Thread Subject: etxtract feature from iris

How can i extract feature from Iris using matlab code
?

On Aug 24, 5:26=A0am, "Mazen " <glab...@hotmail.com> wrote:
> How can i extract feature from Iris using matlab code
> ?
---------------------------------------------------------------------------=
-------------
Mazen:
1. Search the literature and web for scientific articles on the
subject.
2. Buy the Image Processing Toolkit for MATLAB.
3. Learn MATLAB, perhaps even taking the Image Processing course.
4. Try to program up something yourself based on what you learned.
5. If you need help, try posting an image somewhere that is publicly
accessible and post some code for what you've tried, both here and in
sci.image.processing.
Regards,
ImageAnalyst

ImageAnalyst <imageanalyst@mailinator.com> wrote in message
<4c6df55d-6066-40e1-8406-
19c289cf962e@26g2000hsk.googlegroups.com>...
> On Aug 24, 5:26=A0am, "Mazen " <glab...@hotmail.com>
wrote:
> > How can i extract feature from Iris using matlab code
> > ?
> ----------------------------------------------------------
-----------------=
> -------------
> Mazen:
> 1. Search the literature and web for scientific articles
on the
> subject.
> 2. Buy the Image Processing Toolkit for MATLAB.
> 3. Learn MATLAB, perhaps even taking the Image Processing
course.
> 4. Try to program up something yourself based on what you
learned.
> 5. If you need help, try posting an image somewhere that
is publicly
> accessible and post some code for what you've tried, both
here and in
> sci.image.processing.
> Regards,
> ImageAnalyst
Dear ImageAnalyst,

thx 4 ur replay

i work on image at following link
http://www.4shared.com/account/file/60256182/10c37b46/cc_onl
ine.html


i tray to extract irisr from image
so i wrote following code



I=imread('cc.tiff');
I2=rgb2gray(I);
h=ones(3,3);

I3=imfilter(I2,h);
 I4=medfilt2(I3,[3 3]);
 imshow(I4);
 

but i didnt get wht i need,do u help me to extract iris
fron this image

Regards

Mazen

On Aug 24, 9:11=A0am, "Mazen " <glab...@hotmail.com> wrote:
> ImageAnalyst <imageanal...@mailinator.com> wrote in message
>
> <4c6df55d-6066-40e1-8406-
> 19c289cf9...@26g2000hsk.googlegroups.com>...
>
>
>
> > On Aug 24, 5:26=3DA0am, "Mazen " <glab...@hotmail.com>
> wrote:
> > > How can i extract feature from Iris using matlab code
> > > ?
> > ----------------------------------------------------------
> -----------------=3D
> > -------------
> > Mazen:
> > 1. Search the literature and web for scientific articles
> on the
> > subject.
> > 2. Buy the Image Processing Toolkit for MATLAB.
> > 3. Learn MATLAB, perhaps even taking the Image Processing
> course.
> > 4. Try to program up something yourself based on what you
> learned.
> > 5. If you need help, try posting an image somewhere that
> is publicly
> > accessible and post some code for what you've tried, both
> here and in
> > sci.image.processing.
> > Regards,
> > ImageAnalyst
>
> Dear ImageAnalyst,
>
> thx 4 ur replay
>
> i work on image at following linkhttp://www.4shared.com/account/file/6025=
6182/10c37b46/cc_onl
> ine.html
>
> i tray to extract irisr from image
> so i wrote following code
>
> I=3Dimread('cc.tiff');
> I2=3Drgb2gray(I);
> h=3Dones(3,3);
>
> I3=3Dimfilter(I2,h);
> =A0I4=3Dmedfilt2(I3,[3 3]);
> =A0imshow(I4);
>
> but i didnt get wht i need,do u help me to extract iris
> fron this image
>
> Regards
>
> Mazen- Hide quoted text -
>
> - Show quoted text -
---------------------------------------------------------------------------=
----------------------------------
Mazen:
I was unable to view it. It wouldn't display the image. It would
only let me download it. However when I went to download the file it
just brought up a screenful of random characters. I suggest you try
another photo-sharing web site. This one seems to make it difficult
for us to view your images.

All your code does it blur the image and then median filter it (which
is pretty much useless after you've already blurred it). You need to
get to some point where you can threshold an image and then call
bwlabel() and regionprops().

Regards,
ImageAnalyst

Dear ImageAnalyst,

i upload image to u at the following link

http://www.zshare.net/image/17572827908a9474/

i wanna extract iris from above image

thx 4 ur help

Regards,
Mazen


ImageAnalyst <imageanalyst@mailinator.com> wrote in message
<f741b5cc-dfed-469c-8eef-
4f0c760691d0@t54g2000hsg.googlegroups.com>...
> On Aug 24, 9:11=A0am, "Mazen " <glab...@hotmail.com>
wrote:
> > ImageAnalyst <imageanal...@mailinator.com> wrote in
message
> >
> > <4c6df55d-6066-40e1-8406-
> > 19c289cf9...@26g2000hsk.googlegroups.com>...
> >
> >
> >
> > > On Aug 24, 5:26=3DA0am, "Mazen " <glab...@hotmail.com>
> > wrote:
> > > > How can i extract feature from Iris using matlab
code
> > > > ?
> > > ------------------------------------------------------
----
> > -----------------=3D
> > > -------------
> > > Mazen:
> > > 1. Search the literature and web for scientific
articles
> > on the
> > > subject.
> > > 2. Buy the Image Processing Toolkit for MATLAB.
> > > 3. Learn MATLAB, perhaps even taking the Image
Processing
> > course.
> > > 4. Try to program up something yourself based on what
you
> > learned.
> > > 5. If you need help, try posting an image somewhere
that
> > is publicly
> > > accessible and post some code for what you've tried,
both
> > here and in
> > > sci.image.processing.
> > > Regards,
> > > ImageAnalyst
> >
> > Dear ImageAnalyst,
> >
> > thx 4 ur replay
> >
> > i work on image at following
linkhttp://www.4shared.com/account/file/6025=
> 6182/10c37b46/cc_onl
> > ine.html
> >
> > i tray to extract irisr from image
> > so i wrote following code
> >
> > I=3Dimread('cc.tiff');
> > I2=3Drgb2gray(I);
> > h=3Dones(3,3);
> >
> > I3=3Dimfilter(I2,h);
> > =A0I4=3Dmedfilt2(I3,[3 3]);
> > =A0imshow(I4);
> >
> > but i didnt get wht i need,do u help me to extract iris
> > fron this image
> >
> > Regards
> >
> > Mazen- Hide quoted text -
> >
> > - Show quoted text -
> ----------------------------------------------------------
-----------------=
> ----------------------------------
> Mazen:
> I was unable to view it. It wouldn't display the image.
It would
> only let me download it. However when I went to download
the file it
> just brought up a screenful of random characters. I
suggest you try
> another photo-sharing web site. This one seems to make
it difficult
> for us to view your images.
>
> All your code does it blur the image and then median
filter it (which
> is pretty much useless after you've already blurred it).
You need to
> get to some point where you can threshold an image and
then call
> bwlabel() and regionprops().
>
> Regards,
> ImageAnalyst

Dear ImageAnalyst,
 
 i upload image to u again at the following link

http://www.zshare.net/download/17573065a291c4a7/

 
 i wanna extract iris from above image


to get image like following

 http://www.zshare.net/image/17572827908a9474/

 
 thx 4 ur help
 
 Regards,
 Mazen
 



"Mazen " <glabawy@hotmail.com> wrote in message
<g8sf4t$6bp$1@fred.mathworks.com>...
> Dear ImageAnalyst,
>
> i upload image to u at the following link
>
> http://www.zshare.net/image/17572827908a9474/
>
> i wanna extract iris from above image
>
> thx 4 ur help
>
> Regards,
> Mazen
>
>
> ImageAnalyst <imageanalyst@mailinator.com> wrote in
message
> <f741b5cc-dfed-469c-8eef-
> 4f0c760691d0@t54g2000hsg.googlegroups.com>...
> > On Aug 24, 9:11=A0am, "Mazen " <glab...@hotmail.com>
> wrote:
> > > ImageAnalyst <imageanal...@mailinator.com> wrote in
> message
> > >
> > > <4c6df55d-6066-40e1-8406-
> > > 19c289cf9...@26g2000hsk.googlegroups.com>...
> > >
> > >
> > >
> > > > On Aug 24, 5:26=3DA0am, "Mazen "
<glab...@hotmail.com>
> > > wrote:
> > > > > How can i extract feature from Iris using matlab
> code
> > > > > ?
> > > > ----------------------------------------------------
--
> ----
> > > -----------------=3D
> > > > -------------
> > > > Mazen:
> > > > 1. Search the literature and web for scientific
> articles
> > > on the
> > > > subject.
> > > > 2. Buy the Image Processing Toolkit for MATLAB.
> > > > 3. Learn MATLAB, perhaps even taking the Image
> Processing
> > > course.
> > > > 4. Try to program up something yourself based on
what
> you
> > > learned.
> > > > 5. If you need help, try posting an image somewhere
> that
> > > is publicly
> > > > accessible and post some code for what you've
tried,
> both
> > > here and in
> > > > sci.image.processing.
> > > > Regards,
> > > > ImageAnalyst
> > >
> > > Dear ImageAnalyst,
> > >
> > > thx 4 ur replay
> > >
> > > i work on image at following
> linkhttp://www.4shared.com/account/file/6025=
> > 6182/10c37b46/cc_onl
> > > ine.html
> > >
> > > i tray to extract irisr from image
> > > so i wrote following code
> > >
> > > I=3Dimread('cc.tiff');
> > > I2=3Drgb2gray(I);
> > > h=3Dones(3,3);
> > >
> > > I3=3Dimfilter(I2,h);
> > > =A0I4=3Dmedfilt2(I3,[3 3]);
> > > =A0imshow(I4);
> > >
> > > but i didnt get wht i need,do u help me to extract
iris
> > > fron this image
> > >
> > > Regards
> > >
> > > Mazen- Hide quoted text -
> > >
> > > - Show quoted text -
> > --------------------------------------------------------
--
> -----------------=
> > ----------------------------------
> > Mazen:
> > I was unable to view it. It wouldn't display the
image.
> It would
> > only let me download it. However when I went to
download
> the file it
> > just brought up a screenful of random characters. I
> suggest you try
> > another photo-sharing web site. This one seems to make
> it difficult
> > for us to view your images.
> >
> > All your code does it blur the image and then median
> filter it (which
> > is pretty much useless after you've already blurred
it).
> You need to
> > get to some point where you can threshold an image and
> then call
> > bwlabel() and regionprops().
> >
> > Regards,
> > ImageAnalyst
>

ImageAnalyst wrote:
> Mazen:
> I was unable to view it. It wouldn't display the image. It would
> only let me download it. However when I went to download the file it
> just brought up a screenful of random characters. I suggest you try
> another photo-sharing web site. This one seems to make it difficult
> for us to view your images.

I had to paste the URL together (I do wish they would turn off autowrap
at Matlab Central!), and I did have to go through a "download" step,
but the result for me was a clear image of a human eye with surrounding
eye socket and some eye brow.I would estimate that the pupil part of
it occupies about 1/12th of the image (pretty close to 100 x 100 out
of 400 x 300)


--
Q = quotation(rand);
if isempty(Q); error('Quotation server filesystem problems')
else sprintf('%s',Q), end

Walter Roberson <roberson@hushmail.com> wrote in message
<ezjsk.112046$nD.74884@pd7urf1no>...
> ImageAnalyst wrote:
> > Mazen:
> > I was unable to view it. It wouldn't display the
image. It would
> > only let me download it. However when I went to
download the file it
> > just brought up a screenful of random characters. I
suggest you try
> > another photo-sharing web site. This one seems to make
it difficult
> > for us to view your images.
>
> I had to paste the URL together (I do wish they would
turn off autowrap
> at Matlab Central!), and I did have to go through
a "download" step,
> but the result for me was a clear image of a human eye
with surrounding
> eye socket and some eye brow.I would estimate that the
pupil part of
> it occupies about 1/12th of the image (pretty close to
100 x 100 out
> of 400 x 300)
>
>
> --
> Q = quotation(rand);
> if isempty(Q); error('Quotation server filesystem
problems')
> else sprintf('%s',Q), end


Dear Walter Roberson,
try to download images from following links

Regards Mazen

 Dear Walter Roberson,
 try to download images from following links

 http://www.zshare.net/image/17572827908a9474/


http://www.zshare.net/download/17573065a291c4a7/
 

Regards Mazen

On Aug 24, 4:15=A0pm, "Mazen " <glab...@hotmail.com> wrote:
> Dear ImageAnalyst,
>
> =A0i upload image to u again =A0at the following link
>
> http://www.zshare.net/download/17573065a291c4a7/
>
> =A0i wanna extract iris from above image
>
> to get image like following
>
> =A0http://www.zshare.net/image/17572827908a9474/
>
> =A0thx 4 ur help
>
> =A0Regards,
> =A0Mazen
>
> "Mazen " <glab...@hotmail.com> wrote in message
>
> <g8sf4t$6b...@fred.mathworks.com>...
>
>
>
> > Dear ImageAnalyst,
>
> > i upload image to u at the following link
>
> >http://www.zshare.net/image/17572827908a9474/
>
> > i wanna extract iris from above image
>
> > thx 4 ur help
>
> > Regards,
> > Mazen
>
> > ImageAnalyst <imageanal...@mailinator.com> wrote in
> message
> > <f741b5cc-dfed-469c-8eef-
> > 4f0c76069...@t54g2000hsg.googlegroups.com>...
> > > On Aug 24, 9:11=3DA0am, "Mazen " <glab...@hotmail.com>
> > wrote:
> > > > ImageAnalyst <imageanal...@mailinator.com> wrote in
> > message
>
> > > > <4c6df55d-6066-40e1-8406-
> > > > 19c289cf9...@26g2000hsk.googlegroups.com>...
>
> > > > > On Aug 24, 5:26=3D3DA0am, "Mazen "
>
> <glab...@hotmail.com>
>
>
>
> > > > wrote:
> > > > > > How can i extract feature from Iris using matlab
> > code
> > > > > > ?
> > > > > ----------------------------------------------------
> --
> > ----
> > > > -----------------=3D3D
> > > > > -------------
> > > > > Mazen:
> > > > > 1. Search the literature and web for scientific
> > articles
> > > > on the
> > > > > subject.
> > > > > 2. Buy the Image Processing Toolkit for MATLAB.
> > > > > 3. Learn MATLAB, perhaps even taking the Image
> > Processing
> > > > course.
> > > > > 4. Try to program up something yourself based on
> what
> > you
> > > > learned.
> > > > > 5. If you need help, try posting an image somewhere
> > that
> > > > is publicly
> > > > > accessible and post some code for what you've
> tried,
> > both
> > > > here and in
> > > > > sci.image.processing.
> > > > > Regards,
> > > > > ImageAnalyst
>
> > > > Dear ImageAnalyst,
>
> > > > thx 4 ur replay
>
> > > > i work on image at following
> > linkhttp://www.4shared.com/account/file/6025=3D
> > > 6182/10c37b46/cc_onl
> > > > ine.html
>
> > > > i tray to extract irisr from image
> > > > so i wrote following code
>
> > > > I=3D3Dimread('cc.tiff');
> > > > I2=3D3Drgb2gray(I);
> > > > h=3D3Dones(3,3);
>
> > > > I3=3D3Dimfilter(I2,h);
> > > > =3DA0I4=3D3Dmedfilt2(I3,[3 3]);
> > > > =3DA0imshow(I4);
>
> > > > but i didnt get wht i need,do u help me to extract
> iris
> > > > fron this image
>
> > > > Regards
>
> > > > Mazen- Hide quoted text -
>
> > > > - Show quoted text -
> > > --------------------------------------------------------
> --
> > -----------------=3D
> > > ----------------------------------
> > > Mazen:
> > > I was unable to view it. =A0It wouldn't display the
> image. =A0
> > It would
> > > only let me download it. =A0However when I went to
> download
> > the file it
> > > just brought up a screenful of random characters. =A0I
> > suggest you try
> > > another photo-sharing web site. =A0This one seems to make
> > it difficult
> > > for us to view your images.
>
> > > All your code does it blur the image and then median
> > filter it (which
> > > is pretty much useless after you've already blurred
> it). =A0
> > You need to
> > > get to some point where you can threshold an image and
> > then call
> > > bwlabel() and regionprops().
>
> > > Regards,
> > > ImageAnalyst- Hide quoted text -
>
> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -

---------------------------------------------------------------------------=
-
Mazen:
I see an image that is already binarized. All you have to do then
from that point is to invert the image, do bwlabel() and
regionprops(), and then take the second largest blob (use the
PixelIdxList property if you want to extract just the iris as it's own
separate image). The largest blob will be the surround and the second
largest blob is the iris, and the smaller ones are small specular
reflections or noise.
Regards,
ImageAnalyst

Dear ImageAnalyst,


i wrote this code

I=imread('cc.tiff');
% imshow(I);
I2=rgb2gray(I);
% imshow(I2);

L=bwlabel(I2);
s=regionprops(L,'PixelIdxList');



i get that at command window

PixelIdxList: [120000x1 double]


i dont know how can i extract iris from image

On Aug 27, 6:16=A0am, "Mazen " <glab...@hotmail.com> wrote:
> Dear ImageAnalyst,
>
> i wrote this code
>
> I=3Dimread('cc.tiff');
> % imshow(I);
> I2=3Drgb2gray(I);
> % =A0imshow(I2);
>
> L=3Dbwlabel(I2);
> s=3Dregionprops(L,'PixelIdxList');
>
> i get =A0that at command window
>
> PixelIdxList: [120000x1 double]
>
> i dont know how can i extract iris from image

--------------------------------------------------------
Mazen:
Tell me exactly what you want. "Extract" is pretty vague. Do you
want a binary image of the iris location? Do you want to know the
area of the iris? Do you want to take that and use it as a mask on a
gray scale image and extract the intensity of the gray scale image
under the iris? What exactly do you mean by "extract"?
Regards,
ImageAnalyst

ImageAnalyst <imageanalyst@mailinator.com> wrote in message
<df4eaca6-769a-4bd8-b68f-
b75f393a41f1@d45g2000hsc.googlegroups.com>...
> On Aug 27, 6:16=A0am, "Mazen " <glab...@hotmail.com>
wrote:
> > Dear ImageAnalyst,
> >
> > i wrote this code
> >
> > I=3Dimread('cc.tiff');
> > % imshow(I);
> > I2=3Drgb2gray(I);
> > % =A0imshow(I2);
> >
> > L=3Dbwlabel(I2);
> > s=3Dregionprops(L,'PixelIdxList');
> >
> > i get =A0that at command window
> >
> > PixelIdxList: [120000x1 double]
> >
> > i dont know how can i extract iris from image
>
> --------------------------------------------------------
> Mazen:
> Tell me exactly what you want. "Extract" is pretty
vague. Do you
> want a binary image of the iris location? Do you want to
know the
> area of the iris? Do you want to take that and use it as
a mask on a
> gray scale image and extract the intensity of the gray
scale image
> under the iris? What exactly do you mean by "extract"?
> Regards,
> ImageAnalyst




Dear ImageAnalyst,

i need taht
1-convert this color image to gray scale (i did that using
rgp2gray() )

2- i need to locate iris at grayscale image.


Regrads,
 Mazen