title: How to SetPixel and GetPixel on UIView/UIImageView in iOS
body: <p>How to SetPixel and GetPixel on UIView/UIImageView in IOS</p>
  
  <pre><code>SetPixel(point,color);
  
  color GetPixel(point);
  </code></pre>
  
  <p>Basically, I want to remove all blue pixels from picture (UIImage) and make them red.</p>