| 摘要 |
PROBLEM TO BE SOLVED: To provide a range finder capable of calculating the distance of an object from an infrared image picked up by the image pickup means provided to a vehicle on the basis of the reduced quantity of operation with high accuracy. SOLUTION: The image range finder is constituted so as to calculate the distance from the image pickup means to the object using two infrared images picked up by the image pickup means. The finder is provided with an image dividing means 16 for dividing one image subjected to multiple-valued processing into pattern regions having a predetermined size, a parallax calculation means 17 performing the correlational operation of two infrared images at every pattern region divided by the image dividing means 16 to calculate parallax at every pattern region to convert the same to the distance value of the pattern region, a distance image forming means 18, and a distance value clustering means 20 for classifying the pattern region at every pattern region similar in distance value on the basis of the distance value calculated by the distance image forming means 18 to recognize the same as one group and calculating the distance value of the recognized group to set the same to the distance value up to the object.
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