align image-stack failure for one picture

[Ralph Peters]

Hello,

I am not sure who to contact, so you are the winner 😀. Would you please forward it to the proper person?

I am using align_image_stack to align 30 images (30 focus-bracket images of a single subject) before using enfuse to make a focus-stacked image.

align_imge_stack command example:
align_image_stack -m -a ais_out PC*.JPG

The problem is that ONE of the 30 align-image pics (the 16th one) is "zoomed" enough to be noticeable and so the enfuse result is BAD.

I am running LinuxMint 19.2 which is reasonably up-to-date. It has hugin-tools version 2018.0.0+dfsg-1 I have also tried a later version (hugin-tools version 2019) and the zooming problem is worse!

enfuse example:
enfuse --exposure-weight=0 --saturation-weight=0 --contrast-weight=1 --hard-mask -o align_ew0_sw0_cw1.tif ais_*.tif

BTW, have made many nice focus-stacked photos using these 2 tools.

If I remove that ONE bad (zoomed) image, the enfuse result is fine, The JPG corresponding to the bad aligned image looks OK -- not unusual in any way.

If you are interested, I can ship you the originals and the aligned images.

I can also ship .pto files from the alignment process.
From the .pto file for the standard run -- compare line fo PC300160.JPG (the "bad" one) with the files before and after. "v" is 63.9 for PC300160.JPG while ALL the others have a value of about ~59.98
...
i w4000 h3000 f0 v59.9159385847016 Ra=0 Rb=0 Rc=0 Rd=0 Re=0 Eev7.69097997354436 Er=0 Eb=0 r-6.97211502753211e-05 p0.01933032084434 y0.0181818666427305 TrX0 TrY0 TrZ0 Tpy0 Tpp0 j=0 a=0 b=0 c=0 d=0 e=0 g=0 t=0 Va=0 Vb=0 Vc=0 Vd=0 Vx=0 Vy=0 Vm5 n"PC300159.JPG"
#-hugin cropFactor=5.55555534362793
i w4000 h3000 f0 v63.8624234333041 Ra=0 Rb=0 Rc=0 Rd=0 Re=0 Eev7.69097997354436 Er=0 Eb=0 r-0.904833391929645 p0.640236385979141 y0.603443340595463 TrX0 TrY0 TrZ0 Tpy0 Tpp0 j=0 a=0 b=0 c=0 d=0 e=0 g=0 t=0 Va=0 Vb=0 Vc=0 Vd=0 Vx=0 Vy=0 Vm5 n"PC300160.JPG"
#-hugin cropFactor=5.55555534362793
i w4000 h3000 f0 v59.9884710906467 Ra=0 Rb=0 Rc=0 Rd=0 Re=0 Eev7.69097997354436 Er=0 Eb=0 r-0.00301238735060808 p0.0230943193223082 y-0.00201051199266536 TrX0 TrY0 TrZ0 Tpy0 Tpp0 j=0 a=0 b=0 c=0 d=0 e=0 g=0 t=0 Va=0 Vb=0 Vc=0 Vd=0 Vx=0 Vy=0 Vm5 n"PC300161.JPG"
#-hugin cropFactor=5.55555534362793
i w4000 h3000 f0 v60.0039586770008 Ra=0 Rb=0 Rc=0 Rd=0 Re=0 Eev7.69097997354436 Er=0 Eb=0 r-0.00149713470209829 p0.021408432119812 y-2.00031198317169e-05 TrX0 TrY0 TrZ0 Tpy0 Tpp0 j=0 a=0 b=0 c=0 d=0 e=0 g=0 t=0 Va=0 Vb=0 Vc=0 Vd=0 Vx=0 Vy=0 Vm5 n"PC300162.JPG"
#-hugin cropFactor=5.55555534362793
i w4

Thanks,
Ralph Peters

[T. Modes]

Hi,

Am Sonntag, 5. Januar 2020 00:17:46 UTC+1 schrieb Ralph Peters:

align_image_stack command example:

align_image_stack -m -a ais_out PC*.JPG

The problem is that ONE of the 30 align-image pics (the 16th one) is "zoomed" enough to be noticeable and so the enfuse result is BAD.

 If you explicit activate the optimization of the hfov (-m switch), it is not surprising that the fov changes, but without the images it is difficult to give further advices. (3-5 images would be enough, not all 30 are needed).

Thomas

PS:

I am running LinuxMint 19.2 which is reasonably up-to-date. It has hugin-tools version 2018.0.0+dfsg-1  I have also tried a later version (hugin-tools version 2019) and the zooming problem is worse!

Current version is 2019.2. There is no version 2019. But there was no changes to align_image_stack in the last versions. So this is a bit surprising.