Object identification using 3-D curve matching
US9111349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2011 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30236
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The claimed subject matter provides for systems and/or methods for identification of instances of an object of interest in 2D images by creating a database of 3D curve models of each desired instance and comparing an image of an object of interest against such 3D curve models of instances. The present application describes identifying and verifying the make and model of a car from a possibly single image—after the models have been populated with training data of test images of many makes and models of cars. In one embodiment, an identification system may be constructed by generating a 3D curve model by back-projecting edge points onto a visual hull reconstruction from silhouettes of an instance. The system and methods employ chamfer distance and orientation distance provides reasonable verification performance, as well as an appearance model for the taillights of the car to increase the robustness of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.