KEYWORDS: 3D image processing, 3D displays, Image fusion, Principal component analysis, Cameras, Factor analysis, Error analysis, Analytical research, 3D imaging standards, 3D vision
In order to identify the conditions which make stereoscopic images easier to view, we analyzed the psychological effects using a stereoscopic HDTV system, and examined the relationship between this analysis and the parallax distribution patterns. First, we evaluated the impression of 3-D pictures of the standard 3-D test chart and past 3-D video programs using some evaluation terms. Two factors were thus extracted, the first related to the sense of presence and the second related to ease of viewing. Secondly, we applied principal component analysis to the parallax distribution of the stereoscopic images used in the subjective evaluation tests, in order to extract the features of the parallax distribution, then we examined the relationship between the factors and the features of the parallax distribution. The results indicated that the features of the parallax distribution are strongly related to ease of viewing, and for ease of viewing 3-D images, the upper part of the screen should be located further away from the viewer with less parallax irregularity, and the entire image should be positioned at the back.
KEYWORDS: Iodine, Chemical oxygen iodine lasers, Oxygen, Molecules, Chemical species, Chemical reactions, Chemical lasers, Molecular lasers, High power lasers, Laser resonators
We suggest pre-dissociation iodine molecule utilizing RF-discharge (Radio Frequency discharge) dissociation of I2 for chemical oxygen iodine laser (COIL). The object of the study is to make clear that RF discharge is effective on our experiment. We focus chemical reaction of COIL itself, and especially consider a scheme of dissociation of I2 So following chemical reaction is a process of dissociate iodine molecule into iodine atom by O2(1Æ). I2+ nO2(1 Æ) ? 2I + n O2(3? ) n=4~6 This chemical reaction indicates that to dissociate iodine molecule into iodine atom needs a lot of O2(1Æ ). In our experiments we could prove that RF was effective in this term. Approximately 60% of iodine molecular, which is dissociated by RF discharge, is carried to laser cavity. It is estimated that the other 40% of iodine atom is recombination in our COIL system. As the results, we can obtain higher power, higher gain by using RF discharge dissociation than normal COIL.
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