3D Attitude Angel Optical Measurement System with Large Field of View
The optical measurement of 3D attitude angles is to achieve the measurement of object angular posture by processing object's surface optical image.To improve the accuracy of 3D attitude angle optical detection,an optical measurement system design based on stereoscopic vision for large field of view is proposed.By using a dual baseline parallel collimating light source and attitude sensor,the system achieves the functions of spot segmentation and centroid positioning through components such as the image sensor and USB interface chip.On the basis of the Linux kernel,the system designs four software modules including the signal collection,data porting,serial communication,and attitude angle analysis.Meanwhile,a stereoscopic vision algorithm is introduced to explore the correspondence between target points and image pixels,a parallax theorem is used to establish the tridimensional coordinates of spatial angles,and realize the large-field 3D attitude angle measurement.Experimental results show that the system has small attitude angle calibration errors,strong time synchronization,and a measurement cumulative time of less than 15 s,with a high measurement accuracy and robustness,providing an effective technical means for measuring the precision parts of mechanical equipment.
NETL
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