Method and a device for converting a picture
US5801780A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Feb 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and a device for converting a first picture composed of M pixels towards a second substantially identical picture composed of L pixels (M.epsilon.N, L.epsilon.N, M.noteq.L) which are destined for pixelwise representation, wherein each K.sup.th first pixel value is weighed with a weight factor h(k,i) determined by means of projection of the second picture on the first picture and wherein before the second pixel value y(i) is determined a first transfer function component (T) is added to each k.sup.th first pixel value and after determining the second pixel value y(i) a second transfer component (T') is added to that pixel value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.