Multi-level image stack of filtered images
US7477794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-level image data structure (called a multi-level image stack) containing a single image at each level and a method for generating the same. Images at each level contain the same number of pixels. The multi-level image stack defines a set of levels emanating from an original image having a number of pixels. Each successive level of the multi-level image stack contains a single image. Each single image contains the same number of pixels as the original image. Successive levels encode progressively filtered information of the original image, but without subsampling. This retains the fine-scale resolution of the original image. A variety of filter techniques can be used, including a Gaussian filter and a box filter. The multi-level image stack is particularly well-suited for use in texture synthesis applications, where its fine-scale resolution at all levels has the advantage of reducing artifacts and spatial quantization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.