| 摘要 |
PROBLEM TO BE SOLVED: To surely track a vehicle over a wide range from near a TV camera to far away regardless of a non-congested time or a congested time and also to improve the measurement precision by catching characteristic parts and tracking them with a pattern matching. SOLUTION: A TV image input 101 and image analyses 102 are cyclically repeated, during the time, condition branches 112 to 120 are intervened and when a prescribed condition is met, they are branched into a template initial registration 103, etc. In an image analysis, an image analysis area which crosses a road in an image is provided, the luminance distribution within the area is analyzed, and characteristic parts of a vehicle front part or a rear part or a part or whole of characteristic parts, i.e., a front grill, a front glass, headlights, tail lamps, etc., are acquired as a template initial registration area. In template tracking 104, the template of a corresponding column performs pattern matching processing, the time when a vehicle detection coordinate and a processing image are inputted is recorded, and an assigned traffic lane is decided from the coordinate on the latest image. |
