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From: ImageAnalyst on 3 Dec 2009 11:28
On Dec 3, 10:35 am, "wilson " <wilson_silver3...(a)hotmail.com> wrote:
> ImageAnalyst i got some difficulties problem now! Need some info from you!
> Now how am i gonna extract my iris become like this linkhttp://www.merl.com/projects/images/irisrecognition.jpg
> Make 2 circle on the iris how can i do it i had no idea on that can u teach me?
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I suggest you use the Hough transform as in this demo:
http://hci.iwr.uni-heidelberg.de/mip_teaching/ip/solution06/solution6.html
From: wilson on 3 Dec 2009 12:31
Thanks ImageAnalyst i will try to work out of it! U do help me a lots!
Thanks for the hints Cheers!
From: wilson on 3 Dec 2009 12:39
ImageAnalyst i still cant manage to crop out the rectangle from the target eye!
croppedImage = fullImage(x,y); i try using this to crop it but it come out error how can i do to crop it out automatically?
From: ImageAnalyst on 3 Dec 2009 13:10
On Dec 3, 12:39 pm, "wilson " <wilson_silver3...(a)hotmail.com> wrote:
> ImageAnalyst i still cant manage to crop out the rectangle from the target eye!
> croppedImage = fullImage(x,y); i try using this to crop it but it come out error how can i do to crop it out automatically?
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That doesn't crop - that just takes the value of the single pixel at
location (x,y) and assigns it to croppedImage (which isn't actually an
image - it's just a pixel value). It should not have generated an
error though.
Do something like this (like I told boy boy in that other thread that
you said you were going to look at):

croppedImage = fullImage(row1:row2, column1:column2);

Of course you need to figure out what row1, row2, column1, and column2
are based on your algorithm.
From: wilson on 3 Dec 2009 17:30
ImageAnalyst From the code above what is the figure number for row1, row2, col1 and col 2. still error i dunno why! Perhaps i put wrong figure!
croppedImage = fullImage(row1:row2, column1:column2);
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