An image processing apparatus including: a generating section, operable to analyze compressed image data stored in an external memory and generate an analytic table indicative of a storage manner of the compressed image data; an internal memory, adapted to store the compressed image data therein; a storage section, operable to acquire at least a part of the compressed image data from the external memory and store the compressed image data in the internal memory with reference to the analytic table; a decoding section, operable to read and decode the compressed image data stored in the storage section, and rotate and then output the compressed image data as a rotated image data; and an updater, operable to update the analytic table in accordance with a decoding situation of the decoding section.