Method for estimating the location of an image target region from tracked multiple image landmark regions
US5581629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Jan 30, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/272
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing method for inserting a given pattern at a target region having a particular location with respect to a scene being viewed by an image sensor over a period of time, wherein the method employs a world map having stored therein the relative position of the location and the pose of multiple pre-trained reference image patterns of landmark regions in the scene with respect to that of the target region. The method comprises dynamic computation steps for inferring the size and position of the particular location within each of ongoing successive image frames of the scene from the shape, size and position of at least one of said multiple landmark regions represented within each of successive image frames of the scene, despite inaccuracies in the parametric model estimation relating the current image with the pre-trained reference image and changes over time in the shape, size and position of the image patterns of the multiple landmark regions from those of the pre-trained reference image patterns of the landmark regions stored in the world map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.