selection of patches and key word insertion

Dear sir,

I segment the image using super pixel segmentation algorithm.Next i need to select the patchecs and some keywords should be embeded in to it.Code for segmentation attached below ,Then how select the patches? Help me sir

im = imread('capture1.jpg');

[L,N] = superpixels(im,40);

figure

BW = boundarymask(L);

imshow(imoverlay(im,BW,'cyan'),'InitialMagnification',67)