Browsing by Author "Herath, OK"

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item: Conference-Full-text
Investigating the impact of the snow removal process by introducing image processing into interrupted time series analysis
(Sri Lanka Society of Transport and Logistics, 2023-08-26) Herath, OK; Motoya, K; Harakawa, R; Kamiishi, I; Nakayama, T; Iwahashi, M; Gunaruwan, TL
In countries with winter seasons, the danger of driving on expressways is significant. Thereby, these countries pour resources into snow removal infrastructure and methods to ensure reliable transportation even when snowfall accumulates. In particular, monitoring the effectiveness of snow removal on expressways is crucial for keeping traffic moving unimpeded. By introducing image analysis into interrupted time series analysis, we provide a novel approach to quantify the impact of snow removal. Experiments on real data in Japan were conducted. The results show that snow removal decreased the visibility level defined by the average luminance values by 70.98%.
item: Article-Full-text
Use of videography for traffic surveys in Sri Lanka
(2021) Herath, OK; Perera, P; Sivakumar, T; Ayesha, B; Kumarage, AS; Perera, AS
Traffic Surveys are crucial for different transport studies like Origin-Destination studies, Traffic Volume estimations, Vehicle Flow characteristics Determinations, Speed and Delay Studies, Turning Movement analysis, Parking Analysis etc. Currently, Sri Lankan researchers are using mostly human-based manual surveys and semi-automated methods for Traffic Surveys. However, there is an issue in cost, effort, the value of time, and the accuracy of data gathering in the above methods. Therefore, under Accelerating Higher Education Expansion and Development (AHEAD) grant, we are researching the possibility of doing surveys using videography and Artificial Intelligence technologies for continuous and accurate data collection to reduce the burden that is currently facing.