TM mosaic image of Heihe River basin can be effectively used for monitoring land use change in the basin, reflecting the current situation of Heihe River Basin in 2010, and providing reliable basis for ecological planning and ecological restoration.
The mosaic collects the TM images of 2010 released by USGS free of charge (from July to September 2010, a total of 21 scenes, and the maximum cloud amount of data is no more than 10%). Through the topographic map, geometric registration (polynomial geometric correction method) is carried out for the preprocessed images, and the digital mosaic map after geometric correction is generated. After a certain accuracy evaluation, the quality of the map is high.
The format of image storage is the IMG format of ERDAS. The most abundant 5, 4 and 3-band combination with red, green and blue colors is selected to generate color composite image. The composite image is not only similar to the natural color, but also more symbolic of people's visual habits. Due to the rich information, it can fully display the differences of image features of various features.
|collect time||2010/07/01 - 2010/09/30|
|data size||498.7 MB|
|Data spatial resolution (/ M)||27.0m|
2010 TM image released free of charge by USGS (from July to September 2010, 21 scenes in total, with the maximum cloud amount not exceeding 10%)
Geometric registration (polynomial geometric correction method)
After a certain accuracy evaluation, the quality of the drawing is high
©Copyright 2005-2020. Northwest Institute of Eco-Environment and Resources, CAS.
Donggang West Road 320, Lanzhou, Gansu, China (730000)