Title:
RANGE FINDER MECHANISM BY IMAGE PROCESSING
Document Type and Number:
Japanese Patent JPH0561546
Kind Code:
A
Abstract:
PURPOSE:To unnecessitate plural image sensors by obtaining two image data based on the positional change with time of the image sensors and measuring the distance to a target based on the viewfield angles of the image data and the moved distance between them. CONSTITUTION:An image sensor 2 attached to a mobile object acquires the image data on a target 1 by the infrared rays (passive). An image processor 3 analyzes the viewfield angle for the full length of the target 1 based on the image data given from the sensor 2. The viewfield angles lambda1 and lambda2 are respectively measured at time points t1 and t2 and outputted to a computer 5. Meanwhile an inertia navigation device 4 measures respectively the positional coordinates (x1, y1) and (x2, y2) at the points t1 and t2. Then the computer 5 calculates the moved distance between both coordinates and then calculates the distance between the mobile object and the target 1 based on the angles lambda1 and lambda2 and the moved distance between them.
Inventors:
YANO HIROSHI
Application Number:
JP22312391A
Publication Date:
March 12, 1993
Filing Date:
September 03, 1991
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
G01C3/06; G05D1/12; G05D3/12; G06T1/00; F41G7/22; (IPC1-7): F41G7/22; G01C3/06; G05D1/12; G05D3/12; G06F15/62
Attorney, Agent or Firm:
Toshiro Mitsuishi (1 person outside)
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