Patent ID: 9109887
Filing Date: 2015-08-18
Classification: G01C,G01S

Abstract:
1. A semiconductor integrated circuit comprising: a correction object determining section which determines whether or not, 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 which can be 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, when the region which can be regarded to be in a state where the rod-like object has been irradiated with the diffusion light exists on the imaging plane in the image data, 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 the light source center position 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 or the light source according to triangulation based on a horizontal distance between a center of the imaging plane in the image data and the first measurement point, positions of the camera and the light source, and an imaging direction angle of the camera.