30米分辨率全球一张图(2019)

在海量Landsat 高精度正射影像的基础上，经过半自动的数据挑选、快速自动化镶嵌和匀色等关键技术，制作色彩一致性较高的30 米分辨率全球一张图。数据使用GeoTiff 格式保存，投影为WGS 84 经纬度。为方便用户使用，已进行分块，并内建金字塔。本数据包含全球60°S 到80°N 所有陆地区域影像（除格陵兰岛），每个Path/Row 选择生长季云量最少的一景，在云量较多的区域使用年度中值合成影像。本数据集几何精度高、色彩一致性好，可为遥感应用、虚拟现实等提供基础底图。

Based on a large corpus of high-precision orthorectified Landsat images, a global single mosaic with high color consistency and 30-meter resolution was produced via key technologies including semi-automatic data selection, rapid automated mosaicking and color balancing. The data is stored in GeoTIFF format, with the projection set to the WGS 84 geographic coordinate system. To facilitate user access, the data has been tiled and embedded with internal image pyramids. This dataset covers all terrestrial regions globally between 60°S and 80°N, excluding Greenland. For each Path/Row, the scene with the least cloud cover during the growing season is selected; for regions with significant cloud cover, annual median composite images are adopted. This dataset boasts high geometric accuracy and excellent color consistency, serving as a foundational base map for remote sensing applications, virtual reality and other related fields.

搜集汇总

背景与挑战

背景概述

该数据集是基于海量Landsat高精度正射影像制作的30米分辨率全球一张图，覆盖全球60°S到80°N的陆地区域（除格陵兰岛），使用GeoTiff格式和WGS 84经纬度投影。它经过半自动数据挑选、快速自动化镶嵌和匀色处理，具有高几何精度和良好的色彩一致性，旨在为遥感应用和虚拟现实提供基础底图。