擅长:python、mysql、java
<p>使用<a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.clip.html" rel="noreferrer">numpy.clip</a>:</p>
<pre><code>import numpy as np
np.clip(data32, 0, 255, out=data32)
data_u8 = data32.astype('uint8')
</code></pre>
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<p>请注意,您也可以通过以下方式在不使用numpy的情况下使图像变亮:</p>
<pre><code>import ImageEnhance
enhancer = ImageEnhance.Brightness(img)
outimg = enhancer.enhance(1.2)
outimg.save('out.png')
</code></pre>