[人工智能]opencv在大图中标记出小图

直接看效果
大图：
小图：

程序运行效果图：
代码部分：

# coding: utf-8
# 团   队:风讯网络
# 后   端:dopa
# 开发时间:2021/10/11 15:08
import cv2


def template_demo():
    tpl = cv2.imread("./a1.png")
    target = cv2.imread("./a4.png")
    cv2.imshow("target image", target)
    th, tw = target.shape[:2]
    result = cv2.matchTemplate(target, tpl, cv2.TM_CCOEFF_NORMED)

    min_val, max_val, min_loc, max_loc = cv2.minMaxLoc(result)
    tl = max_loc
    br = (tl[0] + tw, tl[1] + th)
    cv2.rectangle(tpl, tl, br, (0, 0, 255), 2)
    print(tl)
    print(br)
    cv2.imshow("match-" + str(cv2.TM_CCOEFF_NORMED), tpl)


if __name__ == "__main__":
    template_demo()
    cv2.waitKey(0)
    cv2.destroyAllWindows()