coins = imread ('F:\Transfer\PROJECT\M.Tech\morphology\coiiins.jpg');
coins1=rgb2gray(coins);
level = graythresh (coins1);
coins2 = im2bw (coins1, level);
se=strel('disk',7);
coins3=imerode(coins2,se);
B = bwboundaries(coins3);
imshow(coins3)
text(10,10,strcat('\color{green}Objects Found:',num2str(length(B))))
hold on