I am working with Landsat 8 in ENVI. My image's dimensions are 8921 x 13131. I need to apply a forest mask to this image with dimensions of 8805 x 12321. I try to resize an image, but it doesn't work. (After that I need to calculate forest disturbance index for 2013 and subtract it from DI for 2000, so I really need an 2013 image (Landsat 8) to be resized).
I resize it using basic tool - spatial subset - subset using - file - and then pick my forest mask. However, as a result I get a file of 8806 x 12321 instead of 8805. If I adjust the number of samples manually, it gives me 8805. But then I try to apply a mask and that's what I get (see a screenshot). They just don't match. And when I try to overlay my mask (which I made based on Landsat 7 image) with my Landsat 8 image, those two images have different frames.
Does anybody have any good advice?