| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection image area detecting device which can detect from a photographed image, a projection image area in which a projection image is projected, in accordance with changes in relative positions of a projection device, a projection object, and a photographing device. <P>SOLUTION: A marker of which color combination of a pattern changes as time passes is generated as a marker image 30, and the generated marker image 30 is added to four corners of a projection image, and the projection image having the marker image added thereto is supplied to a projector to be projected, and areas wherein color combination of the pattern continuously changes as time passes, in the photographed image are detected as marker image areas to detect a projection image area from the photographed image. <P>COPYRIGHT: (C)2011,JPO&INPIT |
