Computing Isotropic Local Contrast from Oriented Pyramid Decompositions

Working with contrast instead of luminance can facilitate numerous image processing and analysis tasks. Unfortunately, a common definition of contrast suitable for all situations does not exist. In this paper we review existing contrast definitions for natural images and propose a new isotropic contrast measure, which is computed from oriented filters. We investigate some of its properties and apply it to natural images.

• Type: Conference
• Year: 1999
• Where: ICIP
• Authors: Stefan Winkler, Pierre Vandergheynst
• Keywords: Contrast Definitions, ICIP 1999, Image Processing, Isotropic Contrast Measure, Natural Images