RE: Nullify blue

Please,
   
  Can you explain to me why HSV space is better than RGB for this?
   
  Regards, 
   
  Luiz Reginaldo

Yoram Mizrachi <yorammizrachi@xxxxxxxxx> escreveu:
        v\:* {behavior:url(#default#VML);}  o\:* {behavior:url(#default#VML);}  
w\:* {behavior:url(#default#VML);}  .shape {behavior:url(#default#VML);}        
st1\:*{behavior:url(#default#ieooui) }                Thanks Dave,
   
  Helped me a lot, indeed HSV is much better for ?blues? identification 
   
  Cheers,
  Yoram
   
   
   
      
---------------------------------
  
  From: OpenCV@xxxxxxxxxxxxxxx [mailto:OpenCV@xxxxxxxxxxxxxxx] On Behalf Of 
Dave Grossman
Sent: Monday, January 23, 2006 9:42 PM
To: OpenCV@xxxxxxxxxxxxxxx
Subject: RE: [OpenCV] Nullify blue

   
  You should be working in HSV space, not BGR space.
   
    
---------------------------------
  
  From: OpenCV@xxxxxxxxxxxxxxx [mailto:OpenCV@xxxxxxxxxxxxxxx] On Behalf Of 
Yoram Mizrachi
Sent: Monday, January 23, 2006 7:24 AM
To: OpenCV@xxxxxxxxxxxxxxx
Subject: [OpenCV] Nullify blue
  Greetings,
   
  I need to translate all ?blue? variant in a picture into black (RGB=000). I?m 
working in BGR mode (the default) and was wondering what should be good values 
for each of the channels (R, G and B) to identify any variant of blue. 
  Does anyone aware of a formula or ?finger? numbers I can work with?
   
  For example:
  If (B > 200) && (R < 100) ?.
   
  Thanks in advance,
   
   
  Yoram Mizrachi
   
  


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