Comparing two Designs for Removing edge Violation of Stereoscopic 3d Maps

Abstract

Stereoscopic 3D (S3D) maps present a faithful image of the Earth’s surface. A stereo edge violation occurs when an object appears to be in front of the screen and is cut off by the screen edge. Two designs are proposed to remove this artifact. One applies dynamic floating windows which cover the contents existing alone on the left or right edges of images. The other is to transform all the horizontal disparities to positive values; all the perceived 3D contents are behind the screen. This study compares the two designs with respect to user preference and visual fatigue. For the selected terrain scenes, participants preferred the design of pushing back to the design of dynamic floating windows. For visual fatigue, the design of dynamic floating windows obtained higher scores in Simplified Simulator Sickness Questionnaires (SSSQs) and General Eye Symptoms Questionnaires (GESQs), which indicated higher visual fatigue. This preliminary study observed that for removing edge violation of interactive S3D maps, the design of setting 3D contents behind the screen might be better than the design of dynamic floating windows in terms of user preference and visual fatigue.