A dynamic picture storage section (200) stores a picked up dynamic picture picked up by an image pickup apparatus. A metadata storage section (210) stores transformation information for transforming, with reference to at least one of picked up images, a different picked up image. An arrangement information calculation section (230) calculates a display range for a synthesized image based on the transformation information and calculates an arrangement position and a size for a top image in an image memory (250) such that the display range is smaller than the size of the storage region of the image memory (250). An image transformation section (240) arranges the top image at the arrangement position and with the size calculated by the arrangement information calculation section (230) in the image memory (250) and synthesizes the transformed picked up images with history images to form a synthesized image. Consequently, where a dynamic picture picked up by the image pickup apparatus is to be accessed, the contents of the dynamic picture can be grasped readily.