Facemask Detection using OpenCV python

Face Mask Detection Haar Cascade

This is how it detects

You can get cascade file here

To create your own haar cascade files see this tutorial

How to use this cascade file :

Reduce size of image before applying cascade for better results

For Testing we used 300x300 size for all images

Try with different sizes for accurate results

import cv2 as cv

fmcascade=cv.CascadeClassifier("facemaskcascade.xml")
image = cv.imread("test_image.jpg")
image = cv.resize(image, (300, 300))
fm = fmcascade.detectMultiScale(image, 1.12,2,None,(120,120),(300,300)) # try with different values for better results

for (x, y, w, h) in fm:
    cv.rectangle(image, (x, y), (x + w, y + h), (0, 0, 0))

cv.imshow("Final Image",image)

If it did not work for any image , convert image to gray mode and then try again

gray_image = cv.cvtColor(image, cv.COLOR_BGR2GRAY)

Not 100% accurate

For creating custom cascade files see this post