INFORMATION DEVICE FOR DRAWING AR OBJECTS BASED ON PREDICTIVE CAMERA ATTITUDE IN REAL TIME, PROGRAM AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide an information device capable of drawing an object in real time in such a manner that temporal positional displacement of the object relative to a real space can be made as small as possible, a program and a method.SOLUTION: The information device includes: a frame buffer for buffering a frame of a camera; drawing control means for drawing the object on a display; present camera attitude calculation means for calculating a present camera attitude at a time t1 in which a frame acquisition instruction is generated, for a frame that is captured from the frame buffer at a time t0 before a buffering time &Dgr;t1; predictive camera attitude calculation means which acquires an attitude prediction delay time &Dgr;t2 that is an elapsed time from the time t1, and calculates a predictive camera attitude that is predicted at least after "buffering time &Dgr;t1+attitude prediction delay time &Dgr;t2" from the present camera attitude for the frame at the time t0; and predictive object generation means for outputting a predictive object that is obtained by performing projective transformation on the object in accordance with the predictive camera attitude, to the drawing control means.SELECTED DRAWING: Figure 4