how to implement the edge detection algorithem

can any one tell me step by step how to do edge detection?

Answer 1

[Image Analyst]

For some reason, beginners want to do edge detection on everything as a first step. So read the link Walter gave and then post your image and tell us what you want to measure and we'll tell you if edge detection is even appropriate, or the best method. Perhaps simple thresholding is what you need - we'll never know unless you share your image and your desired measurements.

[sana saleeme]

in fact i am doing detection of malarial parasite in blood through image processing.so edge detection is the second step of it.so u guys can help me?

[Image Analyst]

Possibly, if it only takes a few minutes of coding, but not if it involves reading and implementing some paper.

Answer 2

[Walter Roberson]

http://www.mathworks.com/discovery/edge-detection.html