Save Images

h1ros

Jun 24, 2019, 6:41:09 AM

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Goal¶

This post aims to introduce how to save images using matplotlib.

Reference

matplotlib documentation - matplotlib.pyplot.savefig

Libraries¶

In [2]:

import numpy as np
import matplotlib.pyplot as plt

Create a image to save¶

In [6]:

img = np.random.randint(0, 255, (64, 64))
img

Out[6]:

array([[216, 200, 219, ...,  82, 176, 244],
       [ 17,  90,  86, ...,  91, 234, 195],
       [ 34, 226, 103, ..., 230,  86, 127],
       ...,
       [191, 110,  33, ...,  62, 109,  26],
       [ 43, 238, 208, ...,  51,   0, 123],
       [163, 156, 235, ..., 212, 188,  25]])

Show an image¶

In [9]:

plt.imshow(img);
plt.axis('off');

Save an image as png¶

In [33]:

plt.savefig('../images/savefig_sample_image.png')

<Figure size 432x288 with 0 Axes>

In [36]:

!ls ../images | grep image.png

savefig_sample_image.png