Labeling object in a binary image MATLAB -


i trying label white objects in binary image using matlab. basically, aim detect water bodies in aerial map image , convert cimage binary , label bodies. here image example of output after detecting bodies , converting binary. how can possibly create create rectangle around white objects , label them text(using connected components)? thank you!

enter image description here

try -

%%// read in image file img = im2bw(imread(file));  %%// bounding box stats stats = regionprops(bwlabel(img),'area','centroid','perimeter','boundingbox'); boxes=cat(1,stats.boundingbox);  %%// placeholder store final result maskm = false(size(img,1),size(img,2));  k1 = 1:size(boxes,1)      %%// initialize mask representing each bounding box     mask1 = false(size(img,1),size(img,2));      %%// coordinates of boxes     starty = round(boxes(k1,1));     stopy = starty+round(boxes(k1,3))-1;     startx = round(boxes(k1,2));     stopx = startx+round(boxes(k1,4))-1;      %%// finaly create mask     mask1(startx:stopx,starty:stopy) = true;     maskm = maskm + imdilate(edge(mask1,'sobel'),strel('disk',2)); end  %%// boxes around original blobs maskm = maskm + img; figure,imshow(maskm);

output

enter image description here

look text on how label boxes.


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