模板匹配(人脸匹配案例)
import cv2 as cv
import numpy as np
def template_demo():
tpl = cv.imread("C:/Users/wml/Desktop/wml/ym_sample.png")
target = cv.imread("C:/Users/wml/Desktop/wml/ym.jpg")
cv.imshow("template image", tpl)
cv.imshow("target image", target)
methods = [cv.TM_SQDIFF_NORMED, cv.TM_CCORR_NORMED, cv.TM_CCOEFF_NORMED]#使用三种方法检测
th, tw = tpl.shape[:2]
for md in methods:
print(md)
result = cv.matchTemplate(target, tpl, md)
min_val, max_val, min_loc, max_loc = cv.minMaxLoc(result)
if md == cv.TM_SQDIFF_NORMED:
tl = min_loc
else:
tl = max_loc
br = (tl[0]+tw, tl[1]+th);
cv.rectangle(target, tl, br, (0, 0, 255), 2)
#cv.imshow("match-"+np.str(md), target)
cv.imshow("match-" + np.str(md), target)#利用
print("--------- Python OpenCV Tutorial ---------")
src = cv.imread("C:/Users/wml/Desktop/wml/ym.jpg")
cv.namedWindow("input image", cv.WINDOW_AUTOSIZE)
cv.imshow("input image", src)
template_demo()
cv.waitKey(0)
cv.destroyAllWindows()