GUIDE SYSTEM, CONTROL METHOD USED FOR THE SAME, AND COMPUTER PROGRAM

PROBLEM TO BE SOLVED: To provide a guide system capable of guiding prescribed operation clearly.SOLUTION: A guide system for guiding prescribed operation to a user is provided with: an optical sensor OS for imaging an imaging range including a player who performs prescribed operation; and a monitor 4 displaying a music selection screen MS which uses a captured image captured by the optical sensor OS to guide the prescribed operation. The guide system identifies at least a part of the captured image related to the prescribed operation on the basis of a prescribed performance condition, and generates processed image data for expressing a processed image on the basis of the captured image and its specific result so that the processed image where a part of the captured image is emphasized can be used for the music selection screen MS.