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公开(公告)号：US07587099B2
公开(公告)日：2009-09-08
申请号：US11340969
申请日：2006-01-27
CPC分类号： G06T5/003 , G06T5/002 , G06T2207/20076
摘要： An “Image Denoiser” provides a probabilistic process for denoising color images by segmenting an input image into regions, estimating statistics within each region, and then estimating a clean (or denoised) image using a probabilistic model of image formation. In one embodiment, estimated blur between each region is used to reduce artificial sharpening of region boundaries resulting from denoising the input image. In further embodiments, the estimated blur is used for additional purposes, including sharpening edges between one or more regions, and selectively blurring or sharpening one or more specific regions of the image (i.e., “selective focus”) while maintaining the original blurring between the various regions.
摘要翻译： “图像去噪器”提供了通过将输入图像分割成区域来去除彩色图像的概率过程，估计每个区域内的统计量，然后使用图像形成的概率模型来估计干净（或去噪）图像。 在一个实施例中，使用每个区域之间的估计模糊来减少由于对输入图像的去噪而导致的区域边界的人造锐化。 在另外的实施例中，估计的模糊被用于额外的目的，包括在一个或多个区域之间锐化边缘，以及选择性地模糊或锐化图像的一个或多个特定区域（即，“选择性聚焦”），同时保持原始模糊 各地区。
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公开(公告)号：US07548661B2
公开(公告)日：2009-06-16
申请号：US11384063
申请日：2006-03-17
申请人： Stephen Lin , Baining Guo , Sing Bing Kang , Yuanjie Zheng
发明人： Stephen Lin , Baining Guo , Sing Bing Kang , Yuanjie Zheng
IPC分类号： G06K9/40
CPC分类号： H04N5/3572 , G06T5/007 , G06T7/11 , G06T2207/10024 , G06T2207/20012 , G06T2207/20016
摘要： A system and process for determining the vignetting function of an image and using the function to correct for the vignetting is presented. The image can be any arbitrary image and no other images are required. The system and process is designed to handle both textured and untextured segments in order to maximize the use of available information. To extract vignetting information from an image, segmentation techniques are employed that locate image segments with reliable data for vignetting estimation. Within each image segment, the system and process capitalizes on frequency characteristics and physical properties of vignetting to distinguish it from other sources of intensity variation. The vignetting data acquired from segments are weighted according to a presented reliability measure to promote robustness in estimation.
摘要翻译： 提出了一种用于确定图像的渐晕功能并使用功能来校正渐晕的系统和过程。 图像可以是任意图像，并且不需要其他图像。 系统和过程被设计为处理纹理和非纹理段，以便最大限度地利用可用信息。 为了从图像中提取渐晕信息，采用定位图像片段以进行晕影估计的可靠数据的分割技术。 在每个图像片段中，系统和过程利用渐晕的频率特性和物理特性来区分其他强度变化的来源。 根据提出的可靠性度量对从片段获取的渐晕数据进行加权，以提高估计的鲁棒性。
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73.发明申请Strategies for extracting foreground information using flash and no-flash image pairs 有权使用闪存和无闪存映像对提取前台信息的策略公开(公告)号：US20080297621A1
公开(公告)日：2008-12-04
申请号：US11807448
申请日：2007-05-29
申请人： Jian Sun , Jian Sun , Sing Bing Kang , Xiaoou Tang , Heung-Yeung Shum
发明人： Jian Sun , Jian Sun , Sing Bing Kang , Xiaoou Tang , Heung-Yeung Shum
IPC分类号： H04N9/73
CPC分类号： H04N9/76 , G06T7/11 , G06T7/143 , G06T7/194 , G06T2207/10144 , H04N5/23232
摘要： A flash-based strategy is used to separate foreground information from background information within image information. In this strategy, a first image is taken without the use of flash. A second image is taken of the same subject matter with the use of flash. The foreground information in the flash image is illuminated by the flash to a much greater extent than the background information. Based on this property, the strategy applies processing to extract the foreground information from the background information. The strategy supplements the flash information by also taking into consideration motion information and color information.
摘要翻译： 基于闪存的策略用于将前景信息与图像信息中的背景信息分离。 在这个策略中，第一个图像是不使用闪光灯的。 使用闪光灯拍摄相同主题的第二张照片。 闪光灯中的前景信息被闪光灯照亮到比背景信息更大的程度。 基于此属性，该策略应用处理从背景信息中提取前景信息。 该策略通过考虑运动信息和颜色信息来补充闪光信息。
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公开(公告)号：US07363201B2
公开(公告)日：2008-04-22
申请号：US10980073
申请日：2004-11-02
CPC分类号： G06K9/4661 , G06K9/00268 , G06T7/521 , G06T15/506
摘要： In the described embodiment, methods and systems for processing facial image data for use in animation are described. In one embodiment, a system is provided that illuminates a face with illumination that is sufficient to enable the simultaneous capture of both structure data, e.g. a range or depth map, and reflectance properties, e.g. the diffuse reflectance of a subject's face. This captured information can then be used for various facial animation operations, among which are included expression recognition and expression transformation.
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公开(公告)号：US07356447B2
公开(公告)日：2008-04-08
申请号：US10836281
申请日：2004-04-30
CPC分类号： G06K9/4661 , G06K9/00268 , G06T7/521 , G06T15/506
摘要： In the described embodiment, methods and systems for processing facial image data for use in animation are described. In one embodiment, a system is provided that illuminates a face with illumination that is sufficient to enable the simultaneous capture of both structure data, e.g. a range or depth map, and reflectance properties, e.g. the diffuse reflectance of a subject's face. This captured information can then be used for various facial animation operations, among which are included expression recognition and expression transformation.
摘要翻译： 在所描述的实施例中，描述了用于处理用于动画的面部图像数据的方法和系统。 在一个实施例中，提供了一种系统，其利用足以使得能够同时捕获结构数据的照明来照亮面部，例如， 范围或深度图，以及反射率特性，例如。 受试者面部的漫反射。 然后，该捕获的信息可以用于各种面部动画操作，其中包括表达式识别和表达变换。
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76.发明授权System and process for optimal texture map reconstruction from multiple views 有权用于从多个视图获得最佳纹理贴图重建的系统和过程公开(公告)号：US07205998B2
公开(公告)日：2007-04-17
申请号：US11192639
申请日：2005-07-28
申请人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
发明人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
IPC分类号： G09G5/00
CPC分类号： G06T15/04
摘要： A system and process for reconstructing optimal texture maps from multiple views of a scene is described. In essence, this reconstruction is based on the optimal synthesis of textures from multiple sources. This is generally accomplished using basic image processing theory to derive the correct weights for blending the multiple views. Namely, the steps of reconstructing, warping, prefiltering, and resampling are followed in order to warp reference textures to a desired location, and to compute spatially-variant weights for optimal blending. These weights take into consideration the anisotropy in the texture projection and changes in sampling frequency due to foreshortening. The weights are combined and the computation of the optimal texture is treated as a restoration problem, which involves solving a linear system of equations. This approach can be incorporated in a variety of applications, such as texturing of 3D models, analysis by synthesis methods, super-resolution techniques, and view-dependent texture mapping.
摘要翻译： 描述用于从场景的多个视图重建最佳纹理图的系统和过程。 实质上，这种重建是基于来自多个源的纹理的最佳合成。 这通常使用基本图像处理理论来实现，以导出用于混合多个视图的正确权重。 即，遵循重构，翘曲，预过滤和重采样的步骤，以便将参考纹理扭曲到期望的位置，并计算用于最佳混合的空间变体权重。 这些权重考虑到纹理投影中的各向异性和由于缩短引起的采样频率的变化。 权重相结合，最优纹理的计算被视为恢复问题，其涉及求解线性方程组。 这种方法可以并入各种应用中，例如3D模型的纹理化，通过合成方法的分析，超分辨率技术和视图相关的纹理映射。
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公开(公告)号：US20060072852A1
公开(公告)日：2006-04-06
申请号：US11286567
申请日：2005-11-22
CPC分类号： G06T5/20 , G06K9/32 , G06K2009/2045 , G06T3/00 , G06T5/003 , G06T7/30 , G06T7/55 , G06T15/503
摘要： A system and method for deghosting mosaics provides a novel multiperspective plane sweep approach for generating an image mosaic from a sequence of still images, video images, scanned photographic images, computer generated images, etc. This multiperspective plane sweep approach uses virtual camera positions to compute depth maps for columns of overlapping pixels in adjacent images. Object distortions and ghosting caused by image parallax when generating the image mosaics are then minimized by blending pixel colors, or grey values, for each computed depth to create a common composite area for each of the overlapping images. Further, the multiperspective plane sweep approach described herein is both computationally efficient, and applicable to both the case of limited overlap between the images used for creating the image mosaics, and to the case of extensive or increased image overlap.
摘要翻译： 用于消除幻影的马赛克的系统和方法提供了一种新颖的多平面扫描方法，用于从静止图像，视频图像，扫描摄影图像，计算机生成的图像等的序列生成图像马赛克。该多平面扫描方法使用虚拟相机位置来计算 相邻图像中重叠像素列的深度图。 然后通过为每个计算的深度混合像素颜色或灰度值来最小化由图像视差产生的图像马赛克引起的对象失真和重影，以为每个重叠图像创建公共复合区域。 此外，本文描述的多平面扫描方法在计算上是有效的，并且适用于用于创建图像马赛克的图像之间的有限重叠的情况以及广泛或增加的图像重叠的情况。
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公开(公告)号：US07023472B1
公开(公告)日：2006-04-04
申请号：US09298372
申请日：1999-04-23
申请人： Sing Bing Kang , Richard S. Weiss
发明人： Sing Bing Kang , Richard S. Weiss
IPC分类号： H04N17/001 , H04N17/02 , H04N9/64
CPC分类号： G06T7/80
摘要： An imaging device is calibrated using a flat, featureless surface and uniform illumination, relying on the effect of off-axis illumination and vignetting on the reduction of light into the camera at off-axis angles. The effect of the tilt of the camera is also considered. These effects are used to extract intrinsic camera parameters including focal length, principal point, aspect ratio and skew.
摘要翻译： 使用平坦的，无特征的表面和均匀的照明来校准成像装置，这取决于离轴照明和渐晕的影响，在离轴角度将光减少到相机中。 也考虑了相机倾斜的影响。 这些效果用于提取包括焦距，主点，宽高比和偏斜的本征相机参数。
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公开(公告)号：US06999095B2
公开(公告)日：2006-02-14
申请号：US10983193
申请日：2004-11-05
申请人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
发明人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
IPC分类号： G09G5/00
CPC分类号： G06T11/001
摘要： A system and process for reconstructing optimal texture maps from multiple views of a scene is described. In essence, this reconstruction is based on the optimal synthesis of textures from multiple sources. This is generally accomplished using basic image processing theory to derive the correct weights for blending the multiple views. Namely, the steps of reconstructing, warping, prefiltering, and resampling are followed in order to warp reference textures to a desired location, and to compute spatially-variant weights for optimal blending. These weights take into consideration the anisotropy in the texture projection and changes in sampling frequency due to foreshortening. The weights are combined and the computation of the optimal texture is treated as a restoration problem, which involves solving a linear system of equations. This approach can be incorporated in a variety of applications, such as texturing of 3D models, analysis by synthesis methods, super-resolution techniques, and view-dependent texture mapping.
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公开(公告)号：US06825850B2
公开(公告)日：2004-11-30
申请号：US10283562
申请日：2002-10-30
申请人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
发明人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
IPC分类号： G09G500
CPC分类号： G06T11/001
摘要： A system and process for reconstructing optimal texture maps from multiple views of a scene is described. In essence, this reconstruction is based on the optimal synthesis of textures from multiple sources. This is generally accomplished using basic image processing theory to derive the correct weights for blending the multiple views. Namely, the steps of reconstructing, warping, prefiltering, and resampling are followed in order to warp reference textures to a desired location, and to compute spatially-variant weights for optimal blending. These weights take into consideration the anisotropy in the texture projection and changes in sampling frequency due to foreshortening. The weights are combined and the computation of the optimal texture is treated as a restoration problem, which involves solving a linear system of equations. This approach can be incorporated in a variety of applications, such as texturing of 3D models, analysis by synthesis methods, super-resolution techniques, and view-dependent texture mapping.
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