Auto-focusing algorithm using discrete wavelet transform
US6151415A · kind A · utility
44Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
What is disclosed is a method that includes generating an overall sharpness parameter for a given focus position by performing a Discrete Wavelet Transform upon an image captured by an imaging device and automatically focusing said imaging device to an optimal focus position by comparing a plurality of different sharpness parameters. The optimal focusing position is automatically determined by finding the highest sharpness parameter for a given scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.