Determination of datum points for palmprint image

 I m not able to extract the datum point of the palm image.Please, anyone suggest me the way or method to determine these datum point. I want to use these datum point to extract the center of palm which i require for ROI image.

Thanks in advance.

Answer 1

[Walter Roberson]

What have you done so far? Have you read this paper ?

[Promila]

ya, i read this paper but i m not able to implement that directional projection algorithm in MATLAB. May u help me to implement this. i m not as much familiar about MATLAB that's why i m facing problem and Thank you so much for reply.

[Walter Roberson]

What have you done so far? What is your existing code? Even if your code calls routines to do well-defined portions that you do not know how to handle yet, create the structure and the variables complete with the calls, and for each routine to do a specific portion that you do not know how to implement, document (comment) exactly what the expected inputs and expected outputs are, and fill in as much of the routine as you are able.

Please review http://www.mathworks.com/matlabcentral/answers/8026-best-way-s-to-master-matlab

[Promila]

i m just starting the code for palmprint matching by using paper

http://www.cse.msu.edu/rgroups/biometrics/Publications/Palmprints/DutaJainMardiaPalmprints_TechRp00.pdf

but i want to implement this on specific palm region rather than whole area so i m trying to determine the region of interest by determing location of fixed datum point, then i'll calculate the center of the palm and by using this center point i'll draw a rectanguar portion. This is all about that i want to do as a first step.what ur opinion regarding this?is this right?

[Image Analyst]

Threshold, label, regionprops. Then you'll have the centroid and you can call imcrop. It can be literally 3 to 5 lines of code.