headtracker / mag lens / macro lens (linaccess at yokoy.de)

linaccess at yokoy.de linaccess at yokoy.de
Thu Sep 6 16:01:46 EDT 2007

Hello Luke,

thanks for that appraisal.


On Thu, 6 Sep 2007 14:53:15 -0400
"Luke Hutchison" <luke.hutch at gmail.com> wrote:

> OpenCV looks much more heavyweight than what you need, but may be useful in
> prototyping.
> Phase correlation looks for the translational offset of an entire image
> between two frames.  It is also probably much more heaviweight than what you
> need.  In the end the result you get will be pretty similar to that obtained
> by the centroid method.  You will only get higher than single-pixel
> precision with phase correlation if you do subpixel extremum detection
> anyway, and you can do that directly in image space, saving a lot of
> computation.


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