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1. 发明授权

US06968299B1 Method and apparatus for reconstructing a surface using a ball-pivoting algorithm 失效
标题翻译：使用球摆动算法重构曲面的方法和装置
公开(公告)号：US06968299B1
公开(公告)日：2005-11-22
申请号：US09549432
申请日：2000-04-14
申请人： Fausto Bernardini , Joshua David Mittleman , Holly E. Rushmeier , Claudio T. Silva , Gabriel Taubin
发明人： Fausto Bernardini , Joshua David Mittleman , Holly E. Rushmeier , Claudio T. Silva , Gabriel Taubin
IPC分类号： G06F17/10 , G06F17/17 , G06T17/20
CPC分类号： G06K9/48 , G06F17/175 , G06T17/20
摘要： A method and apparatus are disclosed for finding a triangle mesh that interpolates a set of points obtained from a scanning system. A ball-pivoting algorithm computes a triangle mesh interpolating a given point cloud. The disclosed ball-pivoting algorithm triangulates a set of points by “rolling” a ball of radius r on the point cloud. The points are surface samples acquired with multiple range scans of an object. The ball-pivoting algorithm starts with a seed triangle, and pivots the ball of a given radius, r, around an edge of the triangle. During the pivoting operation, the ball revolves around the edge while keeping in contact with the edge's endpoints. The ball pivots until it touches another scan point, forming another triangle. The ball-pivoting operation continues until all reachable edges have been tried, and then starts from another seed triangle, until all scan points have been considered.
摘要翻译：公开了一种用于找到内插从扫描系统获得的一组点的三角形网格的方法和装置。球转动算法计算内插给定点云的三角形网格。公开的球枢轴算法通过在点云上“滚动”半径为r的球来对一组点进行三角测量。这些点是通过对象的多范围扫描获得的表面样本。球转动算法以种子三角形开始，并绕着三角形的边缘使给定半径r的球枢转。在枢转操作期间，球保持与边缘的端点保持接触，围绕边缘旋转。球枢转直到它接触另一个扫描点，形成另一个三角形。球转动操作继续，直到所有可到达的边缘都被尝试，然后从另一个种子三角形开始，直到考虑到所有扫描点为止。

2. 发明授权

US06455835B1 System, method, and program product for acquiring accurate object silhouettes for shape recovery 有权
标题翻译：用于获取形状恢复的准确对象轮廓的系统，方法和程序产品
公开(公告)号：US06455835B1
公开(公告)日：2002-09-24
申请号：US09825685
申请日：2001-04-04
申请人： Fausto Bernardini , Henning Biermann , Holly E. Rushmeier , Silvio Savarese , Gabriel Taubin
发明人： Fausto Bernardini , Henning Biermann , Holly E. Rushmeier , Silvio Savarese , Gabriel Taubin
IPC分类号： H01L2700
CPC分类号： G01B11/2433 , G06T7/564
摘要： Disclosed are methods and apparatus for obtaining the shape of an object by observing silhouettes of the object. At least one point light source is placed in front of the object, thereby casting a shadow of the object on a translucent panel that is placed behind the object. A camera, or other imaging device, captures an image of the shadow from behind the translucent panel. The object's full silhouette is obtained from the image of the shadow as the region of the shadow is substantially darker than the region outside of the shadow. The full silhouette thus obtained may be processed by any suitable shape from silhouette algorithm, and thus objects are not limited in topological type. A color image of the object can optionally be obtained simultaneously with the shadow image using a camera placed on the same side of the object as the light source. Multiple silhouettes can be captured for one object position, reducing the number of rotations needed on a turntable system, and reducing the post-processing needed to register geometries obtained from multiple different positions.
摘要翻译：公开了通过观察物体的轮廓来获得物体的形状的方法和装置。至少一个点光源被放置在物体的前面，从而将物体的阴影投射在放置在物体后面的半透明面板上。相机或其他成像设备从半透明面板后面捕获阴影的图像。当阴影的区域比阴影之外的区域更暗时，物体的完整轮廓可以从阴影的图像中获得。由此获得的完整轮廓可以通过剪影算法的任何合适的形状进行处理，因此对象不限于拓扑类型。可以使用放置在与光源相同的对象侧的照相机与阴影图像同时地获得对象的彩色图像。可以为一个对象位置捕获多个剪影，减少转盘系统上所需的旋转数量，并减少从多个不同位置获取的对几何进行注册所需的后处理。

3. 发明授权

US06686921B1 Method and apparatus for acquiring a set of consistent image maps to represent the color of the surface of an object 失效
标题翻译：用于获取一组一致的图像映射以表示对象的表面的颜色的方法和装置
公开(公告)号：US06686921B1
公开(公告)日：2004-02-03
申请号：US09629673
申请日：2000-08-01
申请人： Holly E. Rushmeier , Fausto Bernardini
发明人： Holly E. Rushmeier , Fausto Bernardini
IPC分类号： G09G502
CPC分类号： G06T17/10 , G06T7/586 , G06T17/20 , G06T2200/08
摘要： A method and system for deriving colors from photometric calculations with adjustment by a global color registration process. Information from a low spatial resolution mesh representation of the object is combined with higher resolution color images from a photometric system. The colors computed using the low spatial resolution mesh representation are made consistent from image to image such that, when the images are combined, the resultant image of the object exhibits substantially seamless, artifact-free surface color characteristics.
摘要翻译：一种通过全局颜色注册过程进行调整从光度计算中导出颜色的方法和系统。来自物体的低空间分辨率网格表示的信息与来自光度测量系统的较高分辨率彩色图像组合。使用低空间分辨率网格表示计算的颜色从图像到图像一致，使得当图像被组合时，所得到的对象的图像显示出基本上无缝的，无伪影的表面颜色特性。

4. 发明授权

US07257250B2 System, method, and program product for extracting a multiresolution quadrilateral-based subdivision surface representation from an arbitrary two-manifold polygon mesh 有权
标题翻译：用于从任意两歧管多边形网格提取多分辨率四边形的细分表面表示的系统，方法和程序产品
公开(公告)号：US07257250B2
公开(公告)日：2007-08-14
申请号：US10696348
申请日：2003-10-29
申请人： Ioana M. Boier-Martin , Jingyi Jin , Holly E. Rushmeier , Fausto Bernardini
发明人： Ioana M. Boier-Martin , Jingyi Jin , Holly E. Rushmeier , Fausto Bernardini
IPC分类号： G06K9/00
CPC分类号： G06K9/00 , G06T17/20
摘要： Disclosed is an improved computer system, method, and program product that has one or more input devices for receiving one or more input meshes representing a three dimensional model. The three dimensional model is capable of being represented as a 2-manifold triangular mesh. A conversion process automatically converts the input mesh to a multiresolution quadrilateral-based subdivision surface (MQSS) representation.
摘要翻译：公开了一种改进的计算机系统，方法和程序产品，其具有用于接收表示三维模型的一个或多个输入网格的一个或多个输入设备。三维模型能够被表示为2歧管三角形网格。转换过程自动将输入网格转换为基于多分辨率四边形的细分表面（MQSS）表示。

5. 发明授权

US06750873B1 High quality texture reconstruction from multiple scans 有权
标题翻译：高质量的纹理重构从多次扫描
公开(公告)号：US06750873B1
公开(公告)日：2004-06-15
申请号：US09603928
申请日：2000-06-27
申请人： Fausto Bernardini , Ioana M. Martin , Holly E. Rushmeier
发明人： Fausto Bernardini , Ioana M. Martin , Holly E. Rushmeier
IPC分类号： G06K900
CPC分类号： G06T17/10 , G06T7/55 , G06T15/04 , G06T2200/08
摘要： A system and method is disclosed for constructing a digital model of an object. The system includes an imaging system for generating object surface scan data from a plurality of surface scans, the surface scan data having a first resolution and representing the object from a plurality of viewpoints. The imaging system further generates image data having a second, higher resolution than the surface scan data for representing the object from the plurality of viewpoints. The system further includes a data processor for iteratively registering the surface scan data for the plurality of surface scans, using the image data, and for reconstructing substantially seamless surface texture data for the model using weights that reflect a level of confidence in the data at a plurality of surface points.
摘要翻译：公开了一种用于构建物体的数字模型的系统和方法。该系统包括用于从多个表面扫描生成物体表面扫描数据的成像系统，所述表面扫描数据具有第一分辨率并且从多个视点表示对象。成像系统进一步生成具有比用于从多个视点表示对象的表面扫描数据的第二更高分辨率的图像数据。该系统还包括数据处理器，用于使用图像数据迭代地注册用于多个表面扫描的表面扫描数据，并且用于使用反映在一个或多个数据中的数据的置信度的重量来重建该模型的基本上无缝的表面纹理数据多个表面点。

6. 发明授权

US06677942B1 Method and apparatus for acquiring normals maps consistent with low spatial resolution meshes 有权
标题翻译：用于获取与低空间分辨率网格一致的法线图的方法和装置
公开(公告)号：US06677942B1
公开(公告)日：2004-01-13
申请号：US09631043
申请日：2000-08-01
申请人： Holly E. Rushmeier , Fausto Bernardini
发明人： Holly E. Rushmeier , Fausto Bernardini
IPC分类号： G06T1700
CPC分类号： G06T17/20
摘要： A method, system and computer program for obtaining a digital model of an object. The method includes steps of (a) generating a low spatial resolution numerical representation of an object, such as a triangular mesh representation; (b) generating higher spatial resolution images of the object using a photometric subsystem, having a camera and a lighting source; and (c) computing normals maps using the low resolution numerical representation to estimate a distance from the camera to points on the object and to adjust relative light source intensities so as to correct for uncertainties in distances and light source intensities. A feature of this method is that the computed normals maps are made consistent over the object.
摘要翻译：一种用于获得对象的数字模型的方法，系统和计算机程序。该方法包括以下步骤：（a）生成对象的低空间分辨率数字表示，例如三角形网格表示; （b）使用具有相机和照明源的光度子系统产生所述物体的较高空间分辨率图像; 和（c）使用低分辨率数字表示法计算法线图，以估计从相机到物体上的点的距离，并调整相对光源强度，以便校正距离和光源强度的不确定性。该方法的一个特点是计算的法线图在物体上保持一致。

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