How can i detect circle in a eye image? Mainly the iris region.

2013 6 6
3 个回答
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更新时间：2019 9 19
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0 个投票

I am working on iris recognition algorithms. I want to know how can i localize the iris region in a eye image.

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 采纳的回答

Alex Taylor
Alex Taylor 2013-6-6

0 个投票

You should start with imfindcircles and see if that works:
http://www.mathworks.com/help/images/ref/imfindcircles.html

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Alex Taylor
Alex Taylor 2013-6-6
Yes, I was answering a more generic "how should I start with a circle detection problem?" question. I would also suggest looking at the literature to find specific algorithms that are well suited to iris detection.
Umme Tania
Umme Tania 2013-6-6
I tried this one.... A = imread('coins.png'); imshow(A); [centers, radii, metric] = imfindcircles(A,[15 30]); centersStrong5 = centers(1:5,:); radiiStrong5 = radii(1:5); metricStrong5 = metric(1:5); viscircles(centersStrong5, radiiStrong5,'EdgeColor','b'); But it shows the error ...Undefined function or method 'imfindcircles' for input arguments of type 'uint8'.
Image Analyst
Image Analyst 2013-6-6
编辑：Image Analyst 2013-6-6
Then why did you "Accept" the answer if you didn't get it to work? You must have an old version of MATLAB. Please upgrade to the latest version.
Umme Tania
Umme Tania 2013-6-9
Sorry, i am new here...i thought if i am going to comment, i need to press accept .
Nitin
Nitin 2013-6-18
编辑：Nitin 2013-6-18
Check out Libor Masek, MATLAB Source Code for a Biometric Identification System Based on Iris Patterns., it's a good place to start. It basically uses Canny Edge Detection followed by Hough Transform to detect the iris.
http://www.csse.uwa.edu.au/~pk/studentprojects/libor/sourcecode.html
Umme Tania
Umme Tania 2013-6-19
Thanks .........that's a huge help
om sharma
om sharma 2016-5-3
there is only .p files no code..... kindly send me the code
niroz gadgoud
niroz gadgoud 2019-9-19
plz can you send me the code at niroz.ng96@gmail.com

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更多回答（2 个）

Image Analyst
Image Analyst 2013-6-6

1 个投票

In your research on the extensive literature on this subject, which algorithm are you using? Show us your MATLAB code. We don't have time to research the literature for you and decide on an algorithm for you. There is lots out there on this subject and you are the one who needs to come up with the method.
Syed Zain Nasir
Syed Zain Nasir 2017-5-25

0 个投票

You should also have a look at this article Eye Ball Detection in MATLAB , they have explained in detail. I think it will help you out.

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Image Analyst
Image Analyst 2017-5-25
I couldn't. Anivirus says:
Dangerous Website Blocked
You attempted to access:
https://www.theengineeringprojects.com/2017/03/eye-ball-detection-matlab.html
This is a known dangerous website. It is recommended that you do NOT visit this site. The detailed report explains the security risks on this site.
For your protection, this web page has been blocked. Visit Symantec to learn more about phishing and internet security.

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