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    Object boundary detection using a constrained viterbi search
    61.
    发明授权
    Object boundary detection using a constrained viterbi search 失效
    使用约束维特比搜索的对象边界检测

    公开(公告)号：US06266443B1

    公开(公告)日：2001-07-24

    申请号：US09219062

    申请日：1998-12-22

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

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

    IPC分类号： G06K948

    CPC分类号： G06T7/143 ,  G06T7/12 ,  G06T2207/10016 ,  G06T2207/20081

    摘要： A method detects a boundary in a sequence of two-dimensional images where each image has multiple intensity value points. Filtering and motion analysis is applied on each image to produce motion enhanced images. Initial search parameters are determined from a dynamic snake model applied to the motion enhanced images. Each motion enhanced image is searched for a potential boundary using the search parameters. The potential boundary is projected into the motion enhanced image of a previous, current, and next image, and the search parameters of the previous, current, and next images are updated. The searching, projecting, and updating repeat until a predetermined level of convergence is reached.

    摘要翻译： 一种方法检测二维图像序列中的边界，其中每个图像具有多个强度值点。 对每个图像应用滤波和运动分析以产生运动增强图像。 从应用于运动增强图像的动态蛇模型确定初始搜索参数。 使用搜索参数搜索每个运动增强图像的潜在边界。 潜在边界被投影到先前，当前和下一个图像的运动增强图像中，并且更新先前，当前和下一图像的搜索参数。 搜索，投影和更新重复，直到达到预定的收敛水平。

    Method for Coding Pictures Using Hierarchical Transform Units
    62.
    发明申请
    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：US20120281928A1

    公开(公告)日：2012-11-08

    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。

    Method and system for randomly accessing multiview videos with known prediction dependency
    63.
    发明授权
    Method and system for randomly accessing multiview videos with known prediction dependency 有权
    随机访问具有已知预测依赖关系的多视点视频的方法和系统

    公开(公告)号：US07903737B2

    公开(公告)日：2011-03-08

    申请号：US11385620

    申请日：2006-03-21

    申请人： Emin Martinian ,  Anthony Vetro ,  Jun Xin ,  Sehoon Yea ,  Huifang Sun

    发明人： Emin Martinian ,  Anthony Vetro ,  Jun Xin ,  Sehoon Yea ,  Huifang Sun

    IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04

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

    摘要： A method randomly accesses multiview videos. 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.

    摘要翻译： 一种随机访问多视点视频的方法。 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。

    Method and system for synthesizing multiview videos
    64.
    发明授权
    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：US07728877B2

    公开(公告)日：2010-06-01

    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。

    System and method for joint de-interlacing and down-sampling using adaptive frame and field filtering
    66.
    发明授权
    System and method for joint de-interlacing and down-sampling using adaptive frame and field filtering 失效
    使用自适应帧和场滤波的联合去隔行和下采样的系统和方法

    公开(公告)号：US07483577B2

    公开(公告)日：2009-01-27

    申请号：US10791203

    申请日：2004-03-02

    申请人： Jun Xin ,  Anthony Vetro ,  Huifang Sun

    发明人： Jun Xin ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06K9/36 ,  G06K9/46 ,  H04N11/20

    CPC分类号： H04N7/012 ,  G09G2310/0229 ,  G09G2320/0261 ,  G09G2320/103 ,  G09G2340/02 ,  G09G2340/0407

    摘要： A method and system processes a compressed input video. The compressed input video is processed to produce an interlaced picture, and macroblock coding information of the input video. The interlaced picture has a first spatial resolution, and a top-field and a bottom-field. The top-field and the bottom-field of the interlaced picture are filtered adaptively according to the macroblock coding information to produce a progressive picture with a second spatial resolution less than the first spatial resolution.

    摘要翻译： 方法和系统处理压缩输入视频。 处理压缩输入视频以产生隔行图像，以及输入视频的宏块编码信息。 隔行图片具有第一空间分辨率，顶场和底场。 隔行扫描图像的顶场和底场根据宏块编码信息进行自适应滤波，以产生具有小于第一空间分辨率的第二空间分辨率的渐进图像。

    Video transcoding of scalable multi-layer videos to single layer video
    68.
    发明授权
    Video transcoding of scalable multi-layer videos to single layer video 失效
    将可扩展多层视频视频转码为单层视频

    公开(公告)号：US07391807B2

    公开(公告)日：2008-06-24

    申请号：US10128758

    申请日：2002-04-24

    申请人： Yao-Chung Lin ,  Chung-Neng Wang ,  Tihao Chiang ,  Anthony Vetro ,  Huifang Sun

    发明人： Yao-Chung Lin ,  Chung-Neng Wang ,  Tihao Chiang ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： H04N7/18

    CPC分类号： H04N19/34 ,  H04N19/124 ,  H04N19/152 ,  H04N19/154 ,  H04N19/187 ,  H04N19/40 ,  H04N19/61

    摘要： A method transcodes a compressed multi-layer video bitstream that includes a base layer bitstream and an enhancement layer bitstream. The base and enhancement layers are first partially decoded, and then the partially decoded signals are combined with a motion compensated signal yielding a combined signal. The combined signal is quantized into an output signal according to a quantization parameter, and the output signal is variable length encoded as a single layer bitstream. In a preprocessing step, the enhancement layer can be truncated according to rate control constraint, and the same constraints can also be used during the quantization.

    摘要翻译： 一种对包括基本层比特流和增强层比特流的压缩多层视频比特流进行转码的方法。 首先对基础和增强层进行部分解码，然后将部分解码的信号与产生组合信号的运动补偿信号组合。 组合信号根据量化参数被量化为输出信号，并且输出信号是可变长度编码为单层比特流。 在预处理步骤中，可以根据速率控制约束来截断增强层，并且在量化期间也可以使用相同的约束。

    System and method for determining coding modes, DCT types and quantizers for video coding
    69.
    发明授权
    System and method for determining coding modes, DCT types and quantizers for video coding 失效
    用于确定编码模式的系统和方法，用于视频编码的DCT类型和量化器

    公开(公告)号：US07280597B2

    公开(公告)日：2007-10-09

    申请号：US10602963

    申请日：2003-06-24

    申请人： Ximin Zhang ,  Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    发明人： Ximin Zhang ,  Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： H04N7/12 ,  H04N11/02

    CPC分类号： H04N19/192 ,  H04N19/112 ,  H04N19/122 ,  H04N19/124 ,  H04N19/147 ,  H04N19/149 ,  H04N19/172 ,  H04N19/19 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61

    摘要： A method encodes a video by first measuring a variance of pixel intensities in a current frame. A number of bits to encode the current frame is assigned according to rate and buffer fullness constraints. A multiplier value is determined directly as a function of only the variance and the number of bits assigned to the current frame. Motion vectors between a reference frame and the current frame are estimated, and a sum of absolute difference (SAD) is based on a motion compensated residual between the reference frame and the current frame. An encoding mode is determined for each macro block in the current frame based on the sum of absolute difference, the motion vectors and the multiplier value. Then, the motion compensated residual is encoded based on the encoding mode, multiplier value and the number of allocated bits.

    摘要翻译： 一种方法通过首先测量当前帧中的像素强度的方差来对视频进行编码。 根据速率和缓冲区满足约束来分配对当前帧进行编码的位数。 根据分配给当前帧的方差和比特数，直接确定乘数值。 估计参考帧与当前帧之间的运动向量，并且绝对差（SAD）之和基于参考帧与当前帧之间的运动补偿残差。 基于绝对差，运动矢量和乘数值之和确定当前帧中的每个宏块的编码模式。 然后，基于编码模式，乘数值和分配位数来对运动补偿残差进行编码。

    Encoding a video with a variable frame-rate while minimizing total average distortion
    70.
    发明授权
    Encoding a video with a variable frame-rate while minimizing total average distortion 失效
    以可变帧率编码视频，同时最小化总平均失真

    公开(公告)号：US07209519B2

    公开(公告)日：2007-04-24

    申请号：US09835691

    申请日：2001-04-16

    申请人： Anthony Vetro ,  Huifang Sun ,  Yao Wang

    发明人： Anthony Vetro ,  Huifang Sun ,  Yao Wang

    IPC分类号： H04N7/12

    CPC分类号： H04N19/587 ,  H04N19/124 ,  H04N19/132 ,  H04N19/147 ,  H04N19/149 ,  H04N19/152 ,  H04N19/172 ,  H04N19/20

    摘要： A method encodes a video as video objects. For each candidate object, a quantizer parameter and a skip parameter that jointly minimizes an average total distortion in the video are determined while satisfying predetermined constraints. The average total distortion includes spatial distortion of coded objects and spatial and temporal distortion of uncoded objects. Then, the candidate objects is encoded as the coded objects with the quantizer parameter and the skip parameter, and the candidate objects is skipped as the uncoded objects with the skip parameter.

    摘要翻译： 一种方法将视频编码为视频对象。 对于每个候选对象，在满足预定约束条件的同时确定联合最小化视频中的平均总失真的量化器参数和跳过参数。 平均总失真包括编码对象的空间失真和未编码对象的空间和时间失真。 然后，候选对象被编码为具有量化参数和跳过参数的编码对象，并且候选对象被跳过为具有跳过参数的未编码对象。