how we can divide an image patch into multiple level(layers) in matlab

for eg lung nodule image attached here ,how we can divide into multiple concentric level

Answer 1

[Image Analyst]

You didn't attach anything but anyway I suggest you look here http://www.visionbib.com/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models for algorithms as we don't do complicated algorithm development here. Come back if you have any questions about MATLAB code - far more specific that "How do I make an algorithm in MATLAB that finds...whatever?"

[aswathy]

sir i didnt get any code from there.i attached my base paper here sir please help me to find out the codes for multilevel construction of this input image

[Image Analyst]

Of course there is no code there. It's simply a list of all image processing articles, much like the one you attached. Have you contacted the authors and asked if they have MATLAB code they're willing to share with you? Of course that is the first step. If they don't want to share actual code then you and others will have to write their own if they want to replicate what the authors have done. See the FAQ: http://matlab.wikia.com/wiki/FAQ#Can_you_program_up_the_algorithm_in_this_article_for_me_and_explain_it_to_me.3F