Method and system for automatic detection and display of aspect ratio
US7339627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/142
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Certain embodiments of the invention may be found in a method and system for automatic aspect ratio detection and may comprise scanning lines in at least a selected portion of an image and locating a first reference pixel in one of the scanned lines. A corresponding sliding sum and a sliding number may be generated starting from the first reference pixel and a white edge determined based on the generated sliding sum and/or the generated sliding number. The first reference pixel may be a non-black pixel and a value which corresponds to and defines non-black may be variably defined. The sliding sum and the sliding number may utilize m bins, where m is greater than one (1). A luma sum threshold may be compared with the generated sliding sum to locate the white edge for aspect ratio detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.