Patent · US Expired

Image contrast enhancing method

US5717791A · kind A · utility

78Cited by

4References

17Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Francis Labaere · Roeselare, BE
Pieter Vuylsteke · Mortsel, BE

Key dates

Filing date	Nov 9, 1995
Grant date	Feb 10, 1998
Priority date	—
Expiry date	Nov 9, 2015

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/20064
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A contrast enhancing processing method is disclosed that is based on a transformation of an original image into a multiresolution edge representation based on a wavelet transform. The multiresolution edge representation is modified and subsequently subjected to a reconstruction procedure. Different embodiments are disclosed that are based on different forms of the multiresolution edge representation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.