Visual Fatigue Alleviating in Stereo Imaging of Anaglyphs by Reducing Retinal Rivalry and Color Distortion Based on Mobile Virtual Reality Technology

Stereoscopic display is the means of showing scenes in Virtual Reality (VR). As a type of stereo images, anaglyphs can be displayed not only on the screen, but are currently the only solution of stereo images that can be displayed on paper. However, its deficiencies, like retinal rivalry and color distortion, could cause visual fatigue. To address this issue, an algorithm is proposed for anaglyph generation. Unlike previous studies only considering one aspect, it considers both retinal rivalry and color distortion at the same time. The algorithm works in the CIE L ∗ a ∗ b ∗ color space and focuses on matching the perceptual color attributes especially the hue, rather than directly minimizes the sum of the distances between the perceived anaglyph color and the stereo image pair. In addition, the paper builds a relatively complete framework to generate anaglyphs so that it is more controllable to adjust the parameters and choose the appropriate process. The subjective tests are conducted to compare the results with several techniques which generate anaglyphs including empirical methods and computing methods. Results show that the proposed algorithm has a good performance.

Pupillographic Recording in Stereoscopically Induced Perceptual Conflict

The present investigation describes a pupillographic method for recording the input/inhibition relationship in stereoscopically induced perceptual conflict between different objects. By means of an infrared technique for photographing the pupils it is shown which eye is inhibited and which eye is not at a specific moment of retinal rivalry. A series of such instantaneous tests of input/inhibition relationship were used to establish which of the two stereoscopical object fields had dominated perception during a 60-sec. interval. The test is based on the known fact that no pupillary reflex is found when an inhibited eye is stimulated by a flash during binocular rivalry. A possible use of the pupillographic method in research on so-called motivated perception is indicated.