lost macroblock. All other pixels in the lost macroblock are concealed from nearest candidate pixels selected from previously concealed pixels in the lost macroblock.

    摘要翻译： 一种方法隐藏了压缩视频的帧内错误。 帧内解码为多个宏块。 每个宏块包括以矩形阵列排列的像素。 在解码期间识别丢失的宏块。 沿着与丢失的宏块紧邻的宏块的外边界沿着离开的宏块的外边界的像素被隐藏起来。 丢失的宏块中的所有其他像素从丢失宏块中的先前隐藏的像素中选择的最近的候选像素中隐藏。