Convert hyperspectral image between .mat and .tif format

If I have image that consists of hundreds of bands in .mat format, how can I convert it to .tif format with the same number of bands without data loss (, which can be analyzed with remote sensing software later on)? (e.g. PaviaU with 103 bands)

Vice versa, how can I convert the image in .tif format (,possibly product from remote sensing software,) to .mat format with the same number of bands without data loss for further process in MATLAB?

Thank you!

Answer 1

[Walter Roberson]

Generally speaking you would use the TIFF Class https://www.mathworks.com/help/matlab/ref/tiff-class.html for this work. But TIFF can represent multiple bands in different ways so you need to know which of the ways is expected by the other software.

You could also consider using imwrite() with 'WriteMode', 'append'

[Bi]

Would it be possible to illustrate them with code example? I may not be familiar with the classes suggested.

[Walter Roberson]

https://www.mathworks.com/help/matlab/import_export/importing-images.html#br_c8to-1 for code that deals with reading TIFF files that have subimages.

If you do not have subimages, then supposing you have an array Image103 that is something by something by 103, then

nband = size(Image103, 3);
for K = 1 : nband
   if K == 1
     imwrite(Image103(:,:,K), 'Image103.tif');
   else
     imwrite(Image103(:,:,K), 'Image103.tif', 'WriteMode', 'append');
   end
 end