| 摘要 |
A system two dimensional image processing comprises an image display 300, a central processing unit 102, memories 103-108, a program processing section 100 which executes a game program which moves a moving object in a virtual three-dimensional space in which three-dimensional objects are arranged, and an operation section 200 which accepts speed data on the moving objects in the virtual three-dimensional space and sends the data to the program processing unit. The operation section 200 sends moving-object speed data to a perspective conversion unit 110. The perspective conversion unit 110 makes the distance between a viewpoint and a projection screen variable according to the relative speed of the moving object. As the effective visual area on the projection screen becomes smaller, the range of the virtual three-dimensional space displayed in the effective visual area becomes larger. This makes the view field angle to the projection screen variable according to the movement speed of the moving object.
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