Browse Items (4 total)
- Fresno State author is exactly "Yushin Ahn"
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Spatio-Temporal Analysis of the Roadside Transportation Related Air Quality (STARTRAQ) and neighborhood characterization
o promote active transportation modes (such as bike ride and walking), and to create safer communities for easier access to transit, it is essential to provide consolidated data-driven transportation information to the public. The relevant and timely…
Bridge Monitoring Using a Digital Camera: Photogrammetry-Based Bridge Dynamic Deformation Monitoring
Monitoring the health of bridges uses various sensors and techniques and provides quantitative and reliable data on the condition of bridges. Among measurable quantities, vibration induced by traffic loads has been known as a good indicator of the…
Enhancement of UAV-based Spatial Positioning Using the Triangular Center Method with Multiple GPS
Recently, a technique for acquiring spatial information data using UAV (Unmanned Aerial Vehicle) has been greatly developed. It is a very crucial issue of the GIS (Geographic Information System) mapping system that passes way point in the unmanned…
A Comparative Assessment of the Photogrammetric Accuracy of Mapping Using UAVs with Smart Devices
This article evaluates UAV photogrammetry systems using smartphones and smart cameras. Image triangulation was conducted in accordance with interior orientation parameters, determined by camera self-calibration. Precise orthomosaic images and digital…