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  _____     _____     ______   _    _    _    _   
 |__  //   |  ___||  /_____// | || | || | \  / || 
   / //    | ||__    `____ `  | || | || |  \/  || 
  / //__   | ||__    /___//   | \\_/ || | .  . || 
 /_____||  |_____||  `__ `     \____//  |_|\/|_|| 
 `-----`   `-----`   /_//       `---`   `-`  `-`  
                     `-`

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Text this: Optical color image encryption without information disclosure using phase-truncated Fresnel transform and a random amplitude mask