Optical positioning technology based on image calibration (contact email: meddut@dlut.edu.cn)
I. Product and Technology Introduction:
The optical positioning technology based on image calibration is mainly composed of five parts: binocular vision positioning system, mechanical support, feature identification device, camera calibration template and software system. Its working principle is to use the camera calibration and three-dimensional reconstruction theory in the field of computer vision. This technique can accurately measure the geometric size of the object in the field of view, and the measurement mean square error can reach the level of millimeters. It has good real-time performance and robustness. At the same time, this technology has the advantage of non-contact measurement, which does not affect the normal work of the tested object, reduces manual intervention, and avoids wear caused by contact measurement.
Main functions of the software system:
- real-time preview by binocular camera;
- Simultaneous/separate image acquisition by binocular camera;
-- Individual/systematic calibration of binocular cameras, visual display and storage of calibration results;
-- 3D measurement of the geometric size of the measured object, and 3D object can be reconstructed;
-- Aiming at the visual dead Angle, the feature identification device can be used to collect the feature lattice and conduct the three-dimensional measurement of the measured object;
- Measurement accuracy analysis;
- Real-time help for software system operation.
Ii. Scope of application:
Optical measurement, positioning and tracking of various industrial and scientific research units.
Production conditions: the main equipment required: 2 or 3 cameras, mechanical support, feature identification equipment, camera calibration template.
Dedicated software systems for different measurement environments are required.
Iii. Intellectual property rights, such as patents
A patent has been filed.
Iv. Scale and Investment:
The investment of each optical positioning system does not exceed 20,000 yuan.
Estimated cost:
On the premise of self-processing mechanical support, feature identification equipment and calibration template, a special research laboratory is set up, and several cameras are purchased. The cost of optical positioning system is between 8000 yuan and 15000 yuan per unit.
Degree of industrialization: 1. Laboratory stage
V. Degree of technology provision and mode of cooperation:
Provide all the hardware and software required for the whole technology and train the operators.
Vi. Market and Benefits:
This technology can avoid instrument wear and labor costs caused by contact measurement, and the measurement and positioning accuracy is in the millimeter level, which is equivalent to the contact measurement accuracy. It has great market application potential and considerable benefits.
