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Real-time measuring splicing method and device based on structured light

A real-time measurement, structured light technology, applied in the field of optical measurement and 3D modeling, can solve the problems affecting the speed of measurement, the degree of automation, efficiency and accuracy that cannot meet actual needs, and wrong corresponding points.

Inactive Publication Date: 2016-01-13
WENZHOU RES INST OF BEIHANG UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional ICP algorithm based on point-to-point distance is easy to introduce wrong corresponding points in the iterative process, and the efficiency and accuracy are difficult to meet the actual needs
[0005] Because the wrong points caused by rough stitching will have a great impact on the precise stitching of the ICP algorithm, the main three-dimensional measuring instruments at home and abroad mainly rely on the labeling method, that is, to improve the accuracy of rough stitching through human intervention, which also affects the measurement. speed and automation

Method used

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  • Real-time measuring splicing method and device based on structured light
  • Real-time measuring splicing method and device based on structured light
  • Real-time measuring splicing method and device based on structured light

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Embodiment Construction

[0054] refer to figure 1 As shown, a real-time measurement splicing method based on structured light in this embodiment to realize object measurement includes the following steps:

[0055] Step 1, performing calibration of camera parameters and calibration of rough stitching parameters;

[0056] Step 2, use the camera calibrated in step 1 to shoot the measured object from multiple angles of view, and stitch the acquired point cloud data;

[0057] Step 3: Structuring the remaining scattered point cloud data after splicing, and streamlining the point cloud;

[0058] Step 4: Use the point cloud visualization class provided by the PCL open source library to display the final processed point cloud and complete the measurement of the object.

[0059] By adopting the above-mentioned technical scheme, in the process of measurement, firstly use step 1 to set the equipment parameters before measurement and rough splicing parameters, and then use step 2 to shoot and splice the measured...

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Abstract

The invention discloses a real-time measuring splicing method and device based on structured light, and the method and device are used for measuring an object. The method comprises the following steps that 1) a camera parameter and a coarse splicing parameter are calibrated; 2) a camera which is calibrated in the step 1) is used to shoot the measured object at different visual angles, and obtained point cloud data is spliced; 3) residual scattered point cloud data after splicing is structured to simplify a point cloud; and 4) a point cloud visualization class provided by a PCL open source library is used to display the processed point clouds, and the object is measured. The real-time measuring splicing method based on the structured light can be used to effectively measured the object via the four steps, manual adjustment is not needed in the measurement process, and the measurement efficiency is effectively improved.

Description

technical field [0001] The present invention relates to a method for optical measurement and three-dimensional modeling, and more specifically relates to a real-time measurement splicing method based on structured light and its equipment. Background technique [0002] Automation is of great significance in modern manufacturing. In the field of three-dimensional measurement, the steps of obtaining an accurate model of an object mainly include the acquisition and splicing of point cloud data. [0003] Among them, the acquisition of point cloud data mainly includes laser scanning and raster measurement, and raster measurement has been widely used due to its high precision, large range, simplicity, and strong anti-interference ability. The basic idea of ​​the structured light method is to use the information of the grating image to help extract the geometric information in the object, obtain the distance between the object and the camera lens, and then obtain the three-dimension...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 盛浩
Owner WENZHOU RES INST OF BEIHANG UNIV
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