| 摘要 |
PROBLEM TO BE SOLVED: To perform efficient control within limited calculation time. SOLUTION: An image tracking device comprises: an image pickup means 16 that takes an image formed by an imaging optical system 8 and outputs image information; a focus detecting means 19 that detects a focusing state of the imaging optical system 8; a recognizing means 19 that stores reference information related to a reference image and recognizes a position of an image corresponding to the reference information, within an image corresponding to the image information; and a control means 19 that performs first focus detection in which the focusing state is detected by the focus detecting means 19, before the position is recognized by the recognizing means 19, and second focus detection in which the focusing state is detected for the position that has been recognized by the recognizing means. COPYRIGHT: (C)2009,JPO&INPIT |
