Method for lens distortion correction of photographic images for texture mapping
US5878174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1996 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Nov 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for correcting lens distortion in a photographic image used in texture mapping a CAD image uses a one-dimensional distortion correction curve. The photographic image is represented by an original texture image plane having a plurality of original points produced by a photographic device having a lens. The method has the steps of marking a plurality of data points in a predefined two-dimensional physical wall space and determining a wall space radial distance for each of the plurality of data points, taking a test photograph of the wall space with the photographic device, converting the test photograph to a digital two-dimensional image space, determine an image space radial distance for each of the plurality of data points in the image space, curve fitting the wall space radial distance and the corresponding image space radial distance pairs for each of the plurality of data points, and mapping each of the plurality of original points to a corresponding corrected point with the distortion correction curve so as to produce a corrected texture image plane having a plurality of corrected points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.