Files are too big after preprocess

Dear all,

Everytime I preprocess the images with calibration, terrain correction and filtering, the outputs are always too big.

The origin IW GRD images occupy about 800-900M, I save the outputs in ENVI format, they can be up to 15G. And the process is very slow.

Could anybody tell me why?



1 Like

Stick to the Beam DIMAP format. You can open it in other programs as well and it is comparably fast when it comes to reading and writing

Another reason for the increased file size: Original data is Integer, after calibration it is Float.

ABraun, Thank you very much!

It is much faster when output with DIMAP format