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official journal of the patent office - Controller General of Patents ...

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(12) PATENT APPLICATION PUBLICATION<br />

(19) INDIA (21) Application No.: 00884/KOLNP/2005 A<br />

(22) Date <strong>of</strong> filing <strong>of</strong> Application: 13/05/2005 (43) Publication Date: 09/06/2006<br />

(54) Title <strong>of</strong> <strong>the</strong> invention: ANALYSIS OF GEOMETRIC SURFACES BY CONFORMAL STRUCTURE<br />

(51) International classification : G06F<br />

(31) Priority Document No : 60/424,141<br />

(32) Priority Date : 06/11/2002<br />

(33) Name <strong>of</strong> priority country : US<br />

(86) International Application No and : PCT/US03/035395<br />

Filing Date<br />

: 06/11/2003<br />

(87) International Publication No : WO 04/044689 A2<br />

(61) Patent <strong>of</strong> addition to Application No : NIL<br />

Filed on : N.A.<br />

(62) Divisional to Application No : NIL<br />

Filed on : N.A.<br />

(57) Abstract:<br />

(71) Name <strong>of</strong> Applicant:<br />

GEOMETRIC INFORMATICS INC<br />

Address <strong>of</strong> <strong>the</strong> Applicant:<br />

387 SOMERVILLE AVE SOMERVILLE<br />

MASSACHUSETTS 02143 USA<br />

(72) Name <strong>of</strong> <strong>the</strong> Inventor:<br />

1. YAU SHING-TUNG<br />

2. GU XIANFENG<br />

3. WANG YALIN<br />

Filed U/S 5(2) before The <strong>Patents</strong> (Amendment)<br />

Act, 2005: NO<br />

A method for analyzing, classifying, and recognizing geometric surfaces is disclosed. Geometric surfaces are treated as Riemann<br />

manifolds and <strong>the</strong> conformal structure corresponding to <strong>the</strong> surfaces is calculated. The conformal structure <strong>of</strong> <strong>the</strong> surface contains <strong>the</strong><br />

intrinsic geometric information about <strong>the</strong> surface, but in a much more compact format as compared to o<strong>the</strong>r representations. Conformally<br />

mapping <strong>the</strong> surface to a canonical parameter domain, such as a disk, sphere, or plane retains <strong>the</strong> geometric information <strong>of</strong> <strong>the</strong> surface,<br />

and renders <strong>the</strong> calculation <strong>of</strong> conformal structure much easier. Various applications enabled by such a conformal representation include<br />

surface matching, surface cataloging, surface recognition, animation and morphing between surfaces, and o<strong>the</strong>r ma<strong>the</strong>matical analysis.<br />

(FIG. -1A)<br />

The Patent Office Journal 09/06/2006 11041

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