collect all same coins in each figure

Question

Tu Nguyen 2022-4-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1695895-collect-all-same-coins-in-each-figure

回答： Image Analyst 2023-9-7

money.png

Dear all;

I want to collect all same value coins in each figure. For example, all 1 cent coin in 1 figure, all 5 cent coin in 1 figure. How can I do that?

Really appreciate for your help

clc;
close all;
clear;
I = imread("money.png");
Ig = rgb2gray(I);
imshow(Ig);
Ib = imbinarize(Ig,'global');
imshow(Ib);
se = strel('disk',2);
Ih = imerode(Ib,se);
Ih = Ib - Ih;
imshow (Ih);
If = imfill(Ih,'holes');
label = bwlabel(If);
max(max(label));
im1 = (label ==1);
figure;
imshow(im1)
for i = 1:max(max(label));
    [row, col] = find(label ==i);
    len = max(row)-min(row)+2;
    breath = max(col)-min(col) +2;
    target = uint8(zeros([len breath]));
    sy = min(col) - 1;
    sx = min(row) - 1;
    for j = 1:size(row,1);
        x = row(j,1) - sx;
        y = col(j,1) - sy;
        target(x,y) = I(row(j,1),col(j,1));
    end
    mytitle = strcat('Object Number:',num2str(j));
    figure;
    imshow(target);
end

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Answer 1

Image Analyst 2023-9-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1695895-collect-all-same-coins-in-each-figure#answer_1304576

This is just what my tutorial does. See my Image Segmentation Tutorial in my File Exchange:

Image Analyst's File Exchange

It's a generic, general purpose demo of how to threshold an image to find blobs, and then measure things about the blobs, and extract certain blobs based on their areas or diameters, like dimes or nickels only.