opencv重设图片尺寸

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import cv2
import matplotlib.pylab as plt
import numpy as np

def show(image):
    plt.imshow(image)
    plt.axis('off')
    plt.show()

def imread(image):
    image = cv2.imread(image)
    image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
    return image

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

print image.shape

width = 150
height = 150
image = cv2.resize(image, (width, height), interpolation=cv2.INTER_NEAREST)
show(image)

image = imread('image.jpg')
width = 80
height = int(image.shape[0] * width / image.shape[1])
image = cv2.resize(image, (width, height))
show(image)