Apparatus for and method of hough-converting coordinate data
US5220615A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1990 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/588
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an apparatus for and a method of Hough-converting coordinate data in a rectangular coordinate system. The apparatus includes circulating means for receiving prescribed data corresponding to the coordinate data therein so as to successively add prescribed numbers to the prescribed data while circulating the prescribed data. In addition, the method includes the steps of determining Hough conversion data corresponding to the following coordinate data (x+g, y) in the x-axis direction of coordinate data (x, y) in accordance with the following equation: EQU .rho.(x+g, y, .theta..sub.n)=.rho.(x, y, .theta..sub.n)+a where a and g are constants, and a=g.multidot.cos.theta..sub.n, when the equation for the Hough conversion of the coordinate data (x, y) at the time the coordinate data are set as (x, y) is given by the following equation: EQU .rho.(x, y, .theta..sub.n)=x.multidot.cos.theta..sub.n +y.multidot.sin.theta..sub.n ; and determining Hough conversion data corresponding to the following coordinate data (x, y+h) in the y-axis direction of the coordinate data (x, y) in accordance with the following equation: EQU .rho.)x, y+h, .theta..sub.n)=.rho.(x, y, .theta..sub.n)+…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.