template_matching.py

import cv2
import cv2 as cv
import numpy as np
from matplotlib import pyplot as plt
import glob

template = cv.imread('crop1.jpg',1)
w, h = template.shape[:-1]

methods = ['cv2.TM_CCOEFF', 'cv2.TM_CCOEFF_NORMED', 'cv2.TM_CCORR',
            'cv2.TM_CCORR_NORMED', 'cv2.TM_SQDIFF', 'cv2.TM_SQDIFF_NORMED']
methods1 = ['cv2.TM_CCORR_NORMED']

for i in glob.glob('images2/*.jpg'):

    img = cv2.imread(i)

    for meth in methods1:

        method = eval(meth)
        # Apply template Matching
        res = cv.matchTemplate(img,template,method)
        min_val, max_val, min_loc, max_loc = cv.minMaxLoc(res)
        print(max_val)

        if max_val > 0.86:

            # If the method is TM_SQDIFF or TM_SQDIFF_NORMED, take minimum
            if method in [cv.TM_SQDIFF, cv.TM_SQDIFF_NORMED]:
                top_left = min_loc
            else:
                top_left = max_loc
            bottom_right = (top_left[0] + w, top_left[1] + h)
            cv.rectangle(img,top_left, bottom_right, 255, 2)
            cv.imshow('Image', img)
            cv.waitKey(0)
            """plt.subplot(121),plt.imshow(res,cmap = 'gray')
            plt.title('Matching Result'), plt.xticks([]), plt.yticks([])
            plt.subplot(122),plt.imshow(img,cmap = 'gray')
            plt.title('Detected Point'), plt.xticks([]), plt.yticks([])
            plt.suptitle(meth)
            plt.show()"""