擅长:python、mysql、java
<p>高斯是以(0,0)为中心的,所以围绕这个原点设置轴。例如</p>
<pre><code>In [40]: size = 200
In [41]: sigma_x,sigma_y = 50, 20
In [42]: x = np.array([np.arange(size)]) - size/2
In [43]: y = np.transpose(np.array([np.arange(size)])) - size /2
In [44]: psf = 1/(2*np.pi*sigma_x*sigma_y) *
np.exp(-(x**2/(2*sigma_x**2) + y**2/(2*sigma_y**2)))
In [45]: pylab.imshow(psf)
Out[45]: <matplotlib.image.AxesImage at 0x10bc07f10>
In [46]: pylab.show()
</code></pre>
<p><img src="https://i.stack.imgur.com/MhBEz.png" alt="enter image description here"/></p>