Patent ID: 8403500

Claim:
A projector comprising: a projection unit that projects an image toward a projection surface; an imaging unit that captures the image projected onto the projection surface by the projection unit; a correction control unit that allows the imaging unit to capture a distortion detection image projected onto the projection surface by the projection unit and acquires first correction information based on the acquired first captured image; and a distortion correction unit that performs distortion correction by transforming the image projected by the projection unit based on the first correction information acquired by the correction control unit, wherein the correction control unit, in a case where second distortion correction needs to be performed after the distortion correction unit performs first distortion correction based on the first correction information, allows the projection unit to project the distortion detection image without transforming the distortion detection image by the distortion correction unit, allows the imaging unit to capture the projected distortion detection image so as to be acquired as a second captured image, acquires second correction information based on the second captured image, and allows the distortion correction unit to perform the second distortion correction based on the second correction information.