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Three-dimensional scanner based on galvanometer

A scanner and three-dimensional technology, applied in the field of three-dimensional measurement, can solve the problems of large size, high cost and high power consumption, and achieve the effect of small size, low cost and low power consumption

Inactive Publication Date: 2016-12-21
WISESOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that most existing projection technologies are not suitable for projecting striped structured light, or can project striped structured light but have large volume or high power consumption, or high cost, the purpose of the present invention is to provide a low-cost 3D scanner based on galvanometer, small size and capable of multi-frame structured light mode projection

Method used

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  • Three-dimensional scanner based on galvanometer
  • Three-dimensional scanner based on galvanometer
  • Three-dimensional scanner based on galvanometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A galvo-based 3D scanner such as figure 1 As shown in the solid line, it includes a vibrating mirror 100, a vibrating mirror driving circuit 200, a system control circuit 300, and a first camera 401; the vibrating mirror 100 is connected to the vibrating mirror driving circuit 200, receives and responds to the vibrating mirror driving The vibrating mirror driving signal sent by the circuit 200; the vibrating mirror driving circuit 200 is connected to the system control circuit 300, receives and responds to the vibrating mirror control signal sent by the system control circuit 300; the first camera 401 and the described The system control circuit 300 is connected to receive and respond to the external trigger signal sent by the system control circuit 300; the system control circuit 300 receives the external control command Sig-in. The external control command Sig-in comes from a main control hardware system, and the main control hardware system includes a computer and an...

Embodiment 2

[0039] Such as figure 1 As shown by the solid line plus the dotted line, the difference between Embodiment 2 and Embodiment 1 is that a binocular three-dimensional scanner solution is provided, which also includes a second camera 402, and the second camera 402 and the first camera 401 are respectively connected with the system The control circuit 300 is connected. The system control circuit 300 receives the external control command Sig-in, and sends an external trigger signal to the first camera 401 and the second camera 402 at the same time, and the two cameras take pictures at the same time. The timing diagram is as follows image 3shown. After taking pictures, an image sequence Sig-out is output from the first camera 401 and the second camera 402 . For the solution of the multi-eye 3D scanner, refer to the solution of the binocular 3D scanner in Embodiment 2. It is only necessary to increase the number of cameras, and the multiple cameras are respectively connected to the...

Embodiment 3

[0041] The difference between Embodiment 3 and Embodiments 1 and 2 is that the vibrating mirror 100 is a one-dimensional scanning vibrating mirror, and the light energy distribution of the structured light field projected by the one-dimensional scanning vibrating mirror in the one-dimensional direction is determined by the vibrating mirror control signal Decide.

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Abstract

The invention relates to the field of three-dimensional measurement, in particular to a three-dimensional scanner based on a galvanometer. The three-dimensional scanner comprises a galvanometer, a galvanometer driving circuit, a system control circuit and a camera, wherein the galvanometer is connected with the galvanometer driving circuit, receives and responds to a galvanometer driving signal sent by the galvanometer driving circuit; the galvanometer driving circuit is connected with the system control circuit, receives and responds to a galvanometer control signal sent by the system control circuit; the camera is connected with the system control circuit, receives and responds to an external triggering signal sent by the system control circuit; and the system control circuit receives an external control command. The three-dimensional scanner based on the galvanometer provided by the invention has the advantages of small size, low cost and low power consumption, and can effectively complete multi-frame structured optical mode projection and synchronous photographing.

Description

technical field [0001] The invention relates to the field of three-dimensional measurement, in particular to a three-dimensional scanner based on vibrating mirrors. Background technique [0002] Computing 3D data of object surface shape from digital images is the focus of long-term research in the field of optical 3D sensing. It has applications in industrial measurement, reverse engineering, visual navigation, aerospace, film and television entertainment, virtual reality, plastic surgery and other fields, and low-cost 3D scanners have received great attention. Microsoft Kinect and Intel RealSense are consumer 3D shape acquisition devices, mainly for applications that do not require high accuracy of 3D point cloud data, such as somatosensory and large scene modeling. At present, high-precision 3D scanners are usually expensive and bulky, while low-cost, small-sized, and moderately accurate 3D scanners are severely lacking. [0003] 3D scanners generally use active structur...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCG01B11/2433
Inventor 荆海龙刘兴旺张国真
Owner WISESOFT CO LTD