Automatic separation of subject pixels using segmentation based on multiple planes of measurement data
US6845178B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jun 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for characterizing pixels in an image of an object surface by providing at least two images of the surface wherein each pixel has a unique location common to all of the images; comparing each pixel value at each location to an identification matrix; and identifying the region in which each pixel is located based on the comparison. The matrix can comprise a plurality of non-pixel values representing one or more regions, each of the regions defining at least one surface attribute. One embodiment provides at least two references images of a template using the same technique used to obtain each image of the surface, and creating the matrix using the reference images. Providing at least two images comprises providing a first and second image, wherein the surface is illuminated using a first and second source of illumination, or providing the first using a source of illumination and providing the second from the first.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.