Authors:Rudolf Netzel;Nils Rodrigues;Anja Haug andDaniel Weiskopf

Affiliation:Visualization Research Center (VISUS), University of Stuttgart and Germany

Keyword(s):Simultaneous Contrast, Texture Orientation, Human Vision.

RelatedOntology Subjects/Areas/Topics:Computer Vision, Visualization and Computer Graphics ;General Data Visualization ;Perception and Cognition in Visualization

Abstract:We propose a method that compensates the simultaneous orientation contrast in the visualization of superimposed textures. Such superposition plays a role in visualizations that overlay or enrich visual representations of data with additional information. Our compensation method extracts the direction and frequency within the input textures by using a Gabor filter bank. The foreground texture is then rotated to counterbalance the tilt illusion. The rotation angle is determined by a model that adopts results of previous studies that measured the influence of perceived contrast, direction, and frequency on the perceived tilt. The effectiveness of our method is demonstrated for artificial stimuli and a typical example of scientific flow visualization of multiple vector fields.