Orthophoto & DEM from drone images, UAV, Aldabra arm01, Seychelles - 20221020 - 02_5
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"This dataset presents the results of the photogrammetry process using images collected by an Unmanned Aerial Vehicle in Aldabra arm01, Seychelles, on 20221020 The processing was carried out with the OpenDroneMap software from the raw images provided in the first version of this DOI. Underwater or aerial images collected by scientists or citizens can have a wide variety of uses for science, ecosystems management, or conservation. These images can be annotated and shared to train IA models which can in turn predict the objects on such images. We provide a set of tools (hardware and software) to collect marine data, predict species or habitat, and provide maps. The parameters of the OpenDroneMap software are shared so that the proposed processes can be reproduced or improved: [ { 'name': 'orthophoto-resolution', 'value': 1 }, { 'name': 'auto-boundary', 'value': true }, { 'name': 'dem-resolution', 'value': '2.0' }, { 'name': 'dsm', 'value': true } ] The depot consists of the following elements: - 00_: Image preview panel - DCIM.zip: RAW images from UAV - GPS.zip: GIS file (Geopackage) containing the overflight area as well as the geolocation of the images accompanied by their thumbnails in the base64 attribute table. - METADATA.zip: Exif metadata in CSV format, OGC metadata in ISO19115 / 39 XML format, flight reports with thumbnails of drone images and flight statistics (html or pdf files), - PROCESSED_DATA.zip: Orthophoto, DEM, point cloud, ... Original tree structure: │ └─ 20221020_SYC-aldabra-arm01_UAV-02_5 │-------- └─ DCIM │-------- └─ GPS │-------- └─ METADATA │-------- └─ PROCESSED_DATA │-------- └─ MSP │---------------- └─ 0096 │---------------- └─ calibration Flight survey information: - Camera model and parameters: Make: Hasselblad Model: L1D-20c Width: 5472 Height: 3648 Focal: 28 WhiteBalance: Manual ExposureMode: Auto Exposure ColoSpace: sRGB EV: -0.7 MeteringMode: CenterWeightedAverage Camera Pitch: -75.00 - Survey informations: No Images: 154 Median height: 70 meters Survey area: 7.66 hectares Survey from: 2022:10:20 17:23:43 to: 2022:10:20 17:32:34 "
本数据集呈现了2022年10月20日在塞舌尔阿尔达布拉arm01区域,由无人机(Unmanned Aerial Vehicle, UAV)采集影像后开展摄影测量处理的成果。 本次处理基于本DOI首个版本提供的原始影像,采用OpenDroneMap软件完成。 科研人员或民众采集的水下与航空影像可广泛应用于科学研究、生态系统管理与物种保护领域。此类影像可经标注后共享,用于训练人工智能(Artificial Intelligence)模型,以实现影像内目标的识别预测。本数据集提供一套软硬件工具集,可用于海洋数据采集、物种/生境预测及地图制作。 本次使用的OpenDroneMap软件参数已公开,可复现或优化所提出的处理流程: [ { "参数名称": "正射影像分辨率(orthophoto-resolution)", "参数取值": 1 }, { "参数名称": "自动边界(auto-boundary)", "参数取值": 真 }, { "参数名称": "数字高程模型分辨率(dem-resolution)", "参数取值": "2.0" }, { "参数名称": "数字表面模型(dsm)", "参数取值": 真 } ] 本数据集存储内容如下: - 00_:影像预览面板 - DCIM.zip:无人机采集的原始影像 - GPS.zip:地理信息系统(Geographic Information System, GIS)文件(GeoPackage格式),包含飞行覆盖区域、影像地理定位信息,且属性表中以base64格式存储影像缩略图 - METADATA.zip:包含CSV格式的Exif元数据、符合ISO19115/39 XML标准的开放地理空间联盟(Open Geospatial Consortium, OGC)元数据,以及搭载无人机影像缩略图和飞行统计数据的飞行报告(HTML或PDF格式文件) - PROCESSED_DATA.zip:正射影像、数字高程模型(Digital Elevation Model, DEM)、点云数据等 原始目录结构: │ └─ 20221020_SYC-aldabra-arm01_UAV-02_5 │-------- └─ DCIM │-------- └─ GPS │-------- └─ METADATA │-------- └─ PROCESSED_DATA │-------- └─ MSP │---------------- └─ 0096 │---------------- └─ calibration 飞行测绘信息: - 相机型号与参数: 厂商:哈苏(Hasselblad) 型号:L1D-20c 宽度:5472 高度:3648 焦距:28 白平衡:手动 曝光模式:自动曝光 色彩空间:sRGB 曝光补偿:-0.7 测光模式:中央重点加权平均测光 相机俯仰角:-75.00° - 测绘信息: 影像总数:154张 飞行高度中位数:70米 测绘面积:7.66公顷 测绘时段:2022年10月20日17:23:43至2022年10月20日17:32:34



