Non-linear quantization and similarity matching methods for retrieving video sequence having a set of image frames
US7702152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Jan 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for constructing a database having digital video data information representing a plurality of video sequence is disclosed. The method includes the steps of: a) partitioning each image frame of each video sequence into L number of sub images; b) generating L number of edge histograms for each image frame; c) normalizing the edge histogram bins to thereby generate M number of normalized edge histogram bins; d) calculating M representative edge histogram bins in order to generate L number of representative edge histograms based on the normalized edge histogram bins; and e) non-linearly quantizing the representative edge histogram bins to generate M number of quantization index values for the each representative edge histogram, to be stored in the database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.