To implement face recognition and count the number of faces in an image using MATLAB, you can utilize the Computer Vision Toolbox, specifically the ‘vision.CascadeObjectDetector’ system object, which detects objects. After reading the image using ‘imread’, create a face detector object and apply it to the image to detect faces. The 'step' function applied on the face detector returns bounding boxes (bbox) around detected faces, with each row of bbox representing a face in the format [x y width height].
To visually verify the detection, use the ‘insertObjectAnnotation’ function to draw bounding boxes around detected faces on the image. This process effectively counts and highlights faces in an image.
For more information, you can refer to the documentation link below –
