Moving object scanning apparatus and method
US7675655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | May 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/4038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for scanning a moving object includes a visible waveband sensor 12 oriented to collect a series of images of the object as it passes through a field of view 16. An image processor 14 uses the series of images to form a composite image. The image processor 14 stores image pixel data for a current image and a predecessor image in the series. It uses information in the current image and its predecessor to analyse images and derive likelihood measures indicating probabilities that current image pixels correspond to parts of the object. The image processor 14 estimates motion between the current image and its predecessor from likelihood weighted pixels. It generates the composite image from frames positioned according to respective estimates of object image motion. Image motion may alternatively be detected by a speed sensor such as a Doppler radar 200 sensing object motion directly and providing image timing signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.