顔がやばいことになるカメラ。LinuxClubの学祭展示中にライブコーディングしたやつ。

funny_face.py

import random

import cv2
import numpy


cascade = cv2.CascadeClassifier('/usr/local/Cellar/opencv3/HEAD/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml')

cam = cv2.VideoCapture(0)

while True:
	ret, img = cam.read()

	if not ret:
		print('error?')
		break
	img = cv2.resize(img, (1024, 768))

	gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
	gray = cv2.resize(gray, (img.shape[1]//4, img.shape[0]//4))

	faces = cascade.detectMultiScale(gray)

	blur = cv2.cvtColor(cv2.GaussianBlur(img, (9, 9), 10), cv2.COLOR_BGR2HSV)
	mask = numpy.zeros_like(img)

	if len(faces) > 0:
		for rect in faces:
			width = max(rect) * 2
			x, y = (rect[:2] + (rect[2:]//2)) * 4

			cv2.circle(mask, (x, y), width, (1, 1, 1), -1)

			img = mask * blur + (1-mask) * img

	#cv2.namedWindow('scr', 0x10)
	cv2.imshow('scr', img)

	if cv2.waitKey(10) > 0:
		break

cam.release()
cv2.destroyAllWindows()