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python2.7版本,opencv2.4.9版本,如何写能调用我的这个文件显示出我图片中的大象?

python2.7版本,opencv2.4.9版本,我做了一个自己的分类器,最后生成了一个data.xml文件(识别大象),请问python代码如何写能调用我的这个文件显示出我图片中的大象?

下面这段代码是识别人脸的:

# -*- coding: UTF-8 -*-

import numpy as np
import cv2
face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
face_cascade.load('E:OpenCV2.4.9opencvsourcesdatahaarcascadeshaarcascade_frontalface_default.xml')#不加这一行报错
img = cv2.imread('bg.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
faces = face_cascade.detectMultiScale(gray, 1.3, 2)
num = 0;
for (x,y,w,h) in faces:
    cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
    num = num + 1
print(num)
cv2.imshow('img',img)
cv2.waitKey(0)
cv2.destroyAllWindows()

请问python代码如何写能调用我的这个文件显示出我图片中的大象?


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