title: Crop image white space in C#
body: <p>I have the request that crop image white space in C#, and I search some methods from the forum, but it could not satisfy my request.</p>
  
  <p>There is the original image,</p>
  
  <p><img src="https://i.stack.imgur.com/Xrhg1.jpg" alt="enter image description here"></p>
  
  <p>This is the result I expect,</p>
  
  <p><img src="https://i.stack.imgur.com/rQmr4.jpg" alt="enter image description here"></p>
  
  <p>Any help are appreciate.</p>