Python-opencv 双线性插值实例

Python  /  管理员 发布于 7年前   197

我就废话不多说了，直接上代码吧！

#coding=utf-8import cv2import numpy as np'''双线性插值'''img = cv2.imread('timg.jpeg', cv2.CV_LOAD_IMAGE_GRAYSCALE) # load the gray imagecv2.imwrite('img.jpg', img)h, w = img.shape[:2]# shrink to half of the originala1 = np.array([[0.5, 0, 0], [0, 0.5, 0]], np.float32)d1 = cv2.warpAffine(img, a1, (w, h), borderValue=125)# shrink to half of the original and movea2 = np.array([[0.5, 0, w /4], [0, 0.5, h / 4]], np.float32)d2 = cv2.warpAffine(img, a2, (w, h),flags=cv2.INTER_NEAREST,borderValue=125)# rotate based on d2a3 = cv2.getRotationMatrix2D((w / 2, h / 2), 90, 1)d3 = cv2.warpAffine(d2, a3, (w, h),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()

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