title: How to find the minimum area rectangle in C# using OpenCVSharp?
body: <p>I need to extract a black/white image (signature) from within a white bitmap canvas and resize it to specific dimensions.  The image (sig) is guaranteed to be black on a white background.</p>
  
  <p>The reason is that when we capture the signature, some people write tiny, other fill the capture area. However, I need them all to end up to fill the edges of another image for further processing.</p>
  
  <p>I need to find the X/Y coordinates / rectangle boundary of the signature so I can extract just that portion of the canvas, and not end up with lots of surrounding white space.</p>
  
  <p>I noticed this in a different project, and want to know how to implement in OpenCVSharp.</p>
  
  <p><a href="http://www.emgu.com/wiki/index.php/Minimum_Area_Rectangle_in_CSharp" rel="nofollow">http://www.emgu.com/wiki/index.php/Minimum_Area_Rectangle_in_CSharp</a></p>
  
  <p>thanks.</p>