How to detect faces without using vision.CascadeObjectDetector

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Mahmoud Abdelaziz 2022-3-27

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https://ww2.mathworks.cn/matlabcentral/answers/1682044-how-to-detect-faces-without-using-vision-cascadeobjectdetector

评论： yanqi liu 2022-3-29

I am new in matlab I am trying to detect faces without using built in functions but I not able to do this any help.

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yanqi liu 2022-3-28

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https://ww2.mathworks.cn/matlabcentral/answers/1682044-how-to-detect-faces-without-using-vision-cascadeobjectdetector#answer_928339

yes，sir，may be use ycbcr color segment to identify face as simple method

if possible，can you upload your image to analysis？

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Mahmoud Abdelaziz 2022-3-28

Thank you for helping but this only work for this image, if I change the image it does not work properly.

yanqi liu 2022-3-29

在 MATLAB Online 中打开

yes，sir，if use different image，may be check

https://ww2.mathworks.cn/matlabcentral/fileexchange/73947-mtcnn-face-detection?s_tid=srchtitle

such as

im = imresize(I, 0.3, 'bilinear');
detector = mtcnn.Detector("MinSize", 15, "MaxSize", 308, "PyramidScale", 5);
[bboxes, scores, landmarks] = detector.detect(im);
displayIm = insertObjectAnnotation(im, "rectangle", bboxes, scores, "LineWidth", 2);
imshow(displayIm)
hold on
for iFace = 1:numel(scores)
    scatter(landmarks(iFace, :, 1), landmarks(iFace, :, 2), 'filled');
end