printing symbols onto an image?

hj-007

I want to ask that how can i add symbols like 'x' or 'o' onto an image permanently?

I know how to write it in a function

figure; imshow(I)
hold on
plot(CentroidTermX,CentroidTermY,'ro','linewidth',2)
plot(CentroidBifX,CentroidBifY,'go','linewidth',2)

but i want to use the resultant image in another file and also in displaying it in a gui but when i use the I as an output argument

function I = detection(X,Y)

it gives the original image without the 'ro' and 'go'. What could be the way to do it?

Help will be appreciated.

Dima

There are functions for that in the Computer Vision System Toolbox:

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