This paver concerns with general discussions for studies of the human vision and healing by engineers. Basic experimental researches are traditionally psychology and phisiology, but theoretical approach for vision and hearing has to be done in standpoint of the information engineeing. Engineerings related deeply to vision are illumination, image, human factor and information. In these area, engineers have to be made much of human sensory activities.
Gaze point prediction can be applicable to the various engineering fields such as telecommunication, human-computer interaction, and traffic security. A model of saccadic eye movement is proposed aiming to predict gaze point in this paper. The gaze point is computed from the difference of successive egocentric images which are structured in the frontal eye field. The validity of the model was confirmed through the computer simulation tests.
Up to now, we had thought vergent, eye movement (vergence) was the main cause for stereopsis. But we found vergence is observed after stereoscopic perception rather than when searching corresponding points. Hereby, we guess the stereoscopic perceptual process is accomplished at first in the cerebrum, and then the vergence is evoked in order to maintain the stereoscopic perception. In this research. we performed a stereoscopic perceptual analysis by using dynamic color r__-andom-d__-ot s__-tereograms (RDSs).
In the last decade,problems of so called 'shape-from-X' were widely investigated theoretically. In the present paper, we examined the effects of shading on monocular stereopsis (i.e., shape from shading). In Experiment I, subjects showed the overestimation of the surface curvature under the condition in which shade information was available, while they showed the underestimation under the non shade condition. In Experiment II-V, several important factors were examined; effect of shade, perceived Position of the light source and vatage point.
To investigate the dynamics of the visual system in combining multiple depth cues, we measured temporal change in the perceived 3D shape of a random-dot stimulus with conflicting KDE (Kinetic Depth Effect) and binocular stereopsis cues. The results showed that KDE shape perception dominated for the first few seconds, then gradually changed into stereo shape perception. The effects of various pre-adaptation stimuli suggested that the temporal change of perceived shape resulted from the self-adaptation of the KDE mechanism that occurred at the levels of motion and relative motion detection, rather than at the higher shape reconstruction stage.
This paper describes the experimental result of Psychological evaluation of Partial masking on facial expression. Effects of place and size of artificial mask patterns are evaluated using computer and video systems. Obstructive scores of masks is the following order: both eye > Single eye = > mouth > nose. Masks on single eye portion show almost simillar obstructive score (MOS=3).