Unravelling the Complexity of Indian Roads: Semantic Segmentation with LinkNet-UNet for Autonomous Vehicle Scene Understanding

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Smita Khairnar
Suresh Kolekar
Shilpa Gite
Biswajeet Pradhan
Bhagyesha Patil
Shrutee Dahake
Radhika Gaikwad
Atharva Choudhri

Abstract

As autonomous vehicles navigate through complex environments, understanding the scene poses a significant challenge. Traditional computer vision-based methods struggle to segment complex driving scenarios, making deep learning techniques increasingly popular. Semantic segmentation is essential for scene understanding in India’s cluttered and diverse roads, where structure is often lacking. In this paper, we evaluate the performance of deep learning-based architectures including Linknet and Unet for semantic segmentation using the driving dataset of India’s variety and cluttered roads, IDD-Lite. Through a series of experiments, we examine the combined effect of Linknet and Unet on IDD-lite. By harnessing the localization prowess and contextual understanding inherent in both models, our unified approach raises the bar for scene recognition tasks. Our approach is designed to work on Indian roads and prioritizes precision, efficiency and adaptability to various environmental conditions. Experimental results show our ensemble model has a MIoU of 0.69 and F1 score of 0.9. This is better than conventional ensemble methods and a big jump forward for semantic segmentation in autonomous driving systems for Indian roads.

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Author Biography

Biswajeet Pradhan, Centre for Advanced Modelling and Geospatial Information Systems (CAMGIS), School of Civil and Environmental Engineering, Faculty of Engineering and IT, University of Technology Sydney, NSW 2007, Australia

Distinguished Professor Biswajeet Pradhan is an internationally established scientist in the field of Geospatial Information Systems (GIS), remote sensing and image processing, complex modeling/geo-computing, machine learning, and soft-computing applications, natural hazards and environmental modeling, and remote sensing of Earth observation. He is also a distinguished professor at the University of Technology, Sydney. He is listed as the world’s most highly cited researcher by Clarivate Analytics Report for five consecutive years: from 2006 to 2020, he was one of the world’s most influential minds. From 2018 to 2020, he was awarded a World Class Professor position by the Ministry of Research, Technology, and Higher Education, Indonesia. He is a recipient of the Alexander von Humboldt Research Fellowship from Germany. In 2011, he received his habilitation in “Remote Sensing” from Dresden University of Technology, Germany. Between February 2015 and February 2022, he served as “Ambassador Scientist” for the Alexander Humboldt Foundation in Germany. Professor Pradhan has received 55 awards since 2006 in recognition of his excellence in teaching, service, and research. Out of his more than 832 articles (Total Citation: 83,010, H-index: 147, i10-index: 732), more than 755 have been published in Science Citation Index (SCI/SCIE) technical journals. He has written 12 books and 70 book chapters. 

He has completed 23 research projects, amounting to US$ 14 Million. He is a member of many international professional bodies such as the Committee of Space Research (COSPAR), Senior Member of IEEE, United Nations Outer Space Research Programme (UNOOSA), and many more. He sits as a board member of many national programs in Southeast Asia. He is a regular reviewer for many international bodies, alike the European Science Foundation, the Dutch Research Council, the Austrian Science Foundation, the Research Council UK (RCUK), the Swiss National Science Foundation, the Belgian Remote Sensing Program, and many more.

He is the Associate Editor and Editorial Member for more than 10 ISI journals. He has delivered 35 keynote and invited talks at international conferences. He has edited and reviewed more than 3300 articles.

He has supervised 55 Ph.D. students, 12 MSc students (with thesis), and 30 MSc students by coursework.
Prof. Pradhan has developed a strong research network internationally with organizations and universities in Malaysia, Germany, Norway, the Netherlands, Vietnam, Turkey, Thailand, South Korea, Mexico, Egypt, Canada, Iran, and Indonesia.

Professor Pradhan has widely travelled abroad, visiting more than 55 countries to present his research findings.