利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

46 条记录 (耗时 0.018 秒)

    HUMAN INTERACTION TRAJECTORY-BASED SYSTEM
    1.
    发明申请
    HUMAN INTERACTION TRAJECTORY-BASED SYSTEM 有权
    人际交往路线系统

    公开(公告)号：US20120263437A1

    公开(公告)日：2012-10-18

    申请号：US13516228

    申请日：2010-12-10

    申请人： Jesus Barcons-Palau ,  Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

    发明人： Jesus Barcons-Palau ,  Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

    IPC分类号： H04N9/80

    CPC分类号： G06K9/00711 ,  G06K9/00335 ,  G06K9/00724 ,  G06K9/033 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/30228 ,  G06T2207/30241

    摘要： A method and associated apparatus for using a trajectory-based technique to detect a moving object in a video sequence at incorporates human interaction through a user interface. The method comprises steps of identifying and evaluating sets of connected components in a video frame, filtering the list of connected components by comparing features of the connected components to predetermined criteria, identifying candidate trajectories across multiple frames, evaluating the candidate trajectories to determine a selected trajectory, eliminating incorrect trajectories through use of the interface and processing images in said video sequence responsive to the evaluating and eliminating steps.

    摘要翻译： 一种用于使用基于轨迹的技术来检测视频序列中的移动对象的方法和相关联的装置，其通过用户界面并入人类交互。 该方法包括以下步骤：识别和评估视频帧中的连接分量集合，通过将所连接分量的特征与预定标准进行比较来过滤所连接分量的列表，识别跨多个帧的候选轨迹，评估候选轨迹以确定所选择的轨迹 通过使用界面消除不正确的轨迹，并响应于评估和消除步骤来处理所述视频序列中的图像。

    REDUCING CONTOURS IN DIGITAL IMAGES
    2.
    发明申请
    REDUCING CONTOURS IN DIGITAL IMAGES 有权
    减少数字图像中的轮廓

    公开(公告)号：US20090304270A1

    公开(公告)日：2009-12-10

    申请号：US12449046

    申请日：2008-01-18

    申请人： Sitaram Bhagavathy ,  Joan Llach ,  Jie fu Zhai

    发明人： Sitaram Bhagavathy ,  Joan Llach ,  Jie fu Zhai

    IPC分类号： G06K9/00 ,  G06K9/40

    CPC分类号： G06T5/002 ,  G06T2207/10024 ,  H04N1/409

    摘要： One or more implementations access a digital image containing one or more bands. Adjacent bands of the one or more bands have a difference in color resulting in a contour between the adjacent bands. The one or more implementations apply an algorithm to at least a portion of the digital image for reducing visibility of a contour. The algorithm is based on a value representing the fraction of pixels in a region of the digital image having a particular color value.

    摘要翻译： 一个或多个实现访问包含一个或多个频带的数字图像。 一个或多个频带的相邻频带具有不同的颜色，导致相邻频带之间的轮廓。 所述一个或多个实现将算法应用于数字图像的至少一部分，以减少轮廓的可视性。 该算法基于表示具有特定颜色值的数字图像的区域中的像素的分数的值。

    Adaptive pixel-based filtering
    3.
    发明申请
    Adaptive pixel-based filtering 有权
    自适应基于像素的滤波

    公开(公告)号：US20090278988A1

    公开(公告)日：2009-11-12

    申请号：US12308914

    申请日：2006-06-29

    申请人： Sitaram Bhagavathy ,  Joan Llach

    发明人： Sitaram Bhagavathy ,  Joan Llach

    IPC分类号： H04N5/222

    CPC分类号： H04N5/21 ,  G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182 ,  H04N19/105 ,  H04N19/117 ,  H04N19/162 ,  H04N19/182 ,  H04N19/537 ,  H04N19/593 ,  H04N19/86

    摘要： In an implementation, a pixel is selected from a target digital image. Multiple candidate pixels, from one or more digital images, are evaluated based on values of the multiple candidate pixels. For the selected pixel, a corresponding set of pixels is determined from the multiple candidate pixels based on the evaluations of the multiple candidate pixels and on whether a predetermined threshold number of pixels have been included in the corresponding set. Further for the selected pixel, a substitute value is determined based on the values of the pixels in the corresponding set of pixels. Various implementations described provide adaptive pixel-based spatio-temporal filtering of images or video to reduce film grain or noise. Implementations may achieve an “even” amount of noise reduction at each pixel while preserving as much picture detail as possible by, for example, averaging each pixel with a constant number, N, of temporally and/or spatially correlated pixels.

    摘要翻译： 在实现中，从目标数字图像中选择像素。 基于多个候选像素的值来评估来自一个或多个数字图像的多个候选像素。 对于所选择的像素，基于多个候选像素的评估以及相应组中是否包括预定阈值数量的像素，从多个候选像素确定相应的像素集合。 此外，对于所选择的像素，基于相应像素集合中的像素的值来确定替代值。 所描述的各种实现提供了对图像或视频的自适应基于像素的时空滤波以减少胶片颗粒或噪声。 实施方式可以在每个像素处实现“均匀”的噪声降低量，同时通过例如使用恒定数量N对时间和/或空间相关像素对每个像素进行平均，尽可能地保留尽可能多的图像细节。

    VIEW SYNTHESIS WITH HEURISTIC VIEW MERGING
    5.
    发明申请
    VIEW SYNTHESIS WITH HEURISTIC VIEW MERGING 审中-公开
    查看合成与视觉合并

    公开(公告)号：US20110148858A1

    公开(公告)日：2011-06-23

    申请号：US12737873

    申请日：2009-08-28

    申请人： Zefeng Ni ,  Dong Tian ,  Sitaram Bhagavathy ,  Joan Llach

    发明人： Zefeng Ni ,  Dong Tian ,  Sitaram Bhagavathy ,  Joan Llach

    IPC分类号： H04N13/00

    CPC分类号： H04N13/128 ,  H04N13/111 ,  H04N2213/003 ,  H04N2213/005

    摘要： Several implementations relate to view synthesis with heuristic view merging for 3D Video (3DV) applications. According to one aspect, a first candidate pixel from a first warped reference view and a second candidate pixel from a second warped reference view are assessed based on at least one of a backward synthesis process to assess a quality of the first and second candidate pixels, a hole distribution around the first and second candidate pixels, or on an amount of energy around the first and second candidate pixels above a specified frequency. The assessing occurs as part of merging at least the first and second warped reference views into a signal synthesized view. Based on the assessing, a result is determined for a given target pixel in the single synthesized view. The result may be determining a value for the given target pixel, or marking the given target pixel as a hole.

    摘要翻译： 几个实现涉及用于3D视频（3DV）应用的启发式视图合并的视图合成。 根据一个方面，基于评估第一和第二候选像素的质量的后向合成过程中的至少一个来评估来自第一翘曲参考视图的第一候选像素和来自第二翘曲参考视图的第二候选像素， 围绕第一和第二候选像素的孔分布，或者围绕指定频率之上的第一和第二候选像素周围的能量量。 评估是将至少第一和第二翘曲参考视图合并为信号合成视图的一部分。 基于评估，在单个合成视图中为给定目标像素确定结果。 结果可能是确定给定目标像素的值，或将给定的目标像素标记为孔。

    Video matting based on foreground-background constraint propagation
    7.
    发明授权
    Video matting based on foreground-background constraint propagation 有权
    基于前景背景约束传播的视频消隐

    公开(公告)号：US08611728B2

    公开(公告)日：2013-12-17

    申请号：US13138384

    申请日：2010-01-05

    申请人： Sitaram Bhagavathy ,  Joan Llach

    发明人： Sitaram Bhagavathy ,  Joan Llach

    IPC分类号： H04N5/93 ,  H04N9/80 ,  G11B27/00 ,  G06K9/34 ,  G06K9/00 ,  G06K9/74 ,  G06G5/00

    CPC分类号： G06T7/254 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/20092 ,  G06T2207/20096

    摘要： A method for propagating user-provided foreground-background constraint information for a first video frame to subsequent frames allows extraction of moving foreground objects with minimal user interaction. Video matting is performed wherein constraints derived from user input with respect to a first frame are propagated to subsequent frames using the estimated alpha matte of each frame. The matte of a frame is processed in order to arrive at a rough foreground-background segmentation which is then used for estimating the matte of the next frame. At each frame, the propagated constraints are used by an image matting method for estimating the corresponding matte which is in turn used for propagating the constraints to the next frame, and so on.

    摘要翻译： 用于将第一视频帧的用户提供的前景 - 背景约束信息传播到后续帧的方法允许以最小的用户交互提取移动的前景对象。 执行视频消隐，其中从相对于第一帧的用户输入导出的约束使用每帧的估计的α遮罩传播到后续帧。 处理帧的哑光以便获得粗糙的前景 - 背景分割，然后将其用于估计下一帧的无光泽。 在每个帧处，通过图像消隐方法使用传播的约束来估计相应的无光泽，其依次用于将约束传播到下一帧，等等。

    Automatic parameter estimation for adaptive pixel-based filtering
    8.
    发明授权
    Automatic parameter estimation for adaptive pixel-based filtering 有权

    公开(公告)号：US08467626B2

    公开(公告)日：2013-06-18

    申请号：US12311452

    申请日：2007-06-25

    申请人： Sitaram Bhagavathy ,  Joan Llach

    发明人： Sitaram Bhagavathy ,  Joan Llach

    IPC分类号： G06K9/40 ,  G06K9/20

    CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182

    摘要： One particular automatic parameter estimation method and apparatus estimates low level filtering parameters from one or more user controlled high-level filtering parameters. The high level filtering parameters are strength and quality, where strength indicates how much noise reduction will be performed, and quality indicates a tolerance which controls the balance between filtering uniformity and loss of detail. The low level filtering parameters that can be estimated include the spatial neighborhood and/or temporal neighborhood size from which pixel candidates are selected, and thresholds used to verify the “goodness” of the spatially or temporally predicted candidate pixels. More generally, a criterion for filtering digital image data is accessed, and a value is determined for a parameter for use in filtering digital image data, the value being determined based on whether the value results in the criterion being satisfied for at least a portion of a digital image.

    METHODS AND APPARATUS FOR SAMPLING-BASED SUPER RESOLUTION VIDEO ENCODING AND DECODING
    9.
    发明申请
    METHODS AND APPARATUS FOR SAMPLING-BASED SUPER RESOLUTION VIDEO ENCODING AND DECODING 有权
    基于采样的超分辨率视频编码和解码的方法和装置

    公开(公告)号：US20120294369A1

    公开(公告)日：2012-11-22

    申请号：US13574428

    申请日：2011-01-20

    申请人： Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

    发明人： Sitaram Bhagavathy ,  Joan Llach ,  Dong-Qing Zhang

    IPC分类号： H04N7/26 ,  H04N7/46 ,  H04N7/32

    CPC分类号： H04N19/577 ,  H04N19/119 ,  H04N19/12 ,  H04N19/132 ,  H04N19/137 ,  H04N19/172 ,  H04N19/20 ,  H04N19/33 ,  H04N19/46 ,  H04N19/527 ,  H04N19/537 ,  H04N19/573 ,  H04N19/59

    摘要： Methods and apparatus are provided for sampling-based super resolution video encoding and decoding. The encoding method receives high resolution pictures and generates low resolution pictures and metadata there from, the metadata for guiding post-decoding post-processing of the low resolution pictures and the metadata; and then encodes the low resolution pictures and the metadata using at least one encoder. The corresponding decoding method receives a bitstream and decodes low resolution pictures and metadata there from using a decoder; and then reconstructs high resolution pictures respectively corresponding to the low resolution pictures using the low resolution pictures and the metadata.

    摘要翻译： 提供了基于采样的超分辨率视频编码和解码的方法和装置。 编码方法接收高分辨率图像，并从其中生成低分辨率图像和元数据，用于引导低分辨率图像的后解码后处理的元数据和元数据; 然后使用至少一个编码器对低分辨率图像和元数据进行编码。 相应的解码方法接收比特流并且使用解码器解码低分辨率图像和元数据; 然后使用低分辨率图像和元数据重建分别对应于低分辨率图像的高分辨率图像。

    Video matting based on foreground-background constraint propagation
    10.
    发明申请
    Video matting based on foreground-background constraint propagation 有权
    基于前景背景约束传播的视频消隐

    公开(公告)号：US20110293247A1

    公开(公告)日：2011-12-01

    申请号：US13138384

    申请日：2010-01-05

    申请人： Sitaram Bhagavathy ,  Joan Llach

    发明人： Sitaram Bhagavathy ,  Joan Llach

    IPC分类号： G11B27/00

    CPC分类号： G06T7/254 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/20092 ,  G06T2207/20096

    摘要： A method for propagating user-provided foreground-background constraint information for a first video frame to subsequent frames allows extraction of moving foreground objects with minimal user interaction. Video matting is performed wherein constraints derived from user input with respect to a first frame are propagated to subsequent frames using the estimated alpha matte of each frame. The matte of a frame is processed in order to arrive at a rough foreground-background segmentation which is then used for estimating the matte of the next frame. At each frame, the propagated constraints are used by an image matting method for estimating the corresponding matte which is in turn used for propagating the constraints to the next frame, and so on.

    摘要翻译： 用于将第一视频帧的用户提供的前景 - 背景约束信息传播到后续帧的方法允许以最小的用户交互提取移动的前景对象。 执行视频消隐，其中从相对于第一帧的用户输入导出的约束使用每帧的估计的α遮罩传播到后续帧。 处理帧的哑光以便获得粗糙的前景 - 背景分割，然后将其用于估计下一帧的无光泽。 在每个帧处，通过图像消隐方法使用传播的约束来估计相应的无光泽，其依次用于将约束传播到下一帧，等等。