2.几何变换_图像金字塔

#导入工具包

from imutils import *

#读入图片

image = imread('image.jpg')
show(image)
image.shape

#高斯金字塔

for i in range(4):
    image = cv2.pyrDown(image)
    print(image.shape)
    show(image)

for i in range(4):
    image = cv2.pyrUp(image)
    print(image.shape)
    show(image)

# 拉普拉斯金字塔
image = imread('image.jpg')
down_image1 = cv2.pyrDown(image)
down_image2 = cv2.pyrDown(down_image1)
up_image = cv2.pyrUp(down_image2)
laplacian = down_image1-up_image
show(laplacian)

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