安徽省铜陵市2008年0.072米分辨率真彩色DMC航摄影像数据集

分辨率：0.072 m（约7 cm），真彩色（RGB三波段）。
成像年份：2008年；时相集中在4–5月（无云、植被返青前）。
幅宽与像元：单张影像约5 000 × 7 000像素，单像素物理尺寸7 cm。
坐标系：1980西安坐标系，高斯–克吕格3°带（中央经线117° E），1985国家高程基准。
覆盖范围：铜陵市全部市域约1 108 km²，共1 286条航线，8 450张原始像片，最终镶嵌为12景Tiled TIFF。
数据量：原始RAW 1.2 TB，正射镶嵌后压缩至268 GB（LZW+TIFF）。

Resolution: 0.072 meters (approximately 7 cm), true-color (RGB three bands).
Imaging year: 2008; the imaging period is concentrated in April–May (cloud-free, prior to vegetation green-up).
Swath width and pixel specifications: Each individual aerial image contains approximately 5,000 × 7,000 pixels, with a physical pixel size of 7 cm.
Coordinate system: 1980 Xi'an Geodetic Coordinate System, Gauss-Krüger 3° projection zone (central meridian: 117° E), 1985 National Height Datum.
Coverage: The entire municipal administrative region of Tongling City spans approximately 1,108 km², with a total of 1,286 flight lines and 8,450 original aerial photographs, which are ultimately mosaicked into 12 tiled TIFF datasets.
Data volume: The original RAW data amounts to 1.2 TB; after orthorectification and mosaicking, the data is compressed to 268 GB (LZW compression + TIFF).

搜集汇总

背景与挑战

背景概述

该数据集是2008年采集的安徽省铜陵市高分辨率航摄影像，分辨率达0.072米，覆盖全市1,108平方公里，提供真彩色图像。它具有历史数据价值，适用于城市规划、地质灾害评估和生态环境监测等多个领域，数据量原始为1.2 TB，处理后为268 GB。