Determining article location and orientation using three-dimensional X and Y template edge matrices
US6094501A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/7515
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method to identify the location and orientation of an article is provided, the method comprising the steps of: obtaining an image of the article with the article having a known orientation and location relative to a camera; creating a X and Y template edge matrix from the image of the article; creating a plurality of sets of modified template edge matrices, each of the sets of modified template edge matrices being a X and Y template edge matrix with the article in a different orientation; capturing an digital visual image containing the article, the digital image being a matrix of pixels; creating X and Y article edge matrices from the matrix of pixels; quantifying difference between each of the sets of modified template edge matrices and the X and Y article edge matrices with the modified template edge matrices placed at a plurality of locations within the bounds of the article edge matrices; and identifying the location and orientation of the article as the orientation of the article represented by the set of modified template edge matrices at the location within the bounds of the X and Y article edge matrices with the minimal quantified differences between the modified templat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.