IMAGE GENERATING DEVICE, METHOD THEREOF, GAME DEVICE AND STORAGE MEDIUM

The present Invention provides image generating technology capable of expressing a complex yet natural movement of the characters with less image data regardless of the playback speed. A image generating device of the present invention comprises a parameter generating circuit (201) which generates the playback speed parameter regarding the original image structured from a plurality of frame images, a time base interpolation circuit (202) which specifies frame images existing just before and behind the timing on the time base displayed by the playback speed parameter, and interpolates a new posture specifying information regarding frame images which should be existing in a timing on the time base utilizing posture specifying information to specify each posture of the moving objects, and a weighting interpolation circuit (203) which refers to interpolated posture specifying information regarding each of the two types of moving images displaying movement modes of differing moving objects, generates new posture specifying information by weighting interpolation between the two types of moving images, and obtains a moving image which displays a new movement mode (for example, M0A regarding "walking" and M0B regarding "running").