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How can I remove the excess object detected? Often my code finds more mouths and I want take only one, the one which is belower. Thanks.

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FDetect = vision.CascadeObjectDetector;
I = imread ('Test W.jpg');
figure(1),imshow(I);
title ('...')
BB = step(FDetect,I);
figure(2),
imshow (I); hold on
for i = 1:size(BB,1)
rectangle('Position',BB(i,:),'LineWidth',5,'LineStyle','-','EdgeColor','r');
end
title ('...');
hold off;
NoseDetect = vision.CascadeObjectDetector('Nose','MergeThreshold',16);
BB=step(NoseDetect,I);
figure(3),
imshow(I);hold on
for i = 1:size(BB,1)
rectangle('Position',BB(i,:),'LineWidth',4,'LineStyle','-','EdgeColor','b');
end
title ('...');
hold off;
MouthDetect = vision.CascadeObjectDetector('Mouth','MergeThreshold',16);
BB=step(MouthDetect,I);
figure(4),
imshow(I);hold on
for i = 1:size(BB,1)
rectangle('Position',BB(i,:),'LineWidth',4,'LineStyle','-','EdgeColor','g');
end
title ('f...');
hold off;
EyeDetect=vision.CascadeObjectDetector('EyePairBig');
BB=step(EyeDetect,I);
figure,imshow(I);
figure(5),
imshow(I); hold on
for i = 1:size(BB,1)
rectangle('Position',BB(i,:),'LineWidth',4,'LineStyle','-','EdgeColor','r');
end
title ('...');
hold off;

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Accepted Answer

Mehmed Saad
Mehmed Saad on 28 May 2020
Edited: Mehmed Saad on 28 May 2020
  1. Input the face to mouth and nose detection and not the complete image
  2. play with threshold value
see how picutre on bottom left is cropped from top right picture and after that nose and mouth detection is applied

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