Detect text area in an image using python and opencv
<p>I want to detect the text area of images using python 2.7 and opencv 2.4.9
and draw a rectangle area around it. Like shown in the example image below.</p>

<p>I am new to image processing so any idea how to do this will be appreciated.</p>

<p><a href="https://i.stack.imgur.com/a4VWN.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/a4VWN.jpg" alt="building blueprint with labeled rooms"></a></p>