Search found 3 matches

by Maluminas
2020-02-07T11:30:39-07:00
Forum: Users
Topic: Resizing very large 16-bit TIFF messes up the grayscale.
Replies: 9
Views: 1782

Re: Resizing very large 16-bit TIFF messes up the grayscale.

I'm a stickler for accuracy, so I'd love to be able to process the data to end up with a reasonably accurate height map of the actual shape of Mars. I'll describe my purpose here, though I don't expect any help since this is not really related to ImageMagick! I want to 3D print a topologically accur...
by Maluminas
2020-02-06T21:33:18-07:00
Forum: Users
Topic: Resizing very large 16-bit TIFF messes up the grayscale.
Replies: 9
Views: 1782

Re: Resizing very large 16-bit TIFF messes up the grayscale.

Thanks everyone for the help! magick, your command worked almost perfectly, I just replaced -normalized with -contrast-stretch 0 to avoid losing data at the extremes. The result is exactly what I wanted. snibgo, your idea about some kind of DEM encoding is probably what is going on. The description ...
by Maluminas
2020-02-06T14:28:35-07:00
Forum: Users
Topic: Resizing very large 16-bit TIFF messes up the grayscale.
Replies: 9
Views: 1782

Resizing very large 16-bit TIFF messes up the grayscale.

Hi! I'm very new to ImageMagick so I'm posting this here, since it is way more likely to be user error than a bug. I tried ImageMagick because I need to resize a very large TIFF to a more manageable size, so I needed software that could do it without loading the whole thing into RAM. The TIFF in que...