MATLAB: How to find seed point in an image

Question

i have seed ,a double 315*332 image and f, a uint8 315*332 image. i need to region growing on f. i want to use seed(matrix that give seeds) to erode it to one pixel to determine the seeds.and then perform region growing algorithem. i dont know with which order or function can do it? and then what should i do to start the algorithem, i mean a bout threshold and seed matrix

Answer 1

How about bwmorph() with 'shrink', inf ?