Three-dimensional scanning magic box

Abstract

The invention provides a three-dimensional scanning magic box. The three-dimensional scanning magic box comprises a shell; a turntable for carrying an object to be scanned is arranged in the shell; the turntable is connected with a stepping motor; a fixing bracket is arranged in the shell; a line laser sensor and a camera are both arranged on the fixing bracket; the stepping motor drives the object to be scanned on the turntable to rotate; line laser emitted by the line laser light is projected onto the surface of the object to be scanned; the camera captures a laser image of the surface of the object to be scanned and transmits the laser image to a control unit; and the control unit processes the received image, obtains the spatial coordinates of any point on the surface of the object, generates the three-dimensional model of the object and outputs the three-dimensional model. The three-dimensional scanning magic box provided by the invention has the advantages of small size, fast speed, low cost, easy and convenient operation and suitability for large-scale promotion and use.

Description

technical field [0001] The invention relates to the fields of computer vision and electronic technology, in particular to a laser three-dimensional scanner. Background technique [0002] 3D scanners can be used to scan real-world objects to obtain 3D surface data. Its application fields are extremely wide, such as industrial design, reverse engineering, criminal identification, cultural relic collection, etc. According to different technical methods, it can be mainly divided into triangular ranging method, time-of-flight method and structured light source method. [0003] The triangulation method uses a laser sensor to emit a laser line to the surface of the object to be measured, and then uses a camera to detect the laser spot on the surface of the object to be measured. The laser spot, the camera and the laser sensor itself form a triangle. The angle of the camera in the triangle is judged by the position of the laser spot in the image collected by the camera, and then t...

AI Technical Summary

Problems solved by technology

[0008] The structured light source method is suitable for indoor scenes, and the scanning accuracy is high enough, but the scanning speed is slow and the parameter settings are complicated, so it is suitable for specific industries and not for daily use

The technical deficiencies of the triangulation ranging method are usually manifested in: 1. The balance between scanning speed and accuracy

The choice of laser line spacing is very important, generally 0.1mm, if the spacing is too large, although the scanning speed can be accelerated, but the accuracy is not enough

Conversely, if the spacing is too small, the scanning speed will decrease

2. A large amount of splicing data

To fully scan the object under test, at least the data of six surfaces need to be scanned, and the data coordinates of these six surfaces are not in the same coordinate system, but in the equipment coordinate system, which requires subsequent artificial merging, which requires a large amount of work. , and the effect is not good

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