图像金字塔

其他

发布时间 : 2021-01-02 15:17

阅读 :

import cv2 as cv
import numpy as np
from matplotlib import pyplot as plt


def pyramid_demo(image):
    level = 3
    temp = image.copy()
    pyramid_images = []
    for i in range(level):
        dst = cv.pyrDown(temp)
        pyramid_images.append(dst)
        cv.imshow('pyramid_demo_'+str(i), dst)
        temp = dst.copy()
    return pyramid_images

def lapalian_demo(image):
    pyramid_images = pyramid_demo(image)
    level = len(pyramid_images)
    for i in range(level-1, -1, -1):
        if (i-1) < 0:
            expand = cv.pyrUp(pyramid_images[i], dstsize=image.shape[:2])
            lpls = cv.subtract(image, expand)
            cv.imshow('lapalian_demo_' + str(i), lpls)
        else:
            expand=cv.pyrUp(pyramid_images[i],dstsize=pyramid_images[i-1].shape[:2])
            lpls = cv.subtract(pyramid_images[i-1], expand)
            cv.imshow('lapalian_demo_'+str(i), lpls)

src = cv.imread('./lena.jpg')  # blue, green, red
# cv.namedWindow('input image', cv.WINDOW_AUTOSIZE)
cv.imshow('input image', src)
pyramid_demo(src)
# lapalian_demo(src)
cv.waitKey(0)

cv.destroyAllWindows()

转载请注明来源，欢迎对文章中的引用来源进行考证，欢迎指出任何有错误或不够清晰的表达。可以在下面评论区评论，也可以邮件至 2621041184@qq.com