Method of extracting contours using a combined active contour and starter/guide approach
US5862245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semi-automatic method of extracting a contour in a digital image using a combined active contour and starter/guide approach is based on an iterative process of deforming an active contour to obtain a current trace and extending the current trace by a straight line segment. An initial contour is entered into the image to seed the iterative process. Local analysis of the digital image at a point of the initial contour determines a first reference datum. At each iteration this analysis is carried out locally at a plurality of points around the end point of the current trace to determine, by correlation with the first datum, the orientation of the straight line segment extending the current trace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.