User:Nrp/Weekly updates/20080705: Difference between revisions

Latest revision as of 00:09, 7 July 2008

Started writing a connected components function using decision trees and array based union-find. As far as I can tell, this is the current state of the art in connected component algorithms.

Finished the connected components function and tested it. It still needs more testing, and I have to come up with a way of tracking the number of pixels in each connected component without needing another pass of the array. Then I can plug it into pygame.mask

By some miracle, changing the function to get the largest connected component actually worked on the first try. Now its just a matter of integrating it with masks and seeing if it'll run at a usable speed on the XO.

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 == Saturday ==
 * Researched connected components extraction
+== Monday ==
+* Continued connected components research
+== Tuesday ==
+* Started writing a connected components function using decision trees and array based union-find.  As far as I can tell, this is the current state of the art in connected component algorithms.
+== Wednesday ==
+* Finished the connected components function and tested it.  It still needs more testing, and I have to come up with a way of tracking the number of pixels in each connected component without needing another pass of the array.  Then I can plug it into pygame.mask
+== Thursday ==
+* By some miracle, changing the function to get the largest connected component actually worked on the first try.  Now its just a matter of integrating it with masks and seeing if it'll run at a usable speed on the XO.
+== Friday ==
+* Integrated largest connected component function into pygame.