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Array indices must be positive integers or logical values in facial detection

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Evan Rose
Evan Rose on 23 Mar 2021
Answered: Shashank Gupta on 29 Mar 2021
Good afternoon,
I am not sure why i am getting this error returned when i am using the following code;
faceDetector = 'vision.CascadeObjectDetector';
I = imread('INSERT PICTURE LOCATION HERE');
bboxes = faceDetector(I);
IFaces = insertObjectAnnotation(I,'rectangle',bboxes,'Face');
figure
imshow(IFaces)
title('Detected faces');
I am not sure what this error means as the pixel values i am using are all positive values so I am very confused. What can I do to achieve a successful output?
Thanks.
  1 Comment
Geoff Hayes
Geoff Hayes on 23 Mar 2021
Evan - please copy and paste the full error message to this question so that we can see which line of code is throwing the error.

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Answers (1)

Shashank Gupta
Shashank Gupta on 29 Mar 2021
Hi Evan,
I think you got confused in defining a facedetector. Check out the following code, this might help you.
faceDetector = vision.CascadeObjectDetector(); % Correct way to define this object.
I = imread('INSERT PICTURE LOCATION HERE'); % Read an image.
bboxes = faceDetector(I); % call the function.
IFaces = insertObjectAnnotation(I,'rectangle',bboxes,'Face');
figure
imshow(IFaces)
title('Detected faces');
Also check out this resource page in case you stuck somewhere.
I hope this helps.
Cheers.

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