Verfahren und Vorrichtung zur Kontrastverstärkung

Details

Veröffentlichungs-Nr.

EP3822907

Aktenzeichen

EP19209050

Anmeldetag

14. November 2019

Veröffentlichung

11. Juni 2025

Erteilung

11. Juni 2025

Rechtsraum

EP

IPC

G06T5/00

Abstract

A multi-scale image processing algorithm for enhancing contrast in an electronic representation of an image represented by a) decomposing said digital image into a set of detail images at multiple resolution levels and a residual image at a resolution level lower than said multiple resolution levels, b) processing at least one pixel of said detail images, c) computing a processed image by applying a reconstruction algorithm to the residual image and the processed detail images, said reconstruction algorithm being such that if it were applied to the residual image and the detail images without processing, then said digital image or a close approximation thereof would be obtained. The processing comprises the steps of: d) calculating for said pixel, at least one statistical measure for two or more translation difference image pixel values within a neighbourhood of said pixel; and e) modifying the value of said pixel of said detail images as a function of said statistical measure and said value of said pixel of said detail images.

Anmelder

Firma

AGFA NV

Land

🇧🇪 Belgien

Fachgebiete