Algorithm 2 Contour Area Filter

1: Input: image = cv2.imread(“./welding01.jpg”) 2:     hsvVals = {‘hmin’:0, ‘smin’:0, ‘vmin’:250, ‘hmax’:179, ‘smax’:135, ‘vmax’:255} 3: Initialize: imgColor, mask = myColorFinder.update(image, hsvVals) 4:         contours, hierarchy = cv2.findContours(mask, cv2.RETR_EXTER           NAL, cv2.CHAIN_APPROX_NONE) 5: Repeat: for cnt loop every contours do: 6:             area = cv2.contourArea(cnt) 7:             (x, y, w, h) = cv2.boundingRect(cnt) 8:             if area_threshold_1 < area < area_threshold_2: 9:               print(x, y, w, h) Output: (x, y, w, h) contour area