自動車用ヘッドアップディスプレイ(HUD)にみられる「3次元的に空間に位置する視距離が異なる視対象」の認識(<小特集>ヒューマンインフォメーション)

概要

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Generally, decreasing the depression angle of HUD images, drivers can perceive more information displayed on the HUDs. However, when distance to the displayed image is not so long and the depression angle is very small, drivers sometimes perceive "double-images" displayed on the HUDs. We have first proposed and verified the hypothesis that the "double-images" stems from driver's convergence response delay. Observing driver's eye movement using EOG, we have found that the convergence response closely depends on the depression angle of HUD image. We have also found a finite depression angle, causing version of the driver's eyes to watch the HUD image, shortens the rise-up time of the convergence response and then improves the "double-images". Next we examined how the version works to improve the "double-images", focusing on a saccadic suppression of visual information. Finally, we have developed a cognitive model that can explain the process of representing objects as HUD images at varying distances within a 3D space.
2003-12-01