How do I calculate the DN value from the GeoTIFF image using

[kishorehyd199]

How do I calculate the DN value from the GeoTIFF image using Python libraries only?

Will I get multiple pixels in this process?

I could have opened the image in SNAP/QGIS and gone to the respective coordinates using mouse and noted down the DN value.

But, I have around 60 images and I'll get more. I'd like to automate this process.

I have found some relevant libraries:

*Raster IO
*Affine
*GDAL

I am not a tech guy.

[kathys]

Can you provide us with a little more information? What GeoTIFF image you are referring to? Is it a file created using Polar2Grid?

Kathy