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Makssonik
testing_python
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# https://www.youtube.com/watch?v=1Yi3irfC8BA
# Импорт OpenSV и назначение имени cv
import cv2 as cv
# вывод версии OpenSV
print(cv.__version__)
# Захват изображения с веб камеры, по умолчанию веб камера с id 0
capture = cv.VideoCapture(0)
# Подгружаем каскад с лицами
face_cascade = cv.CascadeClassifier('haarcascade_frontalface_default.xml')
# Цикл выводит изображение с WEB-камеры пока не нажмешь ESC
while True:
# Получаем изображение
ret, img = capture.read()
# Основной поиск лица. img - где искать.
# scaleFactor - размер.
# minNeighbors - сколько соседей может быть, точнее поиск будет.
# minSize - минимальный размер поискового квадрата
faces = face_cascade.detectMultiScale(img, scaleFactor=1.5, minNeighbors=5, minSize=(20, 20))
# Рисуем квадрат на изображении
for (x, y, w, h) in faces:
# img - где рисуем
# (x, y) - начало квадрата
# (x+w, y+h) - конец квадрата
# (0, 0, 255) - цвет
# 2 - толщина
cv.rectangle(img, (x, y), (x + w, y + h), (0, 0, 255), 2)
cv.imshow('From camera', img) # Показывает изображение с заголовком
k = cv.waitKey(30) & 0xFF # Ждет нажатия кнопки ESC 30 мил.сек., и все это в integer
if k == 27:
break
# Прекращает использовать веб камеру
capture.release()
# Закрывает все окна
cv.destroyAllWindows()
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