| 摘要 |
PROBLEM TO BE SOLVED: To more easily track a subject.SOLUTION: While tracking a subject (H)(S01), a subject tracking display controller (100) detects the travel speed and the travel direction of the subject (H), detects whether the subject (H) has been deviated from a display unit (8)(S03), and when detecting the deviation, controls the display unit (8) to display an arrow (Y) which has a length (L) corresponding to the detected travel speed of the subject (H) and which faces the travel direction of the subject (H)(S04). |
