Question

为什么python代码正确但运行不了结果，求大神解决

import cv2
from pylab import *
import matplotlib.pyplot as plt

saber = cv2.imread(r"F:\zzrzzr\444.jpg")
gray_saber = cv2.cvtColor(saber, cv2.COLOR_RGB2GRAY)
gray_saber = cv2.resize(gray_saber, (200, 200))

def SobelOperator(roi, operator_type):
if operator_type == "horizontal":
sobel_operator = np.array([[-1, -2, -1], [0, 0, 0], [1, 2, 1]])
if operator_type == "vertical":
sobel_operator = np.array([[-1, 0, 1], [-2, 0, 2], [-1, 0, 1]])
else:
raise Exception("type error")
result = np.abs(np.sum(roi * sobel_operator))
return result

def SobelAlogrithm(image, operator_type):
new_image = np.zeros(image.shape)
image = cv2.copyMakeBorder(image, 1, 1, 1, 1, cv2.BORDER_DEFAULT)
for i in range(1, image.shape[0] - 1):
for j in range(1, image.shape[1] - 1):
new_image[i - 1, j - 1] = SobelOperator(image[i - 1:i + 2, j - 1:j + 2], operator_type)
new_image = new_image * (255 / np.max(image))
return new_image.astype(np.uint8)
plt.subplot(121)
plt.title("horizontal")
plt.imshow(SobelAlogrithm(gray_saber, "horizontal"), cmap="binary")
plt.axis("off")
plt.subplot(122)
plt.imshow(SobelAlogrithm(gray_saber, "vertical"), cmap="binary")
plt.axis("off")
plt.show()

Answer 1

没有看到对结果处理。所以就是运行完就结束了。可以搞个中间变量，把运行结果的值赋值给它，再把他打印出来。