The paper "UAV for 3D mapping applications: a review" by Francesco Nex and Fabio Remondino provides an overview of the current state of UAV (Unmanned Aerial Vehicle) technology in geomatics applications. UAVs, which can be rotary or fixed-wing, are increasingly used for inspection, surveillance, mapping, and 3D modeling due to their low cost compared to traditional manned aerial photogrammetry. The paper discusses the different types of UAV platforms, their applications, and case studies, highlighting the latest advancements in UAV image processing. It also addresses the challenges and limitations, such as regulatory issues and data processing, and outlines the photogrammetric workflow for producing 3D results like digital surface models, terrain models, and textured 3D models. The authors emphasize the importance of UAVs in various fields, including archaeology, agriculture, emergency response, and urban planning, and discuss the ongoing developments in hardware and platform technologies to enhance their capabilities.The paper "UAV for 3D mapping applications: a review" by Francesco Nex and Fabio Remondino provides an overview of the current state of UAV (Unmanned Aerial Vehicle) technology in geomatics applications. UAVs, which can be rotary or fixed-wing, are increasingly used for inspection, surveillance, mapping, and 3D modeling due to their low cost compared to traditional manned aerial photogrammetry. The paper discusses the different types of UAV platforms, their applications, and case studies, highlighting the latest advancements in UAV image processing. It also addresses the challenges and limitations, such as regulatory issues and data processing, and outlines the photogrammetric workflow for producing 3D results like digital surface models, terrain models, and textured 3D models. The authors emphasize the importance of UAVs in various fields, including archaeology, agriculture, emergency response, and urban planning, and discuss the ongoing developments in hardware and platform technologies to enhance their capabilities.