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haedal-programming
opencvWithPython
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helloOpenCV.py
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helloOpenCV.py
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import cv2
import sys
# 사진과 얼굴의 어떤 부분을 인식할까요?
imagePath = sys.argv[1]
cascPath = "haarcascade_frontalface_default.xml"
# haar cascade를 결정합니다
faceCascade = cv2.CascadeClassifier(cascPath)
# 이미지를 읽어와 흑백사진으로 전환합니다
image = cv2.imread(imagePath)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# 흑백사진 상태에서 얼굴을 탐지합니다
faces = faceCascade.detectMultiScale(
gray,
scaleFactor=1.1,
minNeighbors=10,
minSize=(30, 30)
# flags = cv2.cv.CV_HAAR_SCALE_IMAGE
)
# 몇개의 얼굴을 찾았는지 말합니다
# 얼굴이 없는 사람들이 종종 있어요
print("Found {0} faces!".format(len(faces)))
# 얼굴에 초록색 사각형 그려주기 -> RGB (0, 255, 0)
# 빨강은 (255,0,0), 파랑은 (0,0,255)
for (x, y, w, h) in faces:
cv2.rectangle(image, (x, y), (x+w, y+h), (0, 255, 0), 2)
# 원으로 그린다면?
# cv2.circle(image,(x+int(w/2),y+int(h/2)), w, (0,0,255), 2)
# 얼굴에 사각형을 친 사진을 출력합니다
cv2.imwrite("Faces.png", image)
# cv2.imwrite("Faces_circle.png", image)
cv2.waitKey(0)
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