Format conversion
US7064792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and computer program product for reformatting at least a portion of a digital source image. The digital source image has a number of pixels defining an original format which is to be converted to a destination image in a new format having a number of pixels. The number of pixels of the new format is greater than the number of pixels in the original format. A gradient is estimated at a point within a window which encompasses a plurality of intensity values from the source image. A polynomial is then used to determine a value for the point in the new format within the window. The polynomial is based in part upon the gradient. Values are then determined for additional points in the destination image by selecting a new window and repeating the acts of estimating a gradient and using a polynomial to determine a value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.