| 摘要 |
Provided are: a correction object determining section which determines whether, on an imaging plane in image data obtained by imaging an object irradiated with diffusion light from a light source by a camera, a region regarded to be in a state where a rod-like object has been irradiated with the diffusion light exists; a measurement point calculating section which estimates a light source center position of the diffusion light based on information of a luminance distribution of the diffusion light in the image data to set it as a first measurement point; and a distance calculating section which calculates a distance between the object at the first measurement point and the camera according to triangulation based on a horizontal distance between the center of the imaging plane and the first measurement point, the positions of the camera and light source, and an imaging direction angle of the camera. |
