Image data processing method and device therefor
US4734770A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image data processing method for restoring an image worsened by non-linear characteristics of a transforming system, noises and others is disclosed, by which a quantity called energy function, in which the noises and others described above are taken into consideration, is defined, and treatments for modifying stochastically the value of the gray level of each of the pixels are repeated so that a probability determined by this energy function is made greatest and the function E({x.sub.i,j }) represented by the following equation is adopted for the energy function stated above; ##EQU1## where x.sub.k,l is the value of the gray level of the group of pixels directly adjacent to the sides of the object pixel x.sub.i,j ; y.sub.i,j is the value of the gray level at that time of the object pixel; f(x.sub.i,j) is the value corresponding to the true gray level of the object pixel obtained through the transformation system for transforming image signals into a first image data; and .alpha. is a coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.