AUTHOR=Du Jinze , Huang Meiqin , Kang Zhenjun , Tian Yichao , Tao Jin , Zhang Qiang , Xie Yutong , Mo Jinying , Huang LiYan , Feng Yusheng TITLE=Extraction of typical oyster pile columns in the Maowei Sea, Beibu Gulf, based on unmanned aerial vehicle laser point cloud orthophotos JOURNAL=Frontiers in Marine Science VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2025.1502123 DOI=10.3389/fmars.2025.1502123 ISSN=2296-7745