templateMatching.py

import cv2


img = cv2.imread("input.png")
tmpl = cv2.imread("tmpl.png")

gray = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
tmpl = cv2.cvtColor(tmpl, cv2.COLOR_RGB2GRAY)

match = cv2.matchTemplate(img, gray, cv2.TM_SQDIFF_NORMED)
min_value, max_value, min_pt, max_pt = cv2.minMaxLoc(match)
pt = min_pt

hight, width = tmpl.shape[:2]
cv2.rectangle(
    img,
    (pt[0], pt[1]),
    (pt[0] + width, pt[1] + hight),
    (0, 0, 200),
    3
)
cv2.imwrite("output.png", img)