Cylindrical target for three-dimensional laser scanning system

Abstract

The invention relates to a cylindrical target for a three-dimensional laser scanning system, comprising a target main body, a base and a connecting column which are in an integral structure. The target main body is in a cylinder shape, and the cylindrical outer surface is coated with reflectorized paint or reflective paper to form a cylindrical reflective surface. The seat is a cylinder which has the same axis with the target main body, one end is connected with the target main body through the connecting column, and the center of the other end is provided with a thread hole and then can be connected with a tripod. Thus, a laser scanner can scan the cylindrical target from different station points, and is equivalent to scan against the cylindrical reflective surface. By scanning the cylindrical target through the laser scanner from different station points, the simulated positions of the center axis of the cylindrical target is the same. When the invention is sued for carrying out the registration operation of three-dimensional laser scanning, the target distribution is convenient, the field operation time is shortened, and the registration precision is high.

Description

technical field [0001] The invention relates to the technical field of three-dimensional laser scanning, in particular to a structural improvement of a target required for three-dimensional laser scanning. Background technique [0002] Using the method of arranging targets in the scene to register the point cloud data obtained by the 3D laser scanner has the characteristics of high precision and fast speed. [0003] In the existing planar structure target, when the angle between the line from the point where the laser emits from the scanner to the point on the target and the planar target is small, misidentification or failure to find the target often occurs. In addition, targets with a planar structure generally need to be fixed in the scene by pasting. If the scanned object is not allowed to be pasted, such as cultural relics, artworks, etc., the fixation of the target becomes a headache. In some cases, the light reflection intensity of the scanned object is high, which w...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a cylindrical target for a three-dimensional laser scanning system, set the reflective surface as a cylindrical shape, solve the problem that the plane target is limited by the incident angle of the laser, and also solve the hemispherical target. The problem that the center coordinates of the planar target change during the rotation process

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