| 摘要 |
PROBLEM TO BE SOLVED: To surely clean stains of a lens due to white turbidity.SOLUTION: The surface of a lens 12 is cleaned by the steps of: calculating a degree U of white turbidity of the surface of the lens 12 on the basis of a luminance gradient g in an image I (x and y) by a white turbidity degree calculating part 40; and setting an injection form of a cleaning liquid 114 or compressed air 120 from a lens cleaning part 70 on the basis of the degree U of white turbidity thus calculated, by a lens cleaning control part 60. |
