Unified visual measurement of blur and noise distortions in digital images
US7715646B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jan 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for unified visual measurement of blur and noise distortions in digital image data, the system including a processor, an input adapter in signal communication with the processor for receiving digital image data, a visual discrimination model (VDM) simulation unit in signal communication with the processor, a just noticeable difference (JND) analysis unit in signal communication with the processor, and a JND selection unit in signal communication with the processor; and the method including receiving digital image data, simulating a single-ended VDM, analyzing individual JND channels, including the responses of the highest spatial frequency channel(s), and selecting a reference JND level corresponding to low noise and blur distortions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.