Distance detection system for vehicles
First Claim
1. A distance detection system for an automobile, having an imaging system for imaging external objects in a required range from a plurality of different directions and for obtaining a plurality of pictures corresponding to said different directions, and a picture processing unit for processing said pictures and for outputting a distance distribution in an entire image of said required range, the picture processing unit comprising:
- coincidence calculation means for dividing said pictures of said required range into a plurality of small regions and for performing a calculation of the coincidence between each of said plurality of small regions in one of said pictures and at least one region in at least one of the other pictures;
discrepancy amount determination means for determining discrepancy amounts at corresponding small regions over an entire picture on the basis of a maximum value of the degree of coincidence corresponding to said regions.
1 Assignment
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Accused Products
Abstract
An automobile distance detection system includes an image camera system which photographs an object which exists in a required range external to an automobile, from a plurality of different directions and obtains a plurality of pictures, and a picture processing unit which processes the plural number of pictures photographed by the camera system and outputs a distance distribution for an entire picture. The image processing unit includes a coincidence calculation element which performs high-speed calculation of a degree of coincidence for each required region, and corresponding to the plural number of pictures photographed by the camera system, and a discrepancy amount determination element determines discrepancy amounts corresponding to the plural number of pictures on the basis of a minimum value for the coincidence, as information relating to the distance distribution.
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Citations
22 Claims
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1. A distance detection system for an automobile, having an imaging system for imaging external objects in a required range from a plurality of different directions and for obtaining a plurality of pictures corresponding to said different directions, and a picture processing unit for processing said pictures and for outputting a distance distribution in an entire image of said required range, the picture processing unit comprising:
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coincidence calculation means for dividing said pictures of said required range into a plurality of small regions and for performing a calculation of the coincidence between each of said plurality of small regions in one of said pictures and at least one region in at least one of the other pictures; discrepancy amount determination means for determining discrepancy amounts at corresponding small regions over an entire picture on the basis of a maximum value of the degree of coincidence corresponding to said regions. - View Dependent Claims (2, 3, 4, 5)
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6. A distance detection system for a vehicle, having first and second cameras provided on said vehicle to image external objects, comprising:
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means for dividing images detected by said first and second cameras into a plurality of small regions; coincidence determining means for determining a degree of coincidence between said images in each of said small regions; and discrepancy amount determining means responsive to said degree of coincidence for determining a discrepancy amount between said images at each of said small regions, whereby discrepancy amounts over entire images represent a distance distribution in said image. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A distance detecting system for a vehicle comprising:
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first image taking means for taking a first optical image in a predetermined area; second image taking means distanced from a position of said first image taking means for taking a second optical image in said predetermined area; coincidence calculation means for dividing said first optical image into a plurality of predetermined regions and for calculating a degree of coincidence between said plurality of predetermined regions and regions in said second optical image; and discrepancy amount determining means for determining a discrepancy amount between a region in said second optical image corresponding to said predetermined region and a region in said second optical image which has a maximum degree of coincidence with said predetermined region and for storing said discrepancy amount into memory means at an address representing said predetermined region. - View Dependent Claims (21, 22)
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Specification