INFORMATION ACQUISITION DEVICE, INFORMATION OUTPUT DEVICE, INFORMATION COMMUNICATION SYSTEM, INFORMATION ACQUISITION METHOD, INFORMATION OUTPUT METHOD, CONTROL PROGRAM AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To securely communicate information hard to be sensed by a viewer in real time from a display device having a displayed moving image or a still image.;SOLUTION: An information acquisition device includes: an image acquisition unit 21 for successively acquiring images of a display screen, having a displayed moving image or a still image, imaged by a camera 13; a representative brightness value identification unit 22 for identifying a representative brightness value from the images acquired by the image acquisition unit 21; a bit stream detection unit 24 for detecting a brightness change coincident with a brightness change, identified by a plurality of representative brightness values identified by the representative brightness value identification unit 22 from the successively acquired images, from conversion information including one or a plurality of sets of communication information associated with the brightness changes in a predetermined period; and a position identification unit 25 for identifying the communication information associated with the brightness change detected by the bit stream detection unit 24 from the conversion information.;COPYRIGHT: (C)2013,JPO&INPIT