A sea surface temperature can be obtained by using the artificial satellite data. However, as the data are measured through atmosphere, they contained some errors. In Miyazaki University NOAA/APT satellite data can receive directly and they are corrected with the data of humidity in the atmosphere. Daytime and nighttime data are analyzed by multiple regression method individually, and compared the observed ones by the observation ships. Obtained results are within a range of errors of ±1℃. To verify the reliability of obtained regression equations, they are applied to different days. It is shown clearly that the sea surface temperature can be calculated within the errors of ±14℃ for any clear days through a year.

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A local heavy rainfall was observed around the Kiyotake, the suburb of Miyazaki city on September 28, 1990. At that time a small typhoon was approaching to Kyusyu. The heavy rainfall was analyzed by using the imegery data of the meteorological satellite and radar images. Also the local meteorological conditions are investigated by the data obtained at many meteorological stations around this area. As the result. it can be estimated that the Interaction of the typhoon and the rain front, which stayed on this area, produced the cause of the rainfall and the local topography gave a trigger of the. heavy rainfall around the spot.

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The transformation from bit image to grayscale image using anti-aliasing, and the relation between the information and the visibility of the transformed image are studied. The resulting image, which has more information than that generated by bit image sampling, actually increases the percieved resolution on a 13 inch display.

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We propose a method to effciently retrieve the original 3-D (three-dimensional) objects by computers as a virtual image from a hologram created by real system. The present method is based on the correlation between the hologram of point source and the hologram of real objects. Then we have succeeded to retrieve objects with the resolution of a wavelength in any direction. This resolution is beyond the capability of conventional holography. HORN-1(HOlographic ReconstructioN) specially prepared machine for this purpose enables us to do this work within quite short time. The machine has achieved a speed of 500 with one circuit.

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A pixel of liquid crystal bistable optical device (LCBOD) is constructed by using a TNLC cell and a CdS Photoconductive cell. The simple pixel structure makes it possible to attain a light weight and compact LCBOD system, since no external optical components are necessary for the The pixels are arranged for 10×10 matrix Structure and a LCBOD panel for optical signal feedback. two dimensional image processing is prepared. Since arbitrary images can also be input by a matrix driving method as an optical input method results of processing can be fed back electrically and further processing can be continued. Then, a complex processing can be attained by using such an iterative operation. In this case, however, some extra devices for the readout of operated results are necessary such as a TV camera or an optical detector matrix. In this work, a new readout method, which does not need any other external devices, is attained by utilizing the matrix electrodes. Some kinds of logic operations between two input images are demonstrated by using a simple system with only one panel and its driver.

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Multi-component monomer materials for recording high-resolution and high-diffraction efficiency phase holograms are described. These materials are composed of two or more monomers having different reactivities for polymerization and refractive indices. These photopolymer recording systems are self-develop-ing and either white light or room light is sufficient for fixing. For 14μm thick holograms, a refractive index change of up to 0.016 was produced, with a diffraction efficiency of 94% obtained by a He-Cd laser (441.6nm). In methylene blue sensitized materials, a dffraction efficiency was 72% using a He-Ne laser (632.8nm).

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We propose and demonstrate the use of a photostimulable phosphor material, an imaging plate ; BaFBr:Eu^<2+>, as a recording media for nano-second pulsed lasers in the, spectral range from ultraviolet to vacuum ultraviolet. The sensitivity characteristics were measured not only for pulsed radiation from KrF, ArF, and Ar_2 excimer lasers but also for quasi continuous wave synchrotron radiation. Then we found that the imaging plate have sensitivity for nano-second pulsed lasers. We designed and constructed a laser beam profiler to record, read, erase images in vacuum. The intensity distribution in the output beams from the Ar_2 excimer laser was measured with it.

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