Hmm, I remember ages ago producing a 768MB panorama. Not a gigapixel
size image, of course. But I did it from the command line on a 32-bit
processor with 2GB RAM, starting with using cpfind on full-size 6mpx
images. Just running cpfind on a single image used 2GB RAM.
That just puts things in perspective. It took that little old laptop
about 8 hours to stitch the final panorama. That was using enblend back
then, of course. So apparently Linux was transparently managing memory
behind the scene.
I understand Photoshop does its own memory management, but it dates back
to the days when it ran under OSes that had no real memory management.
So why does an app like multiblend need to do its own memory management?
On 2/11/21 9:21 AM, Monkey wrote:
Output images that are bigger than RAM will be supported (on x64, at
least; making the same available on x86 would be a /lot /more work).
Input images that are bigger than RAM are not currently supported, but
I'll see about adding that (if anyone's going to try blending gigapixel
images together). It's done with plain memory mapped files rather than
tiles.
On Thursday, 11 February 2021 at 18:39:34 UTC [email protected] wrote:
gimp-like memory management that allows to handle target images that
are bigger than the RAM. don't know if it is already implemented.
The gimp splits big images into tiles that small enough so a few of
them fit into the RAM and then tries to work on these tiles one at a
time.
On 11.02.21 18:33, Monkey wrote:
It's been several years but I'm working on a new version of
Multiblend that's a bit faster, produces much nicer results, and
will blend much bigger mosaics.
Does anyone have any feature requests for a blender that I could
consider incorporating?
Along the same lines, does anyone use Enblend's colour space
features? Do they produce notably more "correct" results, or just
different ones? I've added an approximately linear RGB mode to
Multiblend, but it doesn't seem to produce great results so I'll
only be leaving it there as a curiosity.
--
David W. Jones
[email protected]
wandering the landscape of god
http://dancingtreefrog.com
My password is the last 8 digits of π.
--
A list of frequently asked questions is available at:
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