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1.发明授权System, method, and program product for acquiring accurate object silhouettes for shape recovery 有权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
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。
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2.发明授权Method and apparatus for reconstructing a surface using a ball-pivoting algorithm 失效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
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。
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3.发明授权System, method, and program product for extracting a multiresolution quadrilateral-based subdivision surface representation from an arbitrary two-manifold polygon mesh 有权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
IPC分类号： G06K9/00
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。
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公开(公告)号：US06750873B1
公开(公告)日：2004-06-15
申请号：US09603928
申请日：2000-06-27
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。
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5.发明授权Method and apparatus for acquiring normals maps consistent with low spatial resolution meshes 有权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
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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6.发明授权Method and apparatus for acquiring a set of consistent image maps to represent the color of the surface of an object 失效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
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。
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公开(公告)号：US07167173B2
公开(公告)日：2007-01-23
申请号：US10665231
申请日：2003-09-17
IPC分类号： G06T15/00
CPC分类号： G06T19/20 , G06T7/507 , G06T15/50 , G06T2219/2012 , G06T2219/2021
摘要： Disclosed are an image editing user interface system and method. The system includes one or more computers with one or more graphical user interfaces, and a receiving process for receiving one or more rendered two dimensional images on the computer graphical user interface. Each two dimensional image represents reflected light from a lit three dimensional object model, and the reflective light at each point of the two dimensional image corresponds to an object point on the three dimensional object model. The system further includes a changing process for changing a portion of the two dimensional image by changing the light intensity at a set of one or more points on the two dimensional image. The change in light intensity at the set of points causes a change in the three dimensional model to correspond to the change in the light intensity.
摘要翻译： 公开了一种图像编辑用户界面系统和方法。 该系统包括具有一个或多个图形用户界面的一个或多个计算机以及用于在计算机图形用户界面上接收一个或多个渲染的二维图像的接收过程。 每个二维图像表示来自点亮的三维对象模型的反射光，并且二维图像的每个点处的反射光对应于三维对象模型上的对象点。 该系统还包括通过改变二维图像上的一个或多个点的集合的光强度来改变二维图像的一部分的改变处理。 在该组点处的光强度的变化导致三维模型的变化以对应于光强度的变化。
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公开(公告)号：US20050062739A1
公开(公告)日：2005-03-24
申请号：US10665231
申请日：2003-09-17
CPC分类号： G06T19/20 , G06T7/507 , G06T15/50 , G06T2219/2012 , G06T2219/2021
摘要： Disclosed are an image editing user interface system and method. The system includes one or more computers with one or more graphical user interfaces, and a receiving process for receiving one or more rendered two dimensional images on the computer graphical user interface. Each two dimensional image represents reflected light from a lit three dimensional object model, and the reflective light at each point of the two dimensional image corresponds to an object point on the three dimensional object model. The system further includes a changing process for changing a portion of the two dimensional image by changing the light intensity at a set of one or more points on the two dimensional image. The change in light intensity at the set of points causes a change in the three dimensional model to correspond to the change in the light intensity.
摘要翻译： 公开了一种图像编辑用户界面系统和方法。 该系统包括具有一个或多个图形用户界面的一个或多个计算机以及用于在计算机图形用户界面上接收一个或多个渲染的二维图像的接收过程。 每个二维图像表示来自点亮的三维对象模型的反射光，并且二维图像的每个点处的反射光对应于三维对象模型上的对象点。 该系统还包括通过改变二维图像上的一个或多个点的集合的光强度来改变二维图像的一部分的改变处理。 在该组点处的光强度的变化导致三维模型的变化以对应于光强度的变化。
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公开(公告)号：US07623992B2
公开(公告)日：2009-11-24
申请号：US10408813
申请日：2003-03-28
CPC分类号： G06T17/205 , G06T17/20
摘要： Methods and apparatus solving problems of polygonal approximations of isosurfaces extracted from uniformly sampled volumes increasing in size due to the availability of higher resolution imaging techniques. The large number of primitives represented hinders the interactive exploration of the dataset. Examples of methods are provided for adaptive isosurface extraction that are generally easy to implement and allows the user to decide the degree of adaptivity as well as the choice of isosurface extraction algorithm. The extraction of the isosurface is optimized by warping the volume. In a warped volume, areas of importance (e.g. containing significant details) are inflated while unimportant ones are contracted. Once the volume is warped, any extraction algorithm can be applied. The extracted mesh is subsequently unwarped such that the warped areas are rescaled to their initial proportions. The resulting isosurface is represented by a mesh that is more densely sampled in regions decided as important.
摘要翻译： 方法和装置解决由于更高分辨率成像技术的可用性而从均匀采样体积提高的等值面的多边形逼近的问题。 代表的大量原语阻碍了数据集的交互式探索。 提供了通常易于实现的自适应等值面提取的方法的示例，并且允许用户决定自适应度以及等面提取算法的选择。 通过扭曲体积来优化等值面的提取。 在扭曲的数量中，重要的领域（例如包含重要的细节）被膨胀，而不重要的领域是合同的。 一旦音量变形，就可以应用任何提取算法。 提取的网格随后被取代，使得翘曲区域被重新缩放到其初始比例。 所得到的等值面由在被确定为重要的区域中更密集地采样的网格表示。
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公开(公告)号：US07174050B2
公开(公告)日：2007-02-06
申请号：US10310428
申请日：2002-12-05
CPC分类号： G06T3/0012 , G06T15/04
摘要： A method, system, and computer program product for adjusting a unit image area within an input image according to information importance within the unit area. An image receiver configured to receive the input image. An image warper is coupled to an importance map as is configured to generate a warped image such that regions of higher importance in the input image are expanded in the warped image and regions of lower importance in the input image are compressed in the warped image. The importance map is configured to delineate the regions of higher importance and the regions of lower importance in the input image. Texture coordinates may also be warped in a similar manner. Thus, the image is unwarped automatically by modern graphics adapters having texture mapping capabilities.
摘要翻译： 一种用于根据单位区域内的信息重要性调整输入图像内的单位图像区域的方法，系统和计算机程序产品。 被配置为接收输入图像的图像接收器。 图像整形器耦合到重要度映射图，其被配置为生成翘曲图像，使得输入图像中较高重要性的区域在翘曲图像中被扩展，并且输入图像中较低重要性的区域在翘曲图像中被压缩。 重要性图被配置为在输入图像中描绘较高重要性的区域和较低重要性的区域。 纹理坐标也可以以类似的方式扭曲。 因此，具有纹理映射能力的现代图形适配器自动地对图像进行自动化。
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