# -*- coding: utf-8 -*-   
#线性锐化滤波-拉普拉斯算子进行二维卷积计算
#code:myhaspl@myhaspl.com
import cv2
import numpy as np
from scipy import signal
fn="test6.jpg"
myimg=cv2.imread(fn)
img=cv2.cvtColor(myimg,cv2.COLOR_BGR2GRAY)
srcimg=np.array(img,np.double)
myh=np.array([[0,1,0],[1,-4,1],[0,1,0]])

myj=signal.convolve2d(srcimg,myh,mode="same")
jgimg=img-myj
cv2.imshow(‘src‘,img)
cv2.imshow(‘dst‘,jgimg)
cv2.waitKey()
cv2.destroyAllWindows()

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