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Why my 'bboxes' and 'scores' variables are all empty while certainly my image contains a person?

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Salad Box
Salad Box on 24 Jul 2019
Edited: Matt J on 24 Jul 2019
Hi,
This is my example image clearly with a person in it.
I would like to use Matlab's 'people detector' to detect the person in the image.
So I tried:
peopleDetector = vision.PeopleDetector;
I = imread('executive1.jpg');
[bboxes,scores] = step(peopleDetector,I);
I was hoping 'bboxes' could give me the position so that I could draw a box around the human in the image. However, 'bboxes' and 'scores' are all empty which I don't understand.
I'm a beginner to human detection. Please help.

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Accepted Answer

Alex Mcaulley
Alex Mcaulley on 24 Jul 2019
Have you tried changing the peopledetector properties? For example, you get a result just changing the model:
peopleDetector = vision.PeopleDetector('ClassificationModel','UprightPeople_96x48');
I = imread('executive1.jpeg');
[bboxes,scores] = step(peopleDetector,I);
bboxes =
103 66 73 125

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More Answers (1)

Matt J
Matt J on 24 Jul 2019
Edited: Matt J on 24 Jul 2019
SVMs are allegedly poorer than neural net classifiers, but this helped,
I=imresize(I,[760,1064]);
peopleDetector = vision.PeopleDetector('UprightPeople_96x48','MinSize',[128,96]*2);

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