A projection-type image display device comprising: a projection unit including a light source configured to emit light having intensity corresponding to a pixel value of an input image and a deflection unit configured to deflect emitted light from the light source using a mirror to perform scanning on a projection object; a retiming unit configured to perform retiming on pixel data of the input image in accordance with a deflection angle in the deflection unit; a shape distortion correction table having a shape distortion correction amount in each shape distortion correction table calculation position, the shape distortion correction table being for correcting shape distortion included in a projection image on the projection object from the projection unit; a brightness distortion correction table having a brightness distortion correction amount in each brightness distortion correction table calculation position, the brightness distortion correction table being for correcting brightness distortion included in the projection image; an image correction unit configured to perform distortion correction on the input image by performing signal processing based on the shape distortion correction table and the brightness distortion correction table; and a correction table calculation unit configured to calculate the shape distortion correction table and the brightness distortion correction table, wherein the correction table calculation unit calculates the shape distortion correction amount in each shape distortion correction table calculation position on the basis of an input image parameter including a size of the input image, a mirror-parameter including a deflection angle of the mirror, effective beam region information, and mirror angle information at a time of retiming, a mirror-model including a position of the mirror and optical arrangement information of the mirror and the light source, and a projection object parameter including position information of the projection object relative to the projection unit. a projection unit including a light source configured to emit light having intensity corresponding to a pixel value of an input image and a deflection unit configured to deflect emitted light from the light source using a mirror to perform scanning on a projection object; a retiming unit configured to perform retiming on pixel data of the input image in accordance with a deflection angle in the deflection unit; a shape distortion correction table having a shape distortion correction amount in each shape distortion correction table calculation position, the shape distortion correction table being for correcting shape distortion included in a projection image on the projection object from the projection unit; a brightness distortion correction table having a brightness distortion correction amount in each brightness distortion correction table calculation position, the brightness distortion correction table being for correcting brightness distortion included in the projection image; an image correction unit configured to perform distortion correction on the input image by performing signal processing based on the shape distortion correction table and the brightness distortion correction table; and a correction table calculation unit configured to calculate the shape distortion correction table and the brightness distortion correction table,