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Calibration method for conveniently determining scale of photography after 3D reconstruction

A technology of 3D reconstruction and calibration method, which is applied in the field of image processing, can solve the problems of complicated operation, long time for 3D reconstruction, high instrument cost, etc., and achieve the effect of simple operation, flexible adjustment of use cost, and simple production

Inactive Publication Date: 2019-04-09
成都天佑智隧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] This method is more complicated to operate, and the cost of the instrument is also higher. The operation of 3D reconstruction of larger objects is more complicated, and the time taken for 3D reconstruction will be longer.

Method used

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  • Calibration method for conveniently determining scale of photography after 3D reconstruction
  • Calibration method for conveniently determining scale of photography after 3D reconstruction

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Embodiment Construction

[0032] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0033] like figure 1 Shown: A convenient calibration method for determining the photographic scale after 3D reconstruction,

[0034] Take the following steps,

[0035] Step 1: Select the scene that needs to be image collected;

[0036] Step 2: An image acquisition device 1 , a laser range finder 5 and an angle measurement device 6 are installed in the scene, and the image acquisition device 1 is horizontally fixed in the scene, and the image acquisition device 1 is a camera.

[0037] The laser range finder 5 and the angle measuring device 6 are arranged in front of the image acquisition device 1;

[0038] Step 3: The laser range finder 5 deter...

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Abstract

The invention relates to a calibration method for conveniently determining a scale of photography after 3D reconstruction. The method comprises the following steps of: first, selecting a scene, imagesof which are to be collected; and second, setting an image collection device, a laser range finder and an angle measurement device in the scene, wherein the image collection device is horizontally fixed in the scene, and the laser range finder and the angle measurement device are arranged in front of the image collection device. The method provides a picture gesture position parameter of a staticobject and a picture control point parameter in multi-item 3D reconstruction; and precision errors caused by manual operation are reduced as the laser range finder is directly used for ranging.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a convenient calibration method for determining the photographic scale after three-dimensional reconstruction. Background technique [0002] At present, there are various types of image feature matching and 3D reconstruction software at home and abroad, and the application from theory to practice has become increasingly mature, but most of them directly use the photos taken by the camera to perform 3D reconstruction based on the camera coordinate system, such as Smart 3D Capture , Agisoft Photoscan, Visual SFM and other software; Nowadays, people only need to reconstruct the geometric relationship for 3D reconstruction, but now they hope to directly obtain the real size of the project through 3D reconstruction. The software wants to reconstruct the model more accurately or obtain real Model parameters require external orientation elements such as positions and angles in addition t...

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Application Information

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IPC IPC(8): G01C11/00G01B11/24G06T17/00
Inventor 仇文革简辽段东亚程云建
Owner 成都天佑智隧科技有限公司