Can i take output from viola jones algorithm

Hello everyone,

I need image output from viola jones algorithm. I have used Viola jones on gray image and result has square box around face regions in image. I need these detected face images for further processing.

how i should take out those detected faces and save it as image?

Thank you in advance.

[Walter Roberson]

imcrop()

[AP]

Thank you sir. I have tried using imcrop but it's manual process. I want the output face detected from viola jones algorithm to be directly displayed as output. Please need help for this. Thank you.

Answer 1

[Walter Roberson]

When you step() the viola jones detector, you get an array of bounding boxes. You can loop through each row of the bounding box, passing the row to imcrop.

bbox = step(my_viola_detector_object, IMG);
nbox = size(bbox,1);
pieces = cell(nbox,1);
for K = 1 : nbox
    pieces{K} = imcrop(IMG, bbox(K,:));
end