| 摘要 |
An image signal processing unit (8) partitions a frame image into a plurality of partitioned blocks and calculates for each partitioned block luminance information, color information, contrast information, and a motion vector quantity. A grouping unit (22) groups the partitioned blocks into an image area of the same object based on the luminance information and the color information of each partitioned block. A moving amount calculating unit (23) calculates a moving amount of an object contained in a grouped image area based on the motion vector quantity of each partitioned block, a detection value of a motion detection sensor, and a focal length calculated by a focal length calculating unit (21). A tracking object selecting unit (25) selects an object in the image area of the highest contrast value as a tracking target object out of objects each having a moving amount exceeding a threshold value. |
