ELDEMIRY Amr is a PhD Candidate at the Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University. He received his MSc in Geomatics at the Civil Engineering-Public Works Department, Faculty of Engineering, Cairo University, Egypt. He also received his bachelor's degree in civil engineering at the Civil Engineering Department, Faculty of Engineering, Cairo University, Egypt. Currently, his works focus on SLAM mainly for autonomous exploration and navigation planning using mobile robots at unknown GNSS-denied environments.