Detect mask wearing status with OpenCV and Raspberry Pi

Overview

IMG_0076.JPG

IMG_0077.JPG

What to prepare

Preparation

programming

import sys

sys.path.append('/home/pi/.local/lib/python2.7/site-packages')

import numpy as np

import cv2

import time

import datetime

import ambient

args = sys.argv

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

mouth_cascade = cv2.CascadeClassifier('haarcascade_mcs_mouth.xml')

cap = cv2.VideoCapture(0)

while(True):


    ret, frame = cap.read()

    height = frame.shape[0]

    width = frame.shape[1]

    import sys

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    faces = face_cascade.detectMultiScale(gray, 1.3, 5)

    cv2.putText(frame, 'Please face in frame.', (350, 20), cv2.FONT_HERSHEY_PLAIN, 1.5, (0,255,0), thickness=2)

    for (x,y,w,h) in faces:

        roi_gray = gray[y:y+h, x:x+w]

        roi_color = frame[y:y+h, x:x+w]

        cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),2)

        mouth = mouse_cascade.detectMultiScale(roi_gray)

        for (ex,ey,ew,eh) in mouth:

            cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,255),2)

            cv2.putText(frame, 'Not masked!!', (10, 460), cv2.FONT_HERSHEY_DUPLEX, 1.0, (0,0,255), thickness=2)

    resized_img = cv2.resize(frame,(width*2, height*2))

    cv2.imshow('maskcheck', resized_img)

    if cv2.waitKey(1) & 0xFF == ord('q'):

        break

cap.release()

cv2.destroyAllWindows()

maskcheck.sh


#! /bin/bash
cd /home/pi/opencv_programs/
sudo python3 detect_face_camera.py

スクリーンショット 2020-11-08 10.30.24.png

スクリーンショット 2020-11-08 10.32.13.png

Task

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