Image align stack each set of exposure.
Images are big 16-bit tiffs need to be done from the command line on a machine with more ram than mine. I think I'm doing as you instructed?
Stitch together one image from each exposure stack into a panorama (e.g. the middle exposures). Thus the others in the stack will also be aligned.
It sounds like you're proposing something different to the highlighted part of my workflow which could solve my problem but I'm not following you quite yet! Can you explain in more detail?360.net...Beautiful! You're getting solid alignment. It is far better aligned than what I'm seeing.
Then I would export each exposure separately (light, mid, and dark), finally enfusing them.
I feel a bit misled by hugin documentation suggesting that the any-arrangement direction would work: http://hugin.sourceforge.net/docs/manual/Hugin_Stitcher_tab.html.
Sorry, but this is not helpful - for nobody.
What does not work?
what does you expect to happen
2) After setting up lenses, cropping, and masks, I would align each exposure stack, e.g. First align the images taken at position 1 and at -3EV 0EV +3EV with each other. Then align images taken at position 2 and at -3EV 0EV +3EV, etc. This produces control points that should make sure all the different exposures line up.3) Now I would then generate control points between images taken at the same exposure, e.g. align all the 0EV images, and then optimise to produce a panorama. The other exposure images will now also be aligned by proxy since they were aligned with the 0EV images in the previous step.
Two things:- vertical panorama not getting placed in the canvas well
- move/drag causes panos 1, 2, and 3 to not align well in align_image_stack
At what step would Hugin account for such discrepancy caused by different move/drag on the three different panos?
What is being proposed: make stacks, even though images were not taken as stacks per flow diagram above. Like this, repeated for all the "stacks":
Then I have two options:
a) exposure fusion from any arrangement (as if moving from ais images, DOWN)
b) exposure fused from stacks (as if moving from ais images to RIGHT)
The problem with this approach is that align_image_stack cannot identify control points for the image DSC_8625.tif which match with the rest of the "stack" (DSC_8632.tif, DSC_8633.tif, DSC_8625.tif). I had originally intended this fusion to happen via any arrangement. I didn't think that individual images had to be ligned up.
I've tried playing with the parameters of align_image_stack but it's not able to make control points DSC_8625.tif no matter what I use. E.g.
align_image_stack -v -d -i -x -y -z -C --use-given-order -g 40 -a ais ../DSC_8633.tif ........
I suspect that DSC_8625.tif does not lign up because the image is translated too much.
T. Modes, have I interpret the exposure fused from any arrangement workflow wrong? How would this problem be dealt with?