How can I make a buzzer when face is detected?

Current project is creating face detector using matlab with buzzer when it detect a face, my code is here:

faceDetector = vision.CascadeObjectDetector();

%Get the input device using image acquisition toolbox,resolution = 640x480 to improve performance obj =imaq.VideoDevice('winvideo', 1, 'YUYV_640x480','ROI', [1 1 640 480]); set(obj,'ReturnedColorSpace', 'rgb'); figure('menubar','none','tag','webcam');

while (true) frame=step(obj); bbox=step(faceDetector,frame);

    boxInserter  = vision.ShapeInserter('BorderColor','Custom',...
    'CustomBorderColor',[255 255 0]);
videoOut = step(boxInserter, frame,bbox);

    imshow(videoOut,'border','tight');

    f=findobj('tag','webcam');

    if (isempty(f));
        [hueChannel,~,~] = rgb2hsv(frame);

% Display the Hue Channel data and draw the bounding box around the face. figure, imshow(hueChannel), title('Hue channel data');

rectangle('Position',bbox,'EdgeColor','r','LineWidth',1) hold off noseDetector = vision.CascadeObjectDetector('Nose'); faceImage = imcrop(frame,bbox); imshow(faceImage) noseBBox = step(noseDetector,faceImage);

noseBBox(1:1) = noseBBox(1:1) + bbox(1:1); videoInfo = info(obj); ROI=get(obj,'ROI'); VideoSize = [ROI(3) ROI(4)];

videoPlayer = vision.VideoPlayer('Position',[300 300 VideoSize+30]); tracker = vision.HistogramBasedTracker; initializeObject(tracker, hueChannel, bbox);

while (1)

% Extract the next video frame frame = step(obj); % RGB -> HSV [hueChannel,~,~] = rgb2hsv(frame);

    % Track using the Hue channel data
    bbox = step(tracker, hueChannel);

    % Insert a bounding box around the object being tracked
    videoOut = step(boxInserter, frame, bbox);

    %Insert text coordinates

    % Display the annotated video frame using the video player object
    step(videoPlayer, videoOut);
    pause (.2)
end

% Release resources release(obj); release(videoPlayer);

        close(gcf)

        break
    end
    pause(0.05)
end
release(obj)

I don't know where to put the code when the face is detected, it will buzz using arduino.

Answer 1

[Image Analyst]

Attach a buzzer to your Arduino, then send a signal to that pin when you want. I assume you already know how to talk to your Arduino.

We didn't look over your code, but you can fix that by reading this link to format it properly.

Answer 2

[Image Analyst]

Here is John's favorite way to indicate success, like at finding a particular face:

s = load('handel.mat')
soundsc(s.y, s.Fs); % Make sure your speakers are turned way up.

Not an Arduino method though.

Answer 3

[eden hashim]

hey can you please help me how can i send a data after face detection in matlab to arduino so that my arduino has to open a stepper motor

Answer 4

[Shrut I]

boxInserter = vision.ShapeInserter('BorderColor','Custom',... 'CustomBorderColor',[255 255 0]); videoOut = step(boxInserter, frame,bbox); imshow(videoOut,'border','tight'); f=findobj('tag','webcam'); if (isempty(f)); [hueChannel,~,~] = rgb2hsv(frame); % Track using the Hue channel data bbox = step(tracker, hueChannel); % Insert a bounding box around the object being tracked videoOut = step(boxInserter, frame, bbox); %Insert text coordinates % Display the annotated video frame using the video player object step(videoPlayer, videoOut); pause (.2) end