A state information acquisition section of an image generation apparatus acquires state information of the head of a user. An image generation section generates a display image corresponding to a visual field. A down-sampling section down-samples image data and transmits the down-sampled image data from a transmission section. A distortion correction section of a head-mounted display performs, after an up-sampling section up samples the data, correction according to aberration of the eyepiece, for each primary color and causes the resulting data to be displayed on a display section.