Armed with Expertise in the Remote Sensing Technology, Oka Completes his Doctoral Degree University General

Denpasar, Friday (11/07/2025), the Postgraduate Environmental Science Doctoral Study Program (PDIL) of Udayana University held a Phase II Final Examination (Open Examination) with Promovendus I Made Oka Guna Antara, S.Si., M.Si., M.Eng., which was conducted in the Hall Room of the Udayana University Postgraduate Building. Oka, who is a participant in the PDIL Postgraduate-Unud Double Degree Program with the Department of Environmental Remote Sensing, Division of Earth and Environmental Science, Graduate School of Science and Engineering, Chiba University, successfully defended his dissertation entitled “Development of a UAV-Based Beach Garbage Abundance Monitoring System and Deep Learning.” The doctoral promotion exam was chaired by the PDIL Postgraduate-University Coordinator, Prof. I Wayan Arthana, MS, PhD, and consisted of eight referees: Prof. Dr. Ir. I Wayan Nuarsa, M.Si., Prof. Dr. Ir. I Made Sudarma, MS, I Gede Hendrawan, S.Si., M.Si., Ph.D., Prof. Dr. Ir. I Wayan Sandi Adnyana, MS, I Wayan Gede Astawa Karang, S.Si., M.Si., PhD, Abd. Rahman As-syakur, SP, MSi, PhD, Prof. Ir. Ida Ayu Astarini, M.Sc., Ph.D., Prof. Dr. Ir. I Wayan Suarna, MS, and Prof. Dr. Drs. I Wayan Budiarsa Suyasa, MS; as well as four academic invitees: Dr. Drs. I Made Sara Wijana, M.Si., Dr. Pande Gde Sasmita Julyantoro, S.Si., M.Si., Dr. Nyoman Dati Pertami, S.P., M.Si., and Prof. Dr. Ir. I Nengah Sinarta, ST, MT, IPM, ASEAN, Eng.




In his research, Oka explained that plastic waste in the ocean has a significant negative impact on the environment and human life, so optimizing waste monitoring is an urgent need. Technological approaches can provide more accurate information to support appropriate programs and decision-making. Also mentioned by Oka, this research aims to develop a marine debris monitoring system in coastal areas through a combination of UAV-based remote sensing and classification automation using deep learning. The final product is expected to significantly accelerate marine debris monitoring with high efficiency. However, the main challenges are the development of a more intuitive interface as well as improving the quality and quantity of datasets, Oka concluded in his presentation.




Meanwhile, Prof. Dr. Ir. I Wayan Nuarsa, M.Si., as the promoter who has contributed a lot to the promovendus' dissertation process, in his speech congratulated the promovendus, his family and PDIL where Oka studied. Prof. Nuarsa also added that Oka's research combines environmental concerns with the latest technological advances, amid the large amount of marine debris that threatens coastal ecosystems. It is hoped that this innovation will not only have academic value, but also great potential in policy and real action in the field for stakeholders, concluded Prof. Nuarsa in his speech (DK).