1. Estimating helmet wearing rates via a scalable, low-cost algorithm: a novel integration of deep learning and google street view
- Author
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Qingfeng Li, Xianglong Wang, and Abdulgafoor M. Bachani
- Subjects
Helmet ,Motorcyclists ,Deep learning ,Google Street View ,Low-cost and scalable algorithm ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Introduction Wearing a helmet reduces the risk of head injuries substantially in the event of a motorcycle crash. Countries around the world are committed to promoting helmet use, but the progress has been slow and uneven. There is an urgent need for large-scale data collection for situation assessment and intervention evaluation. Methods This study proposes a scalable, low-cost algorithm to estimate helmet-wearing rates. Applying the state-of-the-art deep learning technique for object detection to images acquired from Google Street View, the algorithm has the potential to provide accurate estimates at the global level. Results Trained on a sample of 3995 images, the algorithm achieved high accuracy. The out-of-sample prediction results for all three object classes (helmets, drivers, and passengers) reveal a precision of 0.927, a recall value of 0.922, and a mean average precision at 50 (mAP50) of 0.956. Discussion The remarkable model performance suggests the algorithm’s capacity to generate accurate estimates of helmet-wearing rates from an image source with global coverage. The significant enhancement in the availability of helmet usage data resulting from this approach could bolster progress tracking and facilitate evidence-based policymaking for helmet wearing globally.
- Published
- 2024
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