擅长:python、mysql、java
<p>图像右上角为原点</p>
<p><code>X</code>向下增加</p>
<p><code>Y</code>从左到右递增</p>
<p>左上角是<code>x1,y1</code>
左下角是<code>x2,y2</code></p>
<p>所以图像[y1:y2,x1:x2]应该会给你所选的感兴趣区域</p>
<p><a href="http://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_core/py_basic_ops/py_basic_ops.html" rel="nofollow noreferrer">Image ROI</a></p>