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Can i take output from viola jones algorithm

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AP
AP 2020-5-4
回答： Walter Roberson 2020-5-6
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.
  2 个评论
AP
AP 2020-5-6
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.

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回答（1 个）

Walter Roberson
Walter Roberson 2020-5-6
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

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