Image processing system, information processing device, information storage device, and image processing method

An image processing system includes an image acquisition section that consecutively acquires still images, a direction determination section that determines a camera moving direction that is a moving direction of an imaging section during capture, and a panoramic image generation section that performs a synthesis process of the consecutively acquired still images to generate a panoramic image. The direction determination section determines whether the camera moving direction is a first camera moving direction or a second camera moving direction that differs from the first camera moving direction when the imaging section is moved during capture. The panoramic image generation section performs the synthesis process of a still image among the consecutively acquired still images based on the camera moving direction when the consecutively acquired still images were captured to generate the panoramic image.