[libcvd-members] FAST corner detection.

[Edward Rosten]

I've committed the cleaned up FAST corner detection code in to the library 
under the FAST_cleanup branch. It will cause minor breakage, so I  haven't 
put it in the main branch, but I'd like to merge it in as soon possible. 
If you want to start using it before I merge it in ot the main CVS branch, 
then you can get it using:

cvs up -r FAST_cleanup




Here's the details:


faster_corner_detect_* has gone: the build system chooses which detector 
(SSE2 or plain C++) to use. I improved the testing a while back, so this 
should be OK.



Faster scoring* for all detectors has been added. The old functions have 
been removed.

   *scoring defined as "highest threshold at which point is detected as a
   corner"



standalone nonmaximal suppression functions have been added:
nonmax_suppression, nonmax_suppresson_with_scores
in nonmax_suppression.h


A convenience function:
fast_corner_detec_9_nonmax()
has been added. This uses the scoring system defined above.


The old style scoring is still present in the fsat_nonmax family of 
functions as before.


-Ed