Radiometric correction of satellite images using QGIS

Radiometric correction of satellite images using QGIS SCP

Landsat Collections Level-1 data can be rescaled to top of atmosphere (TOA) reflectance and/or radiance using radiometric rescaling coefficients provided in the metadata file (MTL file) that is delivered with the Level-1 product. The metadata file (MTL file) also contains the thermal constants (K1 and K2) needed to convert thermal band data to TOA brightness temperature. Formulas for these conversions are provided by NASA. Learn more... about Formulas. 

1. Conversion to TOA Radiance: Landsat Level-1 data can be converted to TOA spectral radiance using the radiance rescaling factors in the MTL file. 

2. Conversion to TOA Reflectance: Reflective band DN’s can be converted to TOA reflectance using the rescaling coefficients in the MTL file. 

3. Conversion to Top of Atmosphere Brightness Temperature: Thermal band data can be converted from spectral radiance to top of atmosphere brightness temperature using the thermal constants in the MTL file. 

4. Atmospheric Correction (DOS1). 
In this course I will show you how to correct satellite images quickly by using the Semi-Automatic Classification Plugin (SCP). 

Follow the video to convert pixel values (DN) to reflectance.

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