[ptx] hugin and enblend?

[Rob Park]

Jean-Luc Coulon (f5ibh) wrote:
> What is you workflow ?
> 
> I use autopano to creates the contrl points
> Hugin for optimisation and stitching.
> If you plan to use enblend (recommended) you must save your picture as  
> multi-tiff
> Then feed these multi-tiff pictures in enblend and you are done.

I had bad results with autopano, so I make the control points myself in
hugin. Then I optomise it, and output to jpeg. The thing is, when I was
comparing the results of just using hugin to hugin+enblend, I ended up
with a 2MB JPEG file and a 90MB tiff file of the same scene, and they
looked pretty much identical (i was not able to find any differences,
aside from the size/format of the files).

Yes, when I used enblend, I output to multiple tiffs and then ran
enblend on them, the tiff it made looked the same as the JPEG straight
from hugin.

> from 11 pictures, field of view about 220 degrees:
> http://perso.wanadoo.fr/jean-luc.coulon/pictures/seythenex.jpg
> 
> from 6 pictures, field of view about 270 degrees:
> http://perso.wanadoo.fr/jean-luc.coulon/pictures/aravis.jpg
> 
> from 3 pictures, field of view about 170 degrees
> http://perso.wanadoo.fr/jean-luc.coulon/pictures/metabief.jpeg

Very nice.

Here is some of my stuff:

from 12 pictures, FOV 360 degrees (using a wide angle lens):
http://rbpark.ath.cx/pictures/badpano/college0.jpg
this one was the worst... I had to crop so much off the top and bottom
to make it look good. particularly the red post, just couldn't get that
to line up at all, and the sky is awful. the sky looked the same
regardless of whether I used enblend or not, though this image is
without enblend. Don't worry about the guy sitting in the bottom right
of the picture, he moved and he got chopped in half (lying down in one
shot, sitting up in the next), so I am not faulting hugin for his
mutilation. But there are a lot of other errors.

from 32 pictures, FOV 360 degrees (using a telephoto lens):
http://rbpark.ath.cx/pictures/badpano/college1.jpg
Not sure what the hell is going on in the left 90 degrees or so, the sun
started setting while I took the last few pictures, so I turned on
brightness correction, which made that even worse. I'm also not sure why
all those buildings are sheared so badly, the pictures weren't that bad.
The first version of this panorama had a HUGE bow in the horizon, I
added some horizontal guidelines to straighten it out, and it worked for
most of the picture, but I just can't get those buildings straight. I
had horizontal guidelines on every image, and that gave me small breaks
in the horizon, so I started deleting the horizontal guidelines from the
problem areas and it turned into that. I've been fiddling with it for
hours and I just cannot get it to be fixed. Otherwise, this panorama was
much better, except for some small stitch lines in the sky.

After some skillfull cropping, those two awful panoramas turned into
these two good panoramas:

http://rbpark.ath.cx/pictures/pano/college0.jpg
http://rbpark.ath.cx/pictures/pano/college1.jpg

And here is what I got when I first tried to use autopano:

http://rbpark.ath.cx/pictures/badpano/autopano.jpg

That is just silly.

Thanks in advance for any advice you can give me.