On Fri 20-Apr-2012 at 16:23 +0100, Bruno Postle wrote:
I mean to experiment with more real data and see what problems
there are, hence this ptomorph script.
It currently uses a 'Shepards' distort, which forces each point to
fit exactly. Though ImageMagick also has a polynomial distort
where it applies a 'best fit' average. This looks promising since
you can pick the order of the polynomial, and it will apply a
distortion overall, just using the control points as a guide
rather than requiring an exact fit.
OK, I implemented a ptomorph --polynomial option, you can choose a
polynomial order between 1 and 5:
http://www.flickr.com/photos/36383814@N00/6951181084
http://www.flickr.com/photos/36383814@N00/6951183554
http://www.flickr.com/photos/36383814@N00/7097254813
http://www.flickr.com/photos/36383814@N00/7097256599
http://www.flickr.com/photos/36383814@N00/7097258147
It looks like 1 and 2 will be useful, and these should be quite
robust in a project with 'bad' control points, unlike the default
'Shepards' distort.
3, 4 and 5 order polynomials clearly need a good spread of control
points or they get a bit weird ;-)
--
Bruno
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