Surveying device and automatic tracking method

摘要

The present invention provides a surveying device, comprising a first image pickup unit 11 for projecting a laser beam and for receiving a reflection light from a target supported by a support member, a second image pickup unit 12 for acquiring an image including the target and with a field angle wider than a field angle of the first image pickup unit, drive units 15 and 17 for shifting collimating directions of the first image pickup unit and the second image pickup unit in a horizontal direction and in a vertical direction respectively, an image processing unit 24 for processing images taken by the first image pickup unit and by the second image pickup unit, and a control arithmetic unit 22 for controlling said drive units so that the first image pickup unit and the second image pickup unit are directed toward the target based on the image processing of the image taken by the first image pickup unit and on the image processing of the image taken by the second image pickup unit, wherein the image processing of the image by the first image pickup unit is a light spot detection processing to obtain a light spot from the target, wherein the image processing of the image by the second image pickup unit is an image matching with a template image as set up according to the image of said support member, and wherein the control arithmetic unit controls the drive units so that a tracking of the target is performed based on the either result of said light spot detection processing or the result of said image matching.