程序代码:
#导入cv模块
# -*- coding=utf-8 -*-
import cv2 as cv
import numpy as np
#lapalian算子
def lapalian_demo(image):
# dst=cv.Laplacian(image,cv.CV_32F)
# lpls=cv.convertScaleAbs(dst)
kernel=np.array([[1,1,1],[1,-8,1],[1,1,1]])
dst=cv.filter2D(image,cv.CV_32F,kernel=kernel)
lpls=cv.convertScaleAbs(dst)
cv.imshow("lapalian_demo",lpls)
#sobel算子
def sobel_demo(image):
grad_x=cv.Sobel(image,cv.CV_32F,1,0)
grad_y=cv.Sobel(image,cv.CV_32F,0,1)
gradx=cv.convertScaleAbs(grad_x)
grady=cv.convertScaleAbs(grad_y)
cv.imshow("gradient_x",gradx)
cv.imshow("gradient_y",grady)
gradxy=cv.addWeighted(gradx,0.5,grady,0.5,0)
cv.imshow("gradient",gradxy)
#图像梯度:scharr算子:增强边缘
def scharr_image(image):
grad_x = cv.Scharr(image, cv.CV_32F, 1, 0)#x方向导数
grad_y = cv.Scharr(image, cv.CV_32F, 0, 1)#y方向导数
gradx = cv.convertScaleAbs(grad_x)
grady = cv.convertScaleAbs(grad_y)
cv.imshow("gradient_x", gradx)#颜色变化在水平分层
cv.imshow("gradient_y", grady)#颜色变化在垂直分层
gradxy = cv.addWeighted(gradx, 0.5, grady, 0.5, 0)
cv.imshow("gradient", gradxy)#合成
print("------------Hi,Python!-------------")
# 读取图像,支持 bmp、jpg、png、tiff 等常用格式
src = cv.imread("F:/Projects/images/test1.png")
#创建窗口并显示图像
cv.namedWindow("input image",cv.WINDOW_AUTOSIZE)
cv.imshow("input image",src) #显示原图
#sobel_demo(src)
lapalian_demo(src)
#scharr_image(src)
cv.waitKey(0)
#释放窗口
cv.destroyAllWindows()
运行效果:
一、索贝尔算子(sobel)
二、scharr算子
三、拉普拉斯算子