The principle and a practical apparatus of digital image synthesizer are described in this paper.The system is composed of two independent digital image generators,image rotator circuits,two-dimentional rectangular and circular window circuits,raster generators and brightness modulating circuits.the image generator can produce varierty of images such as stationary or movig circular,annular,rectangular apertures,gratings and on a cathode ray tube screen.It meets the needs of pattern stimuli required for phys...
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