Hi James,
Depending on the distance between object and x-ray source there will be
some amount of parallax. It might be a good idea to put all control
points on the actual pcb (preferably even the same side of the pcb) and
not the components.
Apart from that, as Bruno is saying, this is well within scope and 45 is
not a very large number.
cheers, lukas wirz
On 21/12/2023 17:11, James C. Williams wrote:
My current project is learning to use Hugin to create complete pictures of
circuit boards from x-rays to be used for troubleshooting/repairs. I have
obstacles.
The first obstacle has to do with the fact that I have the latest version
of Hugin for Windows, but the tutorials are over 10 years old. Is anybody
working to update the tutorials? If so, I might be able to help.
The second obstacle is that the x-ray image files have no EXIF data, so
control points must be hand selected for every image.
The third obstacle is that my circuit board is approximately 3" x 17", and
the x-ray captures an area 1 1/4" x 7/8", so the whole thing takes about 45
images, (three rows of 15) allowing for overlap. I had to stitch segments
made up of no more than 5 images at a time, hand-generating control points
and using Advanced - Fast Panorama Preview for Move/Drag, Straighten to
remove distortion.
The fourth and current obstacle has to do with stitching together my
stitched segments.
The workflow is horizontally oriented, thus prompting my first question:
1) Does the tutorial give any relevant details on stitching vertically?
Another current issue is that I tried stitching the first two segments, and
my first segment image appears in the field about 1/3 the size of the 2nd
segment. They are the same length, but different heights.
2) Why is one image appearing smaller than the other?
The main concern is that this job may be too big for Hugin. I have spent a
lot of time on this and need it to work. If it does, I need to fine-tune my
work-flow to be able to do the same on other circuit boards. If I need to
be using something else, please let me know (gently!).
Any help towards these obstacles would be very much appreciated.
--
A list of frequently asked questions is available at:
http://wiki.panotools.org/Hugin_FAQ
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