我就廢話不多說了，直接上程式碼吧！

#coding=utf-8
import cv2
import numpy as np
'''雙線性插值'''
img = cv2.imread('timg.jpeg',cv2.CV_LOAD_IMAGE_GRAYSCALE) # load the gray image
cv2.imwrite('img.jpg',img)
h,w = img.shape[:2]

# shrink to half of the original
a1 = np.array([[0.5,0],[0,0.5,0]],np.float32)
d1 = cv2.warpAffine(img,a1,(w,h),borderValue=125)

# shrink to half of the original and move
a2 = np.array([[0.5,w /4],h / 4]],np.float32)
d2 = cv2.warpAffine(img,a2,flags=cv2.INTER_NEAREST,borderValue=125)
# rotate based on d2
a3 = cv2.getRotationMatrix2D((w / 2,h / 2),90,1)
d3 = cv2.warpAffine(d2,a3,flags=cv2.INTER_LINEAR,borderValue=125)

cv2.imshow('img',img)
cv2.imshow('d1',d1)
cv2.imshow('d2',d2)
cv2.imshow('d3',d3)
cv2.waitKey(0)
cv2.destroyAllWindows()

以上這篇Python-opencv 雙線性插值例項就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。