(UAS, commonly known as drone) with an onboard stereo-vision system capable of acquiring, storing and transmitting images for analysis to obtain full-field, three-dimensional displacement and strain measurements.Methods The UAS equipped with a StereoDIC system has been developed and tested in the ...
The joint angles, displacement and velocity, histogram of oriented gradients (HOG), 3D points, and geodesic Distance are included. These features are optimized using Quadratic Discriminant Analysis (QDA) and utilized in a Neuro-Fuzzy Classifier (NFC) for activity classification. Real-world evaluations...
Adoption of drone-based monitoring may be especially useful in light of climate change and the possible displacement of southern Appalachian red spruce (and spruce-fir) ecosystems by the upslope migration of deciduous trees.Ryley C. HarrisLisa M. Kennedy...
In field tests, this radar was verified to detect targets remotely from a distance of about 1.6 km and to measure displacement with an accuracy of about 0.2 mm. In a long-term demonstration test conducted inside an open-pit mine, the radar-collected data clearly captured the precursor ...
However, failures may occur when there is a large displacement of the drones. 4. Experiment and Discussion This section first presents the commonly used datasets and evaluation metrics for vision-based drone detection. Then, some results of the existing methods are listed. 4.1. Datasets 4.1.1. ...
DeepFlow: Large displacement optical flow with deep matching. In Proceedings of the IEEE International Conference on Computer Vision, Sydney, Australia, 2–8 December 2013; pp. 1385–1392. [Google Scholar] Lowe, D.G. Distinctive Image Features from Scale-Invariant Keypoints. Int. J. Comput. ...
We measured the vertical displacement of a target with a 50-mm-pitch grid pattern in the laboratory to verify its effectiveness. The newly developed measurement technology alleviates the restriction that the camera must be fixed and enables the measurement of the deflection of a more significant ...
Finally, the inverse compositional Gauss鈥揘ewton (IC-GN) iteration method is used to further calculate the displacement and strain information accurately on the basis of the initial values. The novelty of this paper is to fuse the ring projection transform and orientation codes in machine vision ...
and method for measuring the flow rate of a river based on a drone image, which enables efficient flow rate measurement without relying on a ground reference point by calculating the flow rate through the time interval between two images and the displacement of the tracker in the two images. ...
Lastly, computational validation of the UAV's main components' structural integrity is achieved through finite element analysis (FEA), affirming the absence of issues regarding stress and displacement. In conclusion, this research underscores the efficacy of PULSAR, marking a significant leap forward in...