Multi-mode 3D scanning method and system
A three-dimensional scanning and multi-mode technology, applied in the field of three-dimensional scanners, can solve the problems of limited usage scenarios, high cost, and cumbersome process of objects in different scenarios, etc., to achieve high cost performance, increase reusability, and reduce usage cost effect
Active Publication Date: 2021-11-16
SCANTECH (HANGZHOU) CO LTD
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Problems solved by technology
[0005] In order to overcome the problems of limited use scenarios of existing handheld scanners, cumbersome scanning process of objects in different scenes, and high cost, the present invention provides a multi-mode three-dimensional scanning method and system, which has a plurality of different band lasers, different reconstruction mode, suitable for multiple scanning scenarios, increasing the reusability of a single scanner, reducing the cost of use, and high cost performance
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[0030] The present invention will be further described below in conjunction with the accompanying drawings.
[0031] refer to Figure 1 ~ Figure 3 , a multi-mode three-dimensional scanning method, comprising the following steps:
[0032] S1. Obtain the internal and external parameters of the calibrated camera in different scanning modes. When switching the scanning mode, the internal parameters of the camera will trigger the corresponding transformation synchronously;
[0033] S2. The user selects and executes the corresponding scanning mode according to the scanning requirements:
[0034] S21. Laser projection scanning mode: perform laser projection, obtain 2D laser line and marker point images and extract 2D laser line and marker point information, use triangulation or epipolar principle to reconstruct 3D laser line point cloud and marker points, and according to The existing marker point matching information obtains the conversion relationship of the front and rear frame ...
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A multi-mode three-dimensional scanning method, comprising the following steps: S1, obtaining internal parameters and external parameters of a calibrated camera in different scanning modes, and when switching the scanning modes, the camera internal parameters trigger corresponding transformations synchronously; S2, the user according to the scanning requirements , and choose to perform laser projection scan mode, speckle projection scan mode, or transition scan mode. During the whole scanning process, continuous fusion and transformation, the speckle reconstruction and the laser line reconstruction are unified into the same coordinate system, and the point cloud of the surface of the scanned object is output. And a multi-mode three-dimensional scanning system is provided. The invention is suitable for various scanning scenarios, increases the reusability of a single scanner, reduces the use cost, and has high cost performance.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional scanners, and relates to a multi-mode three-dimensional scanning method and system. Background technique [0002] In recent years, the 3D scanning industry has developed rapidly, and handheld laser scanners, handheld photo scanners, fixed photo scanners and other laser 3D reconstruction measurement devices have appeared. Most of the structures of the above-mentioned devices use a combination of an optical projection device and an industrial lens, and obtain the three-dimensional surface information of the measured object according to the principle of three-dimensional reconstruction. Among them, hand-held scanners are widely used in industries such as automobiles, aviation, ships, cultural relics protection and medical treatment because of their portability. [0003] In the 3D reconstruction based on laser and industrial lens, different bands of lasers have different effects on 3D recon...
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IPC IPC(8): G01B11/00
CPCG01B11/002G01B11/2513G06T7/521G06T2207/10048G06T2207/10024G06T7/85G06T15/04G06T2207/10028G06T7/30
Inventor 郑俊焦吾振张立旦
Owner SCANTECH (HANGZHOU) CO LTD