Fundamental knowledge is surveyed concerning representative methods for 3D display, and psychological and physiological properties in stereoscopic vision. Then some recent activities in our laboratories are described. Those are flicker-free field-sequential 3D television system for experiment, experimental results on binocular disparities and fusion range, the temporal characteristics, binocular disparity modulation transfer functions, etc.. Concerning activities on 3D system and display in foreign countries, researches in two organizations in Germany. HHI and IRT, are introduced. They are conducting the researches with methods sharply contrasted. Some problems in 3D pictures are also described.
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