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1. 发明申请

US20140002746A1 Temporal Matte Filter for Video Matting 有权
标题翻译：视频消光的时域滤光片
公开(公告)号：US20140002746A1
公开(公告)日：2014-01-02
申请号：US13538712
申请日：2012-06-29
申请人： Xue Bai , Jue Wang , David P. Simons
发明人： Xue Bai , Jue Wang , David P. Simons
IPC分类号： H04N5/21
CPC分类号： H04N5/21 , G06T7/11 , G06T7/174 , G06T7/194 , G06T2207/10016 , G06T2207/10024 , G06T2207/20104 , G06T2207/20161
摘要： Methods and apparatus for temporal matte filtering. Temporal matte filtering methods are described that improve the temporal coherence of alpha mattes for a video sequence while maintaining the matte structures on individual frames. The temporal matte filter may implement a level-set-based matte averaging method. In the level-set-based matte averaging method, two or more input alpha mattes are obtained. Level set curves are generated for the two or more alpha mattes. An averaged level set is computed from the two or more level sets according to a distance-transform-based technique. A temporally smoothed alpha matte may then be reconstructed by interpolating pixel alpha values between the inner and outer level set curves of the averaged level set. The alpha mattes can be optionally warped towards a center frame according to an optical flow technique before the averaging operation performed by the temporal matte filter.
摘要翻译：时间哑光滤波的方法和装置。描述了时间无光泽滤波方法，其改善了视频序列的α遮罩的时间相干性，同时保持了单个帧上的消光结构。时间哑光滤波器可以实现基于电平集的无光均衡方法。在基于水平集的遮罩平均方法中，获得两个或更多个输入alpha遮罩。为两个或更多个alpha遮罩生成级别设置曲线。根据基于距离变换的技术，从两个或多个级别集计算平均级别集合。然后可以通过在平均水平集的内部和外部水平设置曲线之间内插像素α值来重构时间平滑的阿尔法无光泽。在由时间哑光滤波器执行的平均化操作之前，可以根据光学流技术，将alpha哑光可选地朝向中心框架弯曲。

2. 发明授权

US08792718B2 Temporal matte filter for video matting 有权
标题翻译：用于视频消光的时间无光泽滤光片
公开(公告)号：US08792718B2
公开(公告)日：2014-07-29
申请号：US13538712
申请日：2012-06-29
申请人： Xue Bai , Jue Wang , David P. Simons
发明人： Xue Bai , Jue Wang , David P. Simons
IPC分类号： G06K9/34 , G06K9/48 , G06K9/40
CPC分类号： H04N5/21 , G06T7/11 , G06T7/174 , G06T7/194 , G06T2207/10016 , G06T2207/10024 , G06T2207/20104 , G06T2207/20161
摘要： Methods and apparatus for temporal matte filtering. Temporal matte filtering methods are described that improve the temporal coherence of alpha mattes for a video sequence while maintaining the matte structures on individual frames. The temporal matte filter may implement a level-set-based matte averaging method. In the level-set-based matte averaging method, two or more input alpha mattes are obtained. Level set curves are generated for the two or more alpha mattes. An averaged level set is computed from the two or more level sets according to a distance-transform-based technique. A temporally smoothed alpha matte may then be reconstructed by interpolating pixel alpha values between the inner and outer level set curves of the averaged level set. The alpha mattes can be optionally warped towards a center frame according to an optical flow technique before the averaging operation performed by the temporal matte filter.
摘要翻译：时间哑光滤波的方法和装置。描述了时间无光泽滤波方法，其改善了视频序列的α遮罩的时间相干性，同时保持了单个帧上的消光结构。时间哑光滤波器可以实现基于电平集的无光均衡方法。在基于水平集的遮罩平均方法中，获得两个或更多个输入alpha遮罩。为两个或更多个alpha遮罩生成级别设置曲线。根据基于距离变换的技术，从两个或多个级别集计算平均级别集合。然后可以通过在平均水平集的内部和外部水平设置曲线之间内插像素α值来重构时间平滑的阿尔法无光泽。在由时间哑光滤波器执行的平均化操作之前，可以根据光学流技术，将alpha哑光可选地朝向中心框架弯曲。

3. 发明授权

US08520975B2 Methods and apparatus for chatter reduction in video object segmentation using optical flow assisted gaussholding 有权
标题翻译：使用光流辅助高斯视频对象分割的颤振减少的方法和装置
公开(公告)号：US08520975B2
公开(公告)日：2013-08-27
申请号：US12871719
申请日：2010-08-30
申请人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
发明人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
IPC分类号： G06K9/34 , G06K9/00 , G06K9/62 , G06K9/20 , G06K9/36 , H04N1/387 , H04N5/225 , H04N7/12 , H04N11/02 , H04N11/04 , H04B1/66 , G09G5/00
CPC分类号： G06T7/20 , G06K9/6277 , G06T7/12 , G06T7/143 , G06T7/149 , G06T2207/10024 , G06T2207/20121 , G06T2207/20124 , G06T2207/30196
摘要： Systems, methods, and computer-readable storage media for chatter reduction in video object segmentation using optical flow assisted gaussholding. An optical flow assisted gaussholding method may be applied to segmentation masks generated for a video sequence. For each frame of at least some frames in a video sequence, for each of one or more other frames prior to and one or more other frames after the current frame, optical flow is computed for the other frame in relation to the current frame and used to warp the contour of the segmentation mask of the other frame to generate warped segmentation mask for the other frames. The weighted average of the warpedsegmentation masks and the segmentation mask of the current frame is then computed; this weighted average may be blurred spatially, for example using a Gaussian filter. The initial smoothed mask may be thresholded to produce a binary smoothed mask.
摘要翻译：系统，方法和计算机可读存储介质，用于使用光流辅助高斯跟踪的视频对象分割中的抖动减少。可以将光流辅助高斯跟踪方法应用于为视频序列生成的分割掩码。对于视频序列中的至少一些帧的每帧，对于在当前帧之前和之后的一个或多个其他帧之前的一个或多个其他帧中的每一帧，针对当前帧针对另一帧计算光流，并使用以扭曲另一帧的分割掩模的轮廓以产生其他帧的翘曲分割掩码。然后计算翘曲分割蒙版的加权平均值和当前帧的分割蒙版; 该加权平均值可能在空间上模糊，例如使用高斯滤波器。初始平滑掩模可以被阈值化以产生二进制平滑掩模。

4. 发明申请

US20140003719A1 Adaptive Trimap Propagation for Video Matting 有权
标题翻译：视频消隐的自适应Trimap传播
公开(公告)号：US20140003719A1
公开(公告)日：2014-01-02
申请号：US13538718
申请日：2012-06-29
申请人： Xue Bai , Jue Wang , David P. Simons
发明人： Xue Bai , Jue Wang , David P. Simons
IPC分类号： G06K9/34
CPC分类号： G06T7/269 , G06T7/194 , G06T2207/10016
摘要： Methods and apparatus for adaptive trimap propagation. Methods are described that allow a trimap to be propagated from one frame to the next in a temporally coherent way. A radius-based method propagates automatically computed local trimap radii from frame to frame. A mesh-based method employs pins on the binary segmentation boundary and a mesh generated for the unknown region; the pins are tracked from one frame to the next according to an optical flow technique, the mesh is deformed from one frame to the next according to the movement of the pins, and the adaptive trimap is then warped according to the deformed mesh. These methods can be used separately, or the first method can be used to propagate some regions of the adaptive trimap, and the second method can be used to propagate other regions of the adaptive trimap.
摘要翻译：自适应微分法传播的方法和装置。描述了允许以时间上相干的方式从一个帧传播到下一个帧的方法。基于半径的方法自动传播计算的局部微分半径从帧到帧。基于网格的方法使用二进制分割边界上的引脚和为未知区域生成的网格; 根据光流技术，针脚从一帧到下一个跟踪，根据销的移动，网格从一帧变形到下一帧，然后根据变形的网格扭曲自适应微调。这些方法可以单独使用，或者第一种方法可以用于传播自适应微调的一些区域，第二种方法可以用于传播自适应微调的其他区域。

5. 发明授权

US08290253B1 Method and apparatus for applying Gaussian Mixture Models to local image patches using an adaptive color lookup table 有权
标题翻译：使用自适应颜色查找表将高斯混合模型应用于局部图像补丁的方法和装置
公开(公告)号：US08290253B1
公开(公告)日：2012-10-16
申请号：US12609590
申请日：2009-10-30
申请人： Jue Wang , David P. Simons , Xue Bai
发明人： Jue Wang , David P. Simons , Xue Bai
IPC分类号： G06K9/00
CPC分类号： G06K9/6221 , G06K9/4652 , G06T7/11 , G06T7/149
摘要： A method, system, and computer-readable storage medium for applying Gaussian Mixture Models (GMMs) to local image patches using an adaptive color lookup table. Per-channel color quantization may be performed to find representative colors for a local image patch. Each combination of the representative values corresponds to a representative color. The probabilities of the representative colors may be computed using a local GMM color model and stored to corresponding entries in an adaptive color lookup table. For every pixel in an image patch, the closest representative color may be found, and the corresponding probability may be retrieved from the lookup table and used for the pixel. The method may, for example, be applied to each local window in a method for automatically determining segmentation in a digital video image sequence to calculate the foreground probabilities for the pixels in a propagated classifier via a GMM.
摘要翻译：一种用于使用自适应颜色查找表将高斯混合模型（GMM）应用于本地图像块的方法，系统和计算机可读存储介质。可以执行每通道颜色量化以找到局部图像贴片的代表性颜色。代表值的每个组合对应于代表性颜色。代表颜色的概率可以使用本地GMM颜色模型计算并存储到自适应颜色查找表中的相应条目。对于图像补丁中的每个像素，可以找到最接近的代表颜色，并且可以从查找表中检索相应的概率并将其用于该像素。例如，该方法可以在用于自动确定数字视频图像序列中的分割的方法中应用于每个局部窗口，以通过GMM计算传播分类器中的像素的前景概率。

6. 发明授权

US08897562B2 Adaptive trimap propagation for video matting 有权
标题翻译：用于视频消光的自适应色差传播
公开(公告)号：US08897562B2
公开(公告)日：2014-11-25
申请号：US13538718
申请日：2012-06-29
申请人： Xue Bai , Jue Wang , David P. Simons
发明人： Xue Bai , Jue Wang , David P. Simons
IPC分类号： G06K9/34
CPC分类号： G06T7/269 , G06T7/194 , G06T2207/10016
摘要： Methods and apparatus for adaptive trimap propagation. Methods are described that allow a trimap to be propagated from one frame to the next in a temporally coherent way. A radius-based method propagates automatically computed local trimap radii from frame to frame. A mesh-based method employs pins on the binary segmentation boundary and a mesh generated for the unknown region; the pins are tracked from one frame to the next according to an optical flow technique, the mesh is deformed from one frame to the next according to the movement of the pins, and the adaptive trimap is then warped according to the deformed mesh. These methods can be used separately, or the first method can be used to propagate some regions of the adaptive trimap, and the second method can be used to propagate other regions of the adaptive trimap.
摘要翻译：自适应微分法传播的方法和装置。描述了允许以时间上相干的方式从一个帧传播到下一个帧的方法。基于半径的方法自动传播计算的局部微分半径从帧到帧。基于网格的方法使用二进制分割边界上的引脚和为未知区域生成的网格; 根据光流技术，针脚从一帧到下一个跟踪，根据销的移动，网格从一帧变形到下一帧，然后根据变形的网格扭曲自适应微调。这些方法可以单独使用，或者第一种方法可以用于传播自适应微调的一些区域，第二种方法可以用于传播自适应微调的其他区域。

7. 发明申请

US20130121577A1 Methods and Apparatus for Chatter Reduction in Video Object Segmentation Using Optical Flow Assisted Gaussholding 有权
标题翻译：使用光流辅助Gaussholding的视频对象分割中抖动减少的方法和装置
公开(公告)号：US20130121577A1
公开(公告)日：2013-05-16
申请号：US12871719
申请日：2010-08-30
申请人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
发明人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
IPC分类号： G06K9/34
CPC分类号： G06T7/20 , G06K9/6277 , G06T7/12 , G06T7/143 , G06T7/149 , G06T2207/10024 , G06T2207/20121 , G06T2207/20124 , G06T2207/30196
摘要： Systems, methods, and computer-readable storage media for chatter reduction in video object segmentation using optical flow assisted gaussholding. An optical flow assisted gaussholding method may be applied to segmentation masks generated for a video sequence. For each frame of at least some frames in a video sequence, for each of one or more other frames prior to and one or more other frames after the current frame, optical flow is computed for the other frame in relation to the current frame and used to warp the contour of the segmentation mask of the other frame to generate warped segmentation mask for the other frames. The weighted average of the warpedsegmentation masks and the segmentation mask of the current frame is then computed; this weighted average may be blurred spatially, for example using a Gaussian filter. The initial smoothed mask may be thresholded to produce a binary smoothed mask.
摘要翻译：系统，方法和计算机可读存储介质，用于使用光流辅助高斯跟踪的视频对象分割中的抖动减少。光流辅助高斯保留方法可以应用于为视频序列生成的分割掩码。对于视频序列中的至少一些帧的每帧，对于在当前帧之前和之后的一个或多个其他帧之前的一个或多个其他帧中的每一帧，针对当前帧针对另一帧计算光流，并使用以扭曲另一帧的分割掩模的轮廓以产生其他帧的翘曲分割掩码。然后计算翘曲分割蒙版的加权平均值和当前帧的分割蒙版; 该加权平均值可能在空间上模糊，例如使用高斯滤波器。初始平滑掩模可以被阈值化以产生二进制平滑掩模。

8. 发明授权

US08358691B1 Methods and apparatus for chatter reduction in video object segmentation using a variable bandwidth search region 有权
公开(公告)号：US08358691B1
公开(公告)日：2013-01-22
申请号：US12871724
申请日：2010-08-30
申请人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
发明人： Jue Wang , David P. Simons , Daniel M. Wilk , Xue Bai
IPC分类号： H04N7/26 , G06K9/00 , G06K9/48
CPC分类号： G06T7/20 , G06K9/6277 , G06T7/12 , G06T7/143 , G06T7/149 , G06T2207/10024 , G06T2207/20121 , G06T2207/20124 , G06T2207/30196
摘要： Systems, methods, and computer-readable storage media for chatter reduction in video object segmentation using a variable bandwidth search region. A variable bandwidth search region generation method may be applied to a uniform search region to generate a variable bandwidth search region that reduces the search range for segmentation methods such as a graph cut method. The method may identify parts of the contour that are moving slowly, and reduce the search region bandwidth in those places to stabilize the segmentation. This method may determine a bandwidth for each of a plurality of local windows of an image according to an estimate of how much an object in the image has moved from a previous image. The method may blend the bandwidths for the plurality of local windows to generate a blended map. The method may then generate a variable bandwidth search region for an object according to the blended map.

9. 发明申请

US20140016877A1 Systems And Methods For Rolling Shutter Artifact Repair 有权
标题翻译：滚动快门人工修复的系统和方法
公开(公告)号：US20140016877A1
公开(公告)日：2014-01-16
申请号：US13550031
申请日：2012-07-16
申请人： David P. Simons , Daniel Wilk , Xue Bai
发明人： David P. Simons , Daniel Wilk , Xue Bai
IPC分类号： G06T5/00
CPC分类号： G06T3/4038 , G06T3/0093 , G06T5/003 , H04N1/3876
摘要： Systems and methods for rolling shutter artifact repair are disclosed. For example, one disclosed method includes the steps of receiving two frames (F0, F2) of a video, identifying a first plurality of features in frame F0 and a second plurality of features in frame F2, determining movements of corresponding features in the first and second pluralities of features, generating a mesh based on the first and second pluralities of features and the movements, and generating a warped frame (F0′) based on the mesh
摘要翻译：公开了用于滚动快门伪影修复的系统和方法。例如，一种公开的方法包括以下步骤：接收视频的两个帧（F0，F2），识别帧F0中的第一多个特征和帧F2中的第二多个特征，确定第一和第二帧中相应特征的运动，第二多个特征，基于第一和第二多个特征和运动生成网格，并且基于网格生成翘曲框架（F0'）

10. 发明授权

US08731329B2 Systems and methods for rolling shutter artifact repair 有权
标题翻译：滚动快门伪影修复的系统和方法
公开(公告)号：US08731329B2
公开(公告)日：2014-05-20
申请号：US13550031
申请日：2012-07-16
申请人： David P. Simons , Daniel Wilk , Xue Bai
发明人： David P. Simons , Daniel Wilk , Xue Bai
IPC分类号： G06K9/36 , G06T3/40 , H04N1/387
CPC分类号： G06T3/4038 , G06T3/0093 , G06T5/003 , H04N1/3876
摘要： Systems and methods for rolling shutter artifact repair are disclosed. For example, one disclosed method includes the steps of receiving two frames (F0, F2) of a video, identifying a first plurality of features in frame F0 and a second plurality of features in frame F2, determining movements of corresponding features in the first and second pluralities of features, generating a mesh based on the first and second pluralities of features and the movements, and generating a warped frame (F0′) based on the mesh
摘要翻译：公开了用于滚动快门伪影修复的系统和方法。例如，一种公开的方法包括以下步骤：接收视频的两个帧（F0，F2），识别帧F0中的第一多个特征和帧F2中的第二多个特征，确定第一和第二帧中相应特征的运动，第二多个特征，基于第一和第二多个特征和运动生成网格，并且基于网格生成翘曲框架（F0'）

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