| 摘要 |
PROBLEM TO BE SOLVED: To enable an all-azimuth automatic survey to be performed without moving survey machines by computing the distance, direction and elevation of a survey sphere from the image of the sphere which two vertically and horizontally rotatable cameras disposed at both ends of a base line follow up and photograph. SOLUTION: An elevation, direction and distance computing/controller 8 vertically and horizontally revolves monitoring cameras 3 and 4 so that the cameras 3 and 4 follow up a survey sphere 1 disposed at the top end of a survey rod 2. The contour line of the sphere 1 is extracted from the images to take the motion of camera images following up the sphere 1 as a circle. The cameras are revolved to approach the circle on the image to the center of a screen and superpose it on this center. The controller 8 computes and records the distance and the direction from the angles between the cameras 3, 4 and camera arms 7 and arm lengths. According to the output of the controller 8 the cameras 3, 4 automatically follow up the sphere 1 so as to record only measured data when a measuring point 10 stands at the same point for 10 sec.
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