I am trying to process INSAT-3D images, which contains six different bands. I have to extract each and every band form the .h5 data file, so, when I extract first band (MIR) band form the data set, I found that my MIR band image size is (3062, 3207) which digital number ranges form 0 to 1023, while its radiance size is (1, 1024) which ranges form 0 to 0.3. Can anyone please tell me that how could I overlay these radiance values on to my image.
Hello Tasneem Ahmed,
I suppose that the values of the MIR image (3062,3207) refer to the radiance index (1,1024).
for example, if a pixel gives you a value of 1000 DN, the radiance value that you are looking for is the (0,1000) th value of the radiance index.
Just replace the DN numbers by their corresponding values in the radiance array.
I hope this has been helpfull,
Follow this link
http://rredc.nrel.gov/solar/spectra/am0/ASTM2000.html
and open the Excel file
E490_00a_AM0.xls
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