Objective method and system for estimating perceived image and video sharpness
US7079704B2 · kind B2 · utility
5Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jun 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/0004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for estimating the quality of video data without gaining access to the source data, are configured to perform a Fast Fourier Transform (FFT) from at least some of the pixel values of the image in at least the horizontal direction, and at most, in the horizontal and vertical directions for the luminance and chrominance components. An average FFT is used to calculate kurtosis and skewness, then an image-quality metric is determined by calculating an offset from the kurtosis and skewness outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.