我正在尝试使用opencv在单独的png / jpg文件中保存检测到的脸部和眼睛,我可以使用它做什么。(我也想要矩形)。代码如下:(我没有启用GUI)
import numpy as np
import cv2
from matplotlib import pyplot as plt
face_cascade = cv2.CascadeClassifier('/Users/i855838/opencv/data/haarcascades/haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier('/Users/i855838/opencv/data/haarcascades/haarcascade_eye.xml')
img = cv2.imread('/Users/i855838/Desktop/xfiles4.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
faces = face_cascade.detectMultiScale(gray, 1.3, 5)
for (x,y,w,h) in faces:
cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
roi_gray = gray[y:y+h, x:x+w]
roi_color = img[y:y+h, x:x+w]
eyes = eye_cascade.detectMultiScale(roi_gray)
for (ex,ey,ew,eh) in eyes:
cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)
cv2.imshow('img',img)
cv2.waitKey(0)
cv2.destroyAllWindows()
答案 0 :(得分:0)
只需使用cv2.imwrite
即可。例如,要保存到名为' face_color.png'你会做cv2.imwrite('face_color.png', roi_color)
。