Histogram-based compound object separation
US8391600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2009 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Dec 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Certain imaging systems, such as automatic explosives detection systems, employ techniques that utilize image processing, feature extraction and decision making steps to detect threats in images. Such techniques use segmentation as a first algorithmic step, which extracts data representing objects from image data. Some of the extracted objects are actually composed of multiple distinct physical objects. For these compound objects discrimination becomes difficult because computed object properties are less specific than properties computed for a single physical object. A technique is described which includes splitting such compound objects by separating the data of each component from the rest of the data and using properties of density histograms based on voxel distributions in both density and spatial domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.