Image processing apparatus, image processing method, and computer-readable recording medium
US8670622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes a gradient magnitude calculating unit that calculates a gradient magnitude of each pixel on the basis of pixel values of a target image in which a predetermined target object is imaged; a candidate-edge detecting unit that detects contour-candidate edge positions on the basis of the gradient magnitude of each pixel; a reference-range setting unit that sets a reference range, which is to be referred to when a contour edge position is selected from among the contour-candidate edge positions, on the basis of the gradient magnitude of each pixel; and a contour-edge selecting unit that selects, as the contour edge position, one of the contour-candidate edge positions in the reference range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.