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173 条记录 (耗时 0.036 秒)

    Determining disparity search range in stereo videos
    71.
    发明授权
    Determining disparity search range in stereo videos 有权
    确定立体视频中的视差搜索范围

    公开(公告)号：US08290248B2

    公开(公告)日：2012-10-16

    申请号：US12651200

    申请日：2009-12-31

    申请人： Sehoon Yea ,  Dongbo Min ,  Zafer Arican ,  Anthony Vetro

    发明人： Sehoon Yea ,  Dongbo Min ,  Zafer Arican ,  Anthony Vetro

    IPC分类号： G06K9/00

    CPC分类号： G06T7/593 ,  G06T2207/10021

    摘要： Embodiments of the invention disclose a system and a method for determining a disparity search range for a current stereo image of a scene based on a set of stereo images of the scene, comprising steps of: selecting a subset of stereo images from the set of stereo images, the subset includes the current stereo image and at least one neighboring stereo image, wherein the neighboring stereo image is temporally-neighboring to the current stereo image; determining a disparity histogram for each stereo image in the subset of stereo images to form a set of disparity histograms; determining a weighted disparity histogram as a weighted sum of the disparity histograms in the set of disparity histograms; and determining the disparity search range from the weighted disparity histogram.

    摘要翻译： 本发明的实施例公开了一种用于基于场景的一组立体图像来确定场景的当前立体图像的视差搜索范围的系统和方法，包括以下步骤：从立体声集合中选择立体图像的子集 图像，所述子集包括当前立体声图像和至少一个邻近立体图像，其中相邻立体图像与当前立体图像在时间上相邻; 确定立体图像子集中的每个立体图像的视差直方图以形成一组视差直方图; 将加权视差直方图确定为视差直方图组中的视差直方图的加权和; 并从加权视差直方图确定视差搜索范围。

    Secure Similarity Verification Between Encrypted Signals
    74.
    发明申请
    Secure Similarity Verification Between Encrypted Signals 有权
    加密信号之间的安全相似性验证

    公开(公告)号：US20100246812A1

    公开(公告)日：2010-09-30

    申请号：US12413990

    申请日：2009-03-30

    申请人： Shantanu Rane ,  Wei Sun ,  Anthony Vetro

    发明人： Shantanu Rane ,  Wei Sun ,  Anthony Vetro

    IPC分类号： H04L9/28

    CPC分类号： H04L9/008 ,  G09C1/00 ,  H04L9/302 ,  H04L9/321 ,  H04L9/3271

    摘要： A method for verifying a similarity between a first signal and a second signal is described. The first and the second signals are encrypted homomorphically using a key. First, we acquire a set of error patterns determined by a similarity constraint. Then, each error pattern is homomorphically encrypted using the key and presented to a verifier in the setup phase. The verifier declares the first signal similar to the second signal, if any error pattern in the set of error patterns satisfies a homomorphic relationship between the first encrypted signal and the second encrypted signal.

    摘要翻译： 描述了用于验证第一信号和第二信号之间的相似性的方法。 第一和第二信号使用密钥同态加密。 首先，我们获取由相似性约束确定的一组错误模式。 然后，使用密钥对每个错误模式进行同态加密，并在设置阶段提供给验证者。 验证者声明类似于第二信号的第一信号，如果错误模式集合中的任何错误模式满足第一加密信号和第二加密信号之间的同态关系。

    Method for Virtual Image Synthesis
    75.
    发明申请
    Method for Virtual Image Synthesis 有权
    虚拟图像合成方法

    公开(公告)号：US20100238160A1

    公开(公告)日：2010-09-23

    申请号：US12405912

    申请日：2009-03-17

    申请人： Sehoon Yea ,  Kwan-Jung Oh ,  Anthony Vetro

    发明人： Sehoon Yea ,  Kwan-Jung Oh ,  Anthony Vetro

    IPC分类号： G06T15/00

    CPC分类号： G06T3/0093 ,  G06T5/009 ,  G06T5/30 ,  G06T5/40 ,  G06T5/50 ,  G06T15/205 ,  G06T2207/10016 ,  G06T2207/10028 ,  G06T2207/20028 ,  G06T2207/20036 ,  H04N13/261 ,  H04N19/597

    摘要： A method synthesizes virtual images from a sequence of texture images and a sequence of corresponding depth images, wherein each depth images stores depths d at pixel locations I(x, y). Each depth image, is preprocessed to produce a corresponding preprocessed depth image. A first reference image and a second reference image are from the sequence of texture images. Then, depth-based 3D warping, depth-based histogram matching, base plus assistant image blending, and depth-based in-painting are applied in order to synthesize a virtual image.

    摘要翻译： 一种方法从纹理图像序列和相应深度图像的序列合成虚拟图像，其中每个深度图像存储像素位置I（x，y）处的深度d。 每个深度图像被预处理以产生相应的预处理深度图像。 第一参考图像和第二参考图像来自纹理图像序列。 然后，应用基于深度的3D翘曲，基于深度的直方图匹配，基础加辅助图像混合和基于深度的绘画，以便合成虚拟图像。

    Method and system for processing multiview videos for view synthesis using side information
    76.
    发明授权
    Method and system for processing multiview videos for view synthesis using side information 有权
    用于使用侧面信息处理多视点视频以进行视图合成的方法和系统

    公开(公告)号：US07728878B2

    公开(公告)日：2010-06-01

    申请号：US11485092

    申请日：2006-07-12

    申请人： Sehoon Yea ,  Emin Martinian ,  Anthony Vetro ,  Jong Dae Oh ,  Serdar Ince

    发明人： Sehoon Yea ,  Emin Martinian ,  Anthony Vetro ,  Jong Dae Oh ,  Serdar Ince

    IPC分类号： H04N5/225

    CPC分类号： H04N19/615 ,  H04N13/243 ,  H04N19/103 ,  H04N19/105 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/573 ,  H04N19/597 ,  H04N19/61 ,  H04N19/63

    摘要： A method processes a multiview videos of a scene, in which each video is acquired by a corresponding camera arranged at a particular pose, and in which a view of each camera overlaps with the view of at least one other camera. Side information for synthesizing a particular view of the multiview video is obtained in either an encoder or decoder. A synthesized multiview video is synthesized from the of multiview videos and the side information. A reference picture list is maintained for each current frame of each of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list.

    摘要翻译： 一种处理场景的多视点视频的方法，其中通过布置在特定姿态的相应摄像机获取每个视频，并且其中每个摄像机的视图与至少一个其他摄像机的视图重叠。 在编码器或解码器中获得用于合成多视图视频的特定视图的侧面信息。 合成的多视点视频是从多视点视频和侧面信息合成的。 维护每个多视角视频的每个当前帧的参考图片列表，参考图片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。 根据由相​​关联的参考图片列表索引的参考图片预测多视图视频的每个当前帧。

    Quality control for image transcoding
    77.
    发明授权
    Quality control for image transcoding 失效
    图像转码质量控制

    公开(公告)号：US07672524B2

    公开(公告)日：2010-03-02

    申请号：US11367055

    申请日：2006-03-02

    申请人： Derek L. Schwenke ,  Anthony Vetro

    发明人： Derek L. Schwenke ,  Anthony Vetro

    IPC分类号： G06K9/36

    CPC分类号： H04N19/132 ,  H04N19/146 ,  H04N19/154 ,  H04N19/17 ,  H04N19/172 ,  H04N19/40

    摘要： A method and apparatus transcode an image. An encoded input bitstream of the image is analyzed to obtain a structure of the encoded input bitstream, in which the image includes a region-of-interest and a background region, and in which the encoded input bitstream is a stream of packets. A first quality value for the region-of-interest and a second quality value for the background region are determined. An encoded output bitstream is composed from a subset of the packets selected from the encoded input bitstream according to the structure, in which the subset of packets includes a first set of packets corresponding to the region-of-interest having the first quality value, a second set of packets corresponding to the background region and having second quality value, and empty packets.

    摘要翻译： 一种方法和装置对图像进行转码。 分析图像的编码输入比特流以获得编码的输入比特流的结构，其中图像包括感兴趣区域和背景区域，并且其中编码的输入比特流是分组流。 确定感兴趣区域的第一质量值和背景区域的第二质量值。 编码输出比特流由根据结构从编码输入比特流中选择的分组的子集组成，其中分组子集包括与具有第一质量值的兴趣区对应的第一组分组， 对应于背景区域并具有第二质量值的第二组分组，以及空分组。

    Resource-constrained sampling of multiple compressed videos
    79.
    发明授权
    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：US07489726B2

    公开(公告)日：2009-02-10

    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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

    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。

    Inverse Tone Mapping for Bit-Depth Scalable Image Coding Adapted to Variable Block Sizes
    80.
    发明申请
    Inverse Tone Mapping for Bit-Depth Scalable Image Coding Adapted to Variable Block Sizes 有权
    用于位深可缩放图像编码的逆色调映射适应于可变块大小

    公开(公告)号：US20090003718A1

    公开(公告)日：2009-01-01

    申请号：US12039007

    申请日：2008-02-28

    申请人： Shan Liu ,  Anthony Vetro

    发明人： Shan Liu ,  Anthony Vetro

    IPC分类号： G06K9/46 ,  G09G5/02

    CPC分类号： H04N19/36 ,  H04N19/102 ,  H04N19/126 ,  H04N19/17 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61

    摘要： A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image a scaling factor is determined by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block. The inverse tone mapping can also be applied to blocks of different sizes.

    摘要翻译： 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块，通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差来确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值以产生映射块。 逆音调映射也可以应用于不同大小的块。