Kernel RBF in image segmentation

Actually what the means by a and b... can someone help me?

Answer 1

[KALYAN ACHARJYA]

Actually what the means by a and b.

This custom function is based on following paper, kindly check all details

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.704.7699&rep=rep1&type=pdf

[nur hanani]

thanks for answering my question. i had read and do research about the paper you give, but still i cannot understand where they got a and b in this function.