Patent ID: 8303120
Filing Date: 2012-11-06
Classification: H04N

Abstract:
1. An image display apparatus, comprising: an image projector receiving an image signal and projecting image light; an image display including a projection plane of an arbitrary shape, onto which the image light from the image projector is projected; a connector including a plurality of arms which connect the image projector and the image display and a link mechanism which allows a relative position and posture between the image projector and the image display to one of manually and automatically change; a measurer that measures the relative position and posture between the image projector and the image display; and an image signal processor which calculates correction parameters for correction of distortion of the image light projected from the image projector onto the image display, wherein the correction parameters are calculated based on the relative position and posture measured by the measurer, the correction parameters are calculated further based on a previously set viewing position of a viewer, the correction parameters are calculated further based on the shape of the projection plane of the image display, the correction parameters are calculated further based on an angle of field of the image light projected from the image projector, and the correction parameters are calculated further based on a shift amount which is a distance between a point where a virtual projection plane intersects a previously set optical axis of the image projector and a center point of projected image on the virtual projection plane, and the image signal processor performs a distortion correction processing for the image signal inputted into the image projector based on the calculated correction parameters.