【图像处理】模板匹配的学习笔记

OpenCV的模板匹配算法

• cv.TM_CCOEFF
• cv.TM_CCOEFF_NORMED
• cv.TM_CCORR
• cv.TM_CCORR_NORMED
• cv.TM_SQDIFF
• cv.TM_SQDIFF_NORMED

匹配代码模板

image = cv2.imread(r"scene.png", cv2.IMREAD_GRAYSCALE)
template = cv2.imread(r"element.png", cv2.IMREAD_GRAYSCALE)
res = cv2.matchTemplate(img, template, cv2.TM_CCOEFF_NORMED)
min_val, max_val, min_loc, max_loc = cv2.minMaxLoc(res)

if max_val > 0.8:
    print("Detected")
else:
    print("Not detected")

Note：

1. cv2.TM_CCOEFF_NORMED：相较于其它方法，通常被认为具有较好的鲁棒性