PolyU Cloud Lecture Hall - The Greater Bay Area (GBA) from Space: Daytime vs. Nighttime, and Big Data vs. Small Data
Conference / Lecture
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Date
07 May 2022
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Organiser
Global Engagement Office
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Time
14:00 - 15:00
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Venue
Online via Zoom
Speaker
Prof. Qihao WENG
Summary
(只有中文版本)
遙感技術與實地調查相結合，可用於觀測、監測、測量和模擬構成自然和人類生態系統的許多組成部分。在社會需求和衛星和傳感器技術和圖像處理技術（如人工智能）的推動下，我們目睹了全球研發、技術轉讓和工程应用的巨大增長。自20世紀90年代以來，商業衛星、高光譜成像、激光雷達和雷達技術得到發明或重新發明。與互聯網技術和地理信息系統的集成導致了谷歌地球等網絡上地理參考信息的出現。這些新的"地理虛擬世界"，結合GPS，移動地圖和現代電信技術，已引起政府、行業和公眾的極大興趣。遙感 “大數據” 的增長伴隨著免費中低分辨率衛星圖像而发展。隨著衛星圖像採集的時間分辨率不斷提高，特別是那些具有高空間分辨率的圖像，導致任何地点的圖像積累增加，為時間序列分析和場景動態的實時評估創造了可能性。自 1992 年以來，衛星收集的夜間燈光圖像已越來越多地用作人類住區和活動的指標，利用時間序列夜間燈光圖像來監測城市增長，分析社會經濟和環境變量的動態，並評估城市化的環境後果。本講座拟探討使用白天和夜間的時間序列卫星圖像，通過比较大数据和小数据方法來分析大灣區的城市化过程，討論两個關鍵科學問題：（1）時間序列圖像如何用於表徵和量化城市化進程？ (2) 是否可以提取夜間燈光特徵來增強白天圖像，以繪製和表徵各種類型的城市土地利用變化？
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Keynote Speaker
Prof. Qihao WENG
Associate Director of Research Institute for Land and Space (RILS)
Chair Professor of Geomatics and Artificial Intelligence
Department of Land Surveying and Geo-Informatics
Prof. Qihao Weng, a Foreign Member of the Academy of Europe (Academia Europaea), and a Fellow of IEEE, AAAS, ASPRS, and AAIA, is a Chair Professor at the Hong Kong Polytechnic University, and worked as the Director of the Center for Urban and Environmental Change and a Professor of Geography at Indiana State University, 2001-2021, and as a Senior Fellow at the National Aeronautics and Space Administration from 2008 to 2009. He received his Ph.D. degree in geography from the University of Georgia in 1999. Weng is the Lead of GEO Global Urban Observation and Information Initiative, 2012-2022, and an Editor-in-Chief of ISPRS Journal of Photogrammetry and Remote Sensing. Additionally, he serves as the Series Editor of Taylor & Francis Series in Remote Sensing Applications, and Taylor & Francis Series in Imaging Science. Weng has been the Organizer and Program Committee Chair of the biennial IEEE/ISPRS/GEO sponsored International Workshop on Earth Observation and Remote Sensing Applications conference series since 2008, a National Director of American Society for Photogrammetry and Remote Sensing from 2007 to 2010, and a panelist of U.S. DOE’s Cool Roofs Roadmap and Strategy in 2010.
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