X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-05-02
1998-12-08
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378901, 382152, A61B 603, G01N 2304
Patent
active
058481150
ABSTRACT:
The invention is a three-dimensional computed tomography method for inspecting and comparing actual geometry to predetermined geometry of an object. The method includes the following steps: A) three-dimensionally scanning the object using computed tomography to produce multiple slices of actual geometrical data of the object; B) processing the multiple slices of actual geometrical data into actual boundary data which defines internal and external boundaries of the object; and C) producing actual point cloud data from the actual boundary data. The method further includes comparing the actual point cloud data to object geometry predetermined data. The comparing may include outputting an image comparing the point cloud data to the predetermined data and the image may represent the geometry of non-conformance between the point cloud data and the predetermined data. The image may be rotated to present the non-conformance from different viewpoints around the feature.
REFERENCES:
patent: 4422177 (1983-12-01), Mastronardi et al.
patent: 4600998 (1986-07-01), Huet
patent: 4729098 (1988-03-01), Cline et al.
patent: 4969110 (1990-11-01), Little et al.
patent: 5027281 (1991-06-01), Rekow et al.
patent: 5119408 (1992-06-01), Little et al.
patent: 5345490 (1994-09-01), Finnigan et al.
patent: 5414647 (1995-05-01), Ebenstein et al.
patent: 5442572 (1995-08-01), Kiridena et al.
patent: 5452407 (1995-09-01), Crook
patent: 5559334 (1996-09-01), Gupta et al.
patent: 5621648 (1997-04-01), Crump
Applied Technologies Inc. "Reverse Engineering using X-Ray Tomography" URL http://www.acceltechinc.com/revengineer.html, Nov. 1996.
Imageware "applications how our software is used" URL http://www.iware.com/htmls/uses.html, Sep. 1996.
Imageware "key capabilities what our software can do" URL http://www.iware.com/htmls/key.sub.-- caps.thml, Sep. 1996.
"Reverse Engineering using X-Ray Tomography", Accelerated Technologies, Inc., 1 page, Internet Document. No Date.
"key capabilities what our software can do", About Imageware, 5 pages, Internet Document. No Date.
"applications how our software is used", Imageware Product Applications, 5 pages, Internet Document. No Date.
"Linear Pushbroom Cameras", R. Hartley and R. Gupta, Presented at the Third European Conference on Computer Vision, Computer Vision-ECCV '94, pp. 555-566, 1994.
"X-Ray Metrology for Quality Assurance", A. Noble, R. Hartley, J. Mundy and J. Farley, Presented at the 1994 International Conference on Robotics and Automation, Proc. IEEE International Conference on Robotics and Automation, pp. 1113-1119, May, 1995.
"Camera Calibration for 2.5-D X-Ray Metrology", R. Gupta, A. Noble, R. Hartley, J. Mundy and A. Schmitz, to be published at the International Conference on Image Processing, to be held Oct., 1995, 4 pages.
Janning John C.
Little Francis H.
Bruce David Vernon
General Electric Company
Herkamp Nathan D.
Hess Andrew C.
Porta David P.
LandOfFree
Computed tomography metrology does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computed tomography metrology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computed tomography metrology will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-186288