Image projection apparatus and image projection method for projecting cut-out image in a predetermined cycle

摘要

An image projection apparatus includes a light modulation device that modulates light according to image data; a projecting unit that projects modulated light; an angle-of-view deriving unit that derives an angle of view at which modulated light is projected; a projection-direction changing unit that changes a projection direction from a first direction to a second direction; a projection-angle deriving unit that derives a projection angle between the first direction and a changed projection direction; a storage unit that stores image data; and an image cutting unit that generates cut-out image data by cutting a part of the image data based on the angle of view and the projection angle as image data projected from the first direction through the second direction, and the minimum variable angle is determined based on the angle of view and a size of an effective region of the modulated light.

主权项

1. An image projection apparatus comprising:
a light modulation device that modulates light according to image data in a pixel unit; a projecting unit that projects light modulated by the light modulation device; an angle-of-view deriving unit that derives an angle of view at which light modulated by the light modulation device is projected by the projecting unit; a projection-direction changing unit that changes a projection direction of the projecting unit from a first projection direction to a second projection direction, based on a minimum variable angle; a projection-angle deriving unit that derives a projection angle between the first projection direction and a projection direction changed by the projection-direction changing unit; a storage unit that stores input image data input; and an image cutting unit that generates cut-out image data that is obtained by cutting a region of a part of an image of the input image data that is stored in the storage unit based on the angle of view and the projection angle in a predetermined cycle as image data projected by the projecting unit when the projecting unit projects from the first projection direction through the second projection direction, wherein the minimum variable angle is determined based on the angle of view and a size in a pixel unit of an effective region in which the light modulation device modulates light.