coins.png how to find the smallest coin in a image and display it alone in a separate window?

26 views (last 30 days)
betty
betty on 10 Jan 2022
Answered: DGM on 10 Jan 2022
how to find the smallest coin in the image below and display it alone in a separate window

Accepted Answer

DGM
DGM on 10 Jan 2022
Something like this:
A = imread('coins.png');
m = bwareaopen(A>80,100);
% get areas, sort, get bounding box
C = regionprops(m,'area','boundingbox');
area = vertcat(C.Area);
[~,idx] = min(area);
bbox = C(idx).BoundingBox;
% get subimage, display
thiscoin = imcrop(A,bbox);
imshow(thiscoin)
I chose to interpret "smallest" as meaning "has the least area". If you wanted some measure of diameter, you'd have to get the appropriate region property and sort it.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!