source code analisa bentuk

% Rahmat Robi Waliyansyah, M.Kom

% Website: robiinformatikaupgris.wordpress.com % Email : rahmat.robi.waliyansyah@upgris.ac.id

clc;clear;close all;

RGB = imread('pillsetc.png'); imshow(RGB);

I = rgb2gray(RGB); threshold = graythresh(I); bw = im2bw(I,threshold); bw = bwareaopen(bw,30);

se = strel('disk',2); bw = imclose(bw,se); bw = imfill(bw,'holes');

[B,L] = bwboundaries(bw,'noholes');

hold on

for k = 1:length(B) boundary = B{k};

plot(boundary(:,2), boundary(:,1), 'w', 'LineWidth', 2) end

stats = regionprops(L,'Area','Centroid','Eccentricity');

for k = 1:length(B) boundary = B{k};

delta_sq = diff(boundary).^2;

area = stats(k).Area;

eccentricity = stats(k).Eccentricity; metric = 4*pi*area/perimeter^2;

centroid = stats(k).Centroid;

text(centroid(1),centroid(2)-16,num2str(k),'Color','r',... 'FontSize',20,'FontWeight','bold');

disp('===================================') disp(strcat(['Object number = ', num2str(k)])) disp(strcat(['Area = ',num2str(area)]))

disp(strcat(['Perimeter = ',num2str(perimeter)])) disp(strcat(['Metric = ',num2str(metric)]))

disp(strcat(['Eccentricity = ',num2str(eccentricity)]))

if metric>0.8

text(centroid(1)-16,centroid(2)+16,'Bulat','Color','r',... 'FontSize',20,'FontWeight','bold');

else

text(centroid(1)-16,centroid(2)+16,'Tidak Bulat','Color','b',... 'FontSize',20,'FontWeight','bold');