Projector and projection image correction method thereof

摘要

A transformation coefficient storing unit has correction tables which are generated based on classification of zooming magnification in a manner of arithmetic progression. An optical mechanism unit supplies information on a zooming magnification Z to a switch control unit of the transformation coefficient storing unit. The switch control unit controls a table selection unit to select any from the correction tables based on the zooming magnification Z. The transformation coefficient storing unit selects a coefficient set from the selected correction table based on inclination angles thetaH and thetaV and supplies the selected coefficient set to a trapezoidal correction unit. The trapezoidal correction unit performs trapezoidal correction based on the supplied coefficient set.