Boots – shoes – and leggings
Patent
1996-06-03
1997-06-24
Voeltz, Emanuel T.
Boots, shoes, and leggings
382141, 382285, 395119, 395120, 395123, 395124, 395129, 364559, G06K 900
Patent
active
056422938
ABSTRACT:
A photogrammetry target (cube or other shape of known dimension with reference points in known relation to each other) is placed on or in close proximity to a surface for which surface profile and/or surface strain are to be measured. Identifiable reference points are applied to the surface of interest, and multiple images of the surface with photogrammetry target are taken. At least some of the reference points on the photogrammetry target and the surface of interest must be visible in each image. The surface profile and/or surface strain are determined from the images based on the reference points therein. The determination is made by determining two-dimensional coordinates for each visible reference point in each image, correlating the two-dimensional coordinates for the images, determining, for each image, a distance between a vantage point for obtaining the image and the photogrammetry target, and determining, for each image, three-dimensional coordinates for each visible reference point on the surface of interest based on the correlated two-dimensional coordinates and the determined distance. The images are obtained by a digital camera, and the surface profile and/or surface strain determination is made by a computer.
REFERENCES:
patent: 4969106 (1990-11-01), Vogel et al.
Publication printed in The Journal of The Minerals, Metals & Materials Society, titled "The Automated Measurement of Strains from Three-Dimensional Deformed Surfaces", Authors-J.H. Vogel and D. Lee; vol. 42, No. 2, Feb. 1990, p. 8-13.
Publication in SAE (The Engineering Society For Advancing Mobility Land Sea Air and Space) Technical Paper Series 920436, Feb. 1992, pp. 73-85; titled "Comparison of Different Surface Strain Measurement Methods Used for Deformed Sheet Metal Parts"; Authors: M.I. Kapij, CamSys, Inc; Moleski, General Motors Research Labs.; T. Ohwuc, Nippon Steel Corp.; J.H. Vogel, University of Minnesota; D. Lee, Rensselaer Polytechnic Institute; Reprinted from: Autobody Stamping Applications and Analysis (SP-897).
Publication in Body Assembly & Manufacturing, IBEC '93, pp. 106-111, titled "Comparison of Different Strain Measurement Techniques Used For Stamped Sheet Metal Parts" by David W. Manthey, Rebecca M. Bassett, CamSys, Inc. and Daeyong Lee, Rensselaer Polytechnic Institute.
Publication in Nov. 1994 Issue of Production by Dr. Ing Karl Hermann Breyer and Dr. Ing Rainer Ohnheiser, Carl Zeiss, Oberkochen, Germany, titled "Length and Form Measurement on Coordinate Measuring Machines", pp. 38-43.
Publication in American Machinist, Aug. 1989, pp. 42-50, by Frederick Mason, titled "Ways to inspect jet-engine blades".
Publication in Computer Graphics and Image Processing, vol, 17, pp. 130-144, published in 1981, titled "Pattern Thinning By Contour Tracing", Author: Carlo Arcelli.
Publication titled "A Computer Program For Direct Linear Transformation Solution Of The Colinerity Condition, And Some Applications Of It;" Authors: Genaro T. Marzan and Dr. H.M. Karara.
Publication titled "Medial Lines and Figure Analysis", Authors: Carlo Arcelli and Gabriella Sanniti di Baja, Instituto di Cibernetica, C.N.R, 80072 Arco Felice, Naples, Italy.
Lee Daeyong
Manthey David W.
CamSys, Inc.
Reinke, Esq. Wayne F.
Vo Hien
Voeltz Emanuel T.
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