Vehicle zone monitoring apparatus
View Patent ↗A vehicle zone monitoring apparatus that detects physical bodies present in the vicinity of the vehicle from infrared images photographed by infrared cameras provided on the vehicle includes an object extracting device that extracts object images that emit infrared radiation from the infrared image and an artificial structure identifying device that identifies whether or not an object is an artificial structure by comparing an image of a search zone in proximity to the object extracted by the object extraction device, to a reference image of a pre-registered artificial structure which serves as an element that defines an artificial structure, and that identifies the object as an artificial structure if: within the search zone in proximity to the object, a section having a high correlation with the reference image exists; and a distance between the vehicle and the object is equal to a distance between the vehicle and the section having the high correlation with said reference image.
1. A vehicle zone monitoring apparatus that detects a physical body present in the vicinity of the vehicle from infrared images photographed by a photographing device, comprising:
an object extraction device that extracts an object that emits infrared radiation from said infrared images;
an artificial structure identifying device that compares an image of a search zone in proximity to said object extracted by said object extraction device, to a reference image of a pre-registered artificial structure which serves as an element that defines an artificial structure, and that identifies said object as an artificial structure if:
within said search zone in proximity to said object, a section having a high correlation with said reference image exists; and
a distance between said vehicle and said object is equal to a distance between said vehicle and said section having the high correlation with said reference image; and
an artificial structure eliminating device that eliminates objects identified to be artificial structure by said artificial structure identifying device from the object extracted by said object extracting device.
2. A vehicle zone monitoring apparatus according to claim 1 , wherein:
said reference image includes an image that represents a straight line segment; and
said artificial structure identifying device identifies an object that includes a vertical straight line segment or a right angle segment, as an artificial structure.
3. A vehicle zone monitoring apparatus according to claim 2 , wherein:
said artificial structure identifying device comprises a reference image dimension altering device that alters a size of said reference image proportionally to the distance between said vehicle and said object.
4. A vehicle zone monitoring apparatus according claim 1 , wherein:
said artificial structure identifying device comprises a reference image dimension altering device that alters a size of said reference image proportionally to the distance between said vehicle and said object.
5. A vehicle zone monitoring apparatus according to claim 1 , wherein:
said reference image includes an image that represents a straight line segment; and
said artificial structure identifying device identifies an object that includes a straight line segment as an artificial structure.
6. A vehicle zone monitoring apparatus according to claim 1 , wherein:
said artificial structure identifying device comprises a reference image dimension altering device that alters a size of said reference image proportionally to the distance between said vehicle and said object.