Comments on: Magic moments http://www.mukimuki.fr/flashblog/2009/05/20/magic-moments/ The Actionscript Wrestler ! Tue, 12 Jul 2011 07:48:40 +0200 http://wordpress.org/?v=2.8 hourly 1 By: Niels Wolf http://www.mukimuki.fr/flashblog/2009/05/20/magic-moments/comment-page-1/#comment-847 Niels Wolf Tue, 10 Nov 2009 10:53:24 +0000 http://www.mukimuki.fr/flashblog/?p=155#comment-847 Hey Benjamin.. is there a way to tell, if the lookup shape is at all in the image with this method? I found that with real life pictures this method is always finding something in the image that seems to be likely to the lookup. Hey Benjamin..

is there a way to tell, if the lookup shape is at all in the image with this method? I found that with real life pictures this method is always finding something in the image that seems to be likely to the lookup.

]]> By: Benjamin http://www.mukimuki.fr/flashblog/2009/05/20/magic-moments/comment-page-1/#comment-49 Benjamin Thu, 18 Jun 2009 20:12:56 +0000 http://www.mukimuki.fr/flashblog/?p=155#comment-49 @Og2t: I did not do some benchmark between bytesarray and 2-D loops. If I remember what I have read it is better to use bytesarray for large bitmapdata, but otherwise the speed is not so different. But I have to check what I am saying, <a href="http://blog.joa-ebert.com/" rel="nofollow">Joa</a> wrote a nice <a href="http://http://blog.joa-ebert.com/2008/04/26/actionscript-3-optimization-techniques/" rel="nofollow">paper</a> about this topic ;) @Og2t:
I did not do some benchmark between bytesarray and 2-D loops. If I remember what I have read it is better to use bytesarray for large bitmapdata, but otherwise the speed is not so different. But I have to check what I am saying, Joa wrote a nice paper about this topic ;)

]]> By: Og2t http://www.mukimuki.fr/flashblog/2009/05/20/magic-moments/comment-page-1/#comment-46 Og2t Thu, 18 Jun 2009 11:15:43 +0000 http://www.mukimuki.fr/flashblog/?p=155#comment-46 Great blog and very interesting stuff here, I am gonna try that technique with blob detection. How about BitmapData.getPixels method to get all the pixels into the ByteArray (for speed)? Cheers, Tomek Great blog and very interesting stuff here, I am gonna try that technique with blob detection. How about BitmapData.getPixels method to get all the pixels into the ByteArray (for speed)? Cheers, Tomek

]]> By: Muki Muki » Camshift: Source and explanation http://www.mukimuki.fr/flashblog/2009/05/20/magic-moments/comment-page-1/#comment-45 Muki Muki » Camshift: Source and explanation Thu, 18 Jun 2009 08:32:07 +0000 http://www.mukimuki.fr/flashblog/?p=155#comment-45 [...] locating the maximum of density of the probabilities distribution, Camshift uses the 2nd order moment to retrieve the size and the orientation of the  distribution. Actually camshift is almost the [...] [...] locating the maximum of density of the probabilities distribution, Camshift uses the 2nd order moment to retrieve the size and the orientation of the  distribution. Actually camshift is almost the [...]

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