import cv2
import numpy as np
from matplotlib import pyplot as plt
 
img_rgb = cv2.imread('all_cards.png')
img_gray = cv2.cvtColor(img_rgb, cv2.COLOR_BGR2GRAY)
# cv2.imshow("123",img_gray)
# cv2.waitKey(0)
template = cv2.imread('8d.png',0)
w, h = template.shape[::-1]
 
res = cv2.matchTemplate(img_gray,template,cv2.TM_CCOEFF_NORMED)
# cv2.namedWindow('image', cv2.WINDOW_NORMAL)
# cv2.imshow("123",res)
#
# cv2.waitKey(0)
 
threshold = 0.95
loc = np.where( res >= threshold)
for pt in zip(*loc[::-1]):
    cv2.rectangle(img_rgb, pt, (pt[0] + w, pt[1] + h), (0,0,255), 2)
 
cv2.imwrite('res.png',img_rgb)
 

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