Retinal Blood Vessel Extraction

Extracts blood vessels from a retina image using Kirsch's Templates

Description

This program extracts blood vessels from a retina image using Kirsch's Templates. Filtering of the input retina image is done with the Kirsch's Templates in different orientations. The threshold used in the program, can be varied to fine tune the output blood vessel extracted image.

• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 6.5 (R13)

[Christopher]

Its an excellent program.

[Ashok Kumar]

NICE JOB.

By Ashok

www.zebrosindia.com

[Cippo Lippo]

To speed the program up you should not use the for loops in VesselExtract.m:60-68

You can easily vectorise the code with:
    bloodVessels = max(t1,t2);
    bloodVessels = max(bloodVessels,t3);
    bloodVessels = max(bloodVessels,t4);
    bloodVessels = max(bloodVessels,t5);
    bloodVessels = max(bloodVessels,t6);
    bloodVessels = max(bloodVessels,t7);
    bloodVessels = max(bloodVessels,t8);

[greeshma haridasan]

sir,
am working on retinal images . first i need to remove the optic disc from my image and then find the region of lesions..i worked on many methods but doesnt seem to get what i want.so please help me out..
http://www.flickr.com/photos/47530846@N05/4359521023/
the above is the kind of image am working on.. desperately in need of help!!!!!

thanks in advance!! :)

[Ahmed Ghorab]

I need your help in fiding a code for optic disc extraction and to claculate the ODR.

[pankaj badoni]

the same thing could have been achieved with the help of canny edge and then giving the threshold values as input.

[Purnima Manke]

sir,
i have taken retinal blood vessel extraction as ma project using median filter and gaussian filter too. i wul lyk to know hoe to implement them in our project,

[Nima Azar]

I'm very to matlab. I would like to test this program, can you tell me how I need to run this?

Thanks.

[Mahdi]

hi all.thanks for code but this code is weak and it cant find all vessels in the image. you can use morphological operator and curvelet transform for improving results.

[Jamuna]