高分二号卫星威尼斯真彩色合成影像
封面图片为高分二号卫星获取的意大利威尼斯的真彩色合成影像，展现了水上之城威尼斯“因水而生，因水而美，因水而兴”的地理风貌。高分二号卫星具有亚米级空间分辨率、高定位精度等特点，从卫星拍摄的影像中可以清晰地识别水路船舶的位置和轨迹。该影像来源于大规模遥感图像细粒度目标识别数据集（FAIR1M），该数据集具有 100 多万精细化标注、多角度分布的目标，场景覆盖全球上百个典型城市、乡镇以及常用机场、港口等，包含 37 类细粒度目标类别等优势，被遴选为 2021 年国际摄影测量与遥感协会（ISPRS）科学创新项目。FAIR1M 数据集已于 2021 年 4 月面向全球公开发布，可供从事地理信息、遥感测绘、人工智能等领域的专业人员研究使用。FAIR1M 数据集获取网址：http://gaofen-challenge.com/benchmark。
True color composite image of Venice by GF-2 satellite
The cover image is a true-color composite image of Venice, Italy, obtained by GF-2 satellite. It shows the geographical features of Venice,a city on the water, "born by water, beautiful by water, and prosperous by water". GF-2 satellite has the characteristics of sub-meter spatial resolution and high positioning accuracy. The position and trajectory of ships on the waterway can be clearly identified from the image.This image comes from the large-scale fine-grained object recognition dataset for remote sensing images (FAIR1M). FAIR1M has more than one million objects with refined tags and multiple angles. The scene covers hundreds of typical cities and towns around the world, as well as commonly used airports, ports, etc., and contains 37 fine-grained object categories. It was selected as the 2021 International Society for Photogrammetry and Remote Sensing (ISPRS) scientific initiatives project, and has been released to the world in April 2021. It can be used by professionals engaged in geographic information, remote sensing mapping, artificial intelligence and other related fields. (FAIR1M dataset acquisition: http://gaofen-challenge.com/benchmark)
