An approach to improving sound-based vehicle speed estimation

• URL: http://arxiv.org/abs/2204.05082v1
• Date: Fri, 8 Apr 2022 12:58:35 GMT
• Title: An approach to improving sound-based vehicle speed estimation
• Authors: Nikola Bulatovic, Slobodan Djukanovic
• Abstract summary: We consider improving the performance of a recently proposed sound-based vehicle speed estimation method. The method is tested on the VS10 dataset, which contains 304 audio-video recordings of ten different vehicles.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We consider improving the performance of a recently proposed sound-based vehicle speed estimation method. In the original method, an intermediate feature, referred to as the modified attenuation (MA), has been proposed for both vehicle detection and speed estimation. The MA feature maximizes at the instant of the vehicle's closest point of approach, which represents a training label extracted from video recording of the vehicle's pass by. In this paper, we show that the original labeling approach is suboptimal and propose a method for label correction. The method is tested on the VS10 dataset, which contains 304 audio-video recordings of ten different vehicles. The results show that the proposed label correction method reduces average speed estimation error from 7.39 km/h to 6.92 km/h. If the speed is discretized into 10 km/h classes, the accuracy of correct class prediction is improved from 53.2% to 53.8%, whereas when tolerance of one class offset is allowed, accuracy is improved from 93.4% to 94.3%.

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