Python-OpenCV 处理图像（六）：模糊操作（均值模糊、中值模糊）

import cv2
import numpy as np

__author__ = "zxsuperstar"
__email__ = "zxsuperstar@163.com"


def blur_demo(image): #均值模糊   去随机噪声有很好的去燥效果
    dst = cv2.blur(image,(5,5))
    cv2.imshow("dst",dst)


def median_blur_demo(image):  #中值模糊 ,去噪(椒盐噪声)
    dst = cv2.medianBlur(image,3)
    cv2.imshow("dst",dst)


def custom_blur_demo(image):  #自定义卷积核
    # kernel = np.ones([5,5],np.float32)/25
    kernel = np.array([[0,-1,0],[-1,5,-1],[0,-1,0]],np.float32) #锐化 总和等于0，一般边缘梯度， 总和等于1，一般是增强
    dst = cv2.filter2D(image,-1,kernel=kernel)
    cv2.imshow("dst",dst)

if __name__ == "__main__":
    src = cv2.imread("t.jpg") #blue green red
    cv2.namedWindow("image", cv2.WINDOW_AUTOSIZE)
    cv2.imshow("image",src)
    # median_blur_demo(src)
    # blur_demo(src)
    custom_blur_demo(src)
    cv2.waitKey(0)
    cv2.des