擅长:python、mysql、java
<p>使用<code>numpy</code>可以</p>
<ul>
<li>构建矩阵<code>.array()</code></li>
<li>把它乘以一个向量<code>.dot(vector)</code></li>
</ul>
<pre><code>import numpy as np
x = [[0.299, 0.587, 0.114],[0.147, -0.289, 0.436],[0.615, -0.515, -0.1]]
x = np.array(x)
rgb = [155, 23, 49]
yst = x.dot(rgb)
</code></pre>