[BBC-Micro] Reversing the Tube ULA (destructively)

Theo Markettos list-a_cloud9.bbc-micro at chiark.greenend.org.uk
Sat Oct 30 23:15:13 BST 2010


> On 30 October 2010 16:26, Christian Sattler <sattler.christian at gmail.com> wrote:
> > My tools are based on autopano SIFT
> > (http://en.wikipedia.org/wiki/Scale-invariant_feature_transform) for finding
> > many control points between the images (around 10^5 for 100 images). A
> > substantial part of those will be very wrong, so I filter them using
> > statistical methods, which also estimate image positions and optical
> > distortion parameters along the way. Some notes you should consider before
> > shooting:

I've just ebayed myself a slightly-broken 5MP Canon A550, which will run
CHDK so I can get RAW and manual focus and I can mess with the optics if
necessary (usually shooting down the eyepiece using the camera lenses is
easiest, though, rather than the microscope's camera port).  Sergei has some
XYZ vernier stages, so I'll see if I can mount in that so the positioning is
accurate.

If you decap, can you try to keep the legs intact?  That means it'll mount
reliably in a ZIF socket to keep things planar (focus will go fairly soon if
it isn't, so it should be easy to tell)

Theo



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