CONTROL DEVICE AND PROJECTION VIDEO DISPLAY DEVICE

摘要

A projection video display device is provided with a projection unit configured to project a video onto a screen via a lens; and an image pickup unit configured to image the screen. A brightness component selection unit receives an image imaged by the image pickup unit when reference light is projected onto the screen and select, of brightness components of pixels forming the image, a brightness component having the maximum value. An exposure correction unit originates a signal for adjusting exposure time in an image pickup device in the image pickup unit with reference to the selected brightness component. A color correction unit receives an image captured by the image pickup unit after the adjustment and corrects the video so that the brightness components are in equal proportion.