How to locate people in an image

%Create a people detector, and load the input image.

   peopleDetector = vision.PeopleDetector;
   I = imread('visionteam1.jpg');
%Detect people using the people detector object.

   [bboxes, scores] = step(peopleDetector, I);
%Create a shape inserter and a score inserter.

   shapeInserter = vision.ShapeInserter('BorderColor','Custom','CustomBorderColor',[255 255 0]);
   
    scoreInserter = vision.TextInserter('Text',' %f','Color', [0 80 255],'LocationSource','Input port','FontSize',16);
%Draw detected bounding boxes, and insert scores using the inserter objects.

    I = step(shapeInserter, I, int32(bboxes));
    I = step(scoreInserter, I, scores, int32(bboxes(:,1:2)));
    figure, imshow(I)
    title('Detected people and detection scores');