Psychological effects of dynamic presentation of letters on the screen are examined by subjective rating method by seven categories. Letters whose size is 24 points are displayed on the center of the screen. Forty-five subjects rated sixteen items after viewing dynamical letters. Dynamic presentations are flashes, rolling, scroll, trail, wipe, bullet, center-out, fade-in, dissolving, et al. Subjects indicate that the feelings of dynamic presentations are mainly powerfullness, joyfullness and attractivity, however static presentation is more visible and comprehensible than dynamic presentations.
To examine how rapidly, and to what extent, humans obtain sufficient information for searching during fixation, we experimented with visual search by masking the subject's central vision at various onsets and sizes after he had fixated there. The subjects counted circles embedded in distractors. From the results, we learned that, in an area of 4.2 degrees, sufficient visual information could be acquired in 33 ms. The oculomotor control system was not affected by masking. The distribution of the fixation duration varied according to the onset of masking. suggesting that eye movements were quickened by the masking of central vision, and saccades occurred about 130 ms after at the onset of masking.
Binocular fusion for depth motion was examined using static random dot stererogram(SRDS) and dynamic random dot stereogram(DRDS). Depth motion was not elicited about more than 15Hz for the sinusoidal wave modulation, 7.5Hz for the rectangular wave modulation of SRDS and 7.5Hz for DRDS. The maximum disparity for DRDS was greater than the one for SRDS, when the center of depth motion was set on the position of the screen. But, when the center was changed, the one of DRDS was less than the one of SRDS, or depth motion was not visible at high temporal frequency.
Binocular eye movements of subjects viewing random dot stereogram targets were measured. Random dot stereograms which have small disparities within Panum's area didn't cause vergence movements and ones which have large and discontinuous changes of disparities caused convergence movements in various directions. The dynamic characteristics of vergence movement have an effect on perception time of random dot stereogram.
In order to increase TV program productivity, authors have been studying Desk Top Program Production -DTPP- system. The system will assist various works in the process of program production, and provide useful audio-visual expression tools. The experimental DTPP system have been developed and demonstrated a virtual studio environment.
Recently, to increase the security. various personal identification methods using features of living human body have been studied. This paper study fundamental properties of ear images for personal identification through ear images with 1) morphological skeletons, 2) morphological pattern spectra, 3) extraction of morphological pattern spectra by Karhunen-Loeve expansion, and 4) singular values decomposition of ear images.
The method of motion displacement estimation of moving images which includes rotation and scaling between frames was developed by C.F.Fuh et al. In this method, shape deformations modeled by affine matching were considered for image matching. But, this algorithm required much more computational time when compared to the conventional block matching algorithm which considered only shifting. In this paper, we show a way of reducing the number of calculations, and we succeeded to reduce the computational time to 7 times that of the conventional block matching algorithm. We also applied our method to color moving images, and an example using Munsell color space is shown.