Minoru Yasuda

Flicker-Free Field-Sequential Stereoscopic TV System and Measurement of Human Depth Perception

This article describes a new system of presenting television programs in 3-D using ferroelectric liquid crystal shutter (LCS) glasses, and some findings of psychovisual experiments relating to human depth perception provided by this system. The advantages of the system include no reduction in vertical resolution, complete freedom from flicker, full color, and reduced visual fatigue

Stereoscopic depth perception of isoluminant color random—dot stereograms

It has been reported that there is no stereoscopic depth perception under isoluminant color random-dot stereograms (RDS), and that color information does not contribute to human depth perception. This paper describes the results of experiments on stereoscopic depth perception of isoluminant color RDS, obtained by using the prototype flickerless field-sequential stereoscopic television system developed by the present authors. The results of the experiments show that stereoscopic depth perception clearly does exist even in isoluminant color RDS. It was also found that the binocular fusion area on color RDS is about two-thirds that on black/white stimuli, and that the temporal-frequency limits of binocular disparity for the isoluminant color RDS is about 3 Hz, while that for black/white stimuli are 4 to 5 Hz. These results suggest that not only does the luminance channel contribute to human depth perception, but also the chromatic channels.

50-inch Autostereoscopic 3-D Television.

メガネが不要な50インチ液晶投写型の多眼式3次元カラーテレビジョン装置を試作した.この装置は被写体を4台のテレビカメラで同時に撮像し, 信号処理によって縦縞のストライプ像に合成したあと, 1台の高性能液晶プロジェクタを用いてレンチキュラスクリーンに背面投写する方式である.試作した4眼式3次元テレビジョン装置は, 従来の2眼式に比べて立体視できる観察範囲が拡大し, 自然で見やすい立体カラー動画像を表示することができた.