Patent
System and method of three-dimensional image capture and modeling
Michael Petrov,Alexander A. Migdal,Alexei Lebedev,Veronika Shelyekhova,Leonid Polonskiy,Vadim Abadjev +5 more
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TLDR
In this paper, a 3D model of an object based on a series of silhouette and texture map images is constructed using a rotating turntable and a camera which is stationary.Abstract:
System and method for constructing a 3D model of an object based on a series of silhouette and texture map images. In the exemplary embodiment an object is placed on a rotating turntable and a camera, which is stationary, captures images of the object as it rotates on the turntable. In one pass, the system captures a number of photographic images that will be processed into image silhouettes. In a second pass, the system gathers texture data. After a calibration procedure (used to determine the camera's focal length and the turntable's axis of rotation), a silhouette processing module determines a set of two-dimensional polygon shapes (silhouette contour polygons) that describe the contours of the object. The system uses the silhouette contour polygons to create a 3D polygonal mesh model of the object. The system determines the shape of the 3D model analytically by finding the areas of intersection between the edges of the model faces and the edges of the silhouette contour polygons. The system creates an initial, (rough) model of the 3D object from one of the silhouette contour polygons, then executes an overlaying procedure to process each of the remaining silhouette contour polygons. In the overlaying process, the system processes the silhouette contour polygons collected from each silhouette image, projecting each face of the (rough) 3D model onto the image plane of the silhouette contour polygons. The overlaying of each face of the (rough) 3D model onto the 2D plane of the silhouette contour polygons enables the present invention to determine those areas that are extraneous and should be removed from the (rough) 3D model. As the system processes the silhouette contour polygons in each image it removes the extraneous spaces from the initial object model and creates new faces to patch “holes.” The polygonal mesh model, once completed, can be transformed into a triangulated mesh model. In a subsequent step, the system uses a deterministic procedure to map texture from the texture images onto the triangles of the 3D mesh model, locating that area in the various texture map images that is “best” for each mesh triangle.read more
Citations
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Journal ArticleDOI
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Method and apparatus for image assisted modeling of three-dimensional scenes
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TL;DR: In this paper, a computer assisted technique for constructing a 3D model on top of one or more images (e.g., photographs) such that the model's parameters automatically match those of the real world object depicted in the photograph(s).
References
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Proceedings ArticleDOI
Zippered polygon meshes from range images
Greg Turk,Marc Levoy +1 more
TL;DR: A method for combining a collection of range images into a single polygonal mesh that completely describes an object to the extent that it is visible from the outside is presented.
Proceedings ArticleDOI
Multiresolution analysis of arbitrary meshes
TL;DR: A method for overcoming the subdivision connectivity restriction, meaning that completely arbitrary meshes can now be converted to multiresolution form, is presented, based on the approximation of an arbitrary initial mesh M by a mesh MJ that has subdivision connectivity and is guaranteed to be within a specified tolerance.
Patent
Method and apparatus for the fabrication of custom-shaped implants
TL;DR: The surface characteristics of an organ that needs restoration, for example, a tooth which has been prepared for an inlay insertion, are read by means of a noncontact scan-head as mentioned in this paper.
Patent
Method and apparatus for scanning and recording of coordinates describing three dimensional objects of complex and unique geometry
Elizabeth D. Rekow,Donald R. Riley,Arthur G. Erdman,Barney E. Klamecki,Yang Zhu,Jeong-Ho Ahn +5 more
TL;DR: In this article, a method and apparatus for the scanning and recording of coordinates describing 3D objects of complex and unique geometry is described, where a computer acquires data describing an object and its surroundings, and constructs a computer-based 3D model of the object from that data.
Patent
Patient positioning and monitoring system
Lee H. Gerig,Sabry F. El-Hakim +1 more
TL;DR: In this paper, a remote sensing system for real-time monitoring of patient position which can report variations in patient setup from day to day as well as motion during individual treatments is presented.