Image projection apparatus

An image projection apparatus comprising:

• an image generation element configured to form an image to be projected using light emitted from a light source;
• an optical element disposed at a position after the image generation element in a light path of the light emitted from the light source;
• a shift unit configured to shift the position of the optical element when a pixel shift mode is set by a main controller;
• and circuitry configured to generate, when the pixel shift mode is set by the main controller, images used for the pixel shift mode based on image data input to the image projection apparatus, perform keystone correction processing to the generated images, and cause the processed images to be projected as the image by reciprocally shifting the position of the optical element by the shift unit, or perform, when the pixel shift mode is not set by the main controller, the keystone correction processing to image data input to the image projection apparatus to generate an image applied with the keystone correction processing, and project the generated image without shifting the position of the optical element by the shift unit, wherein the circuitry includes an image generation processing unit and a first keystone correction processing unit, and a second keystone correction processing unit, wherein the circuitry is further configured to, when the pixel shift mode is set by the main controller, generate the images for the pixel shift mode by using the image generation processing unit, and then perform the keystone correction processing to the generated images by using the first keystone correction processing unit, and then control a projection unit to project the images by shifting the optical element by the shift unit, and when the pixel shift mode is not set by the main controller and the optical element is not shifted by the shift unit, perform the keystone correction processing to the image data input to the image projection apparatus by using the second keystone correction processing unit, and then control the projection unit to project the image applied with the keystone correction processing.