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

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Text this: Passive terahertz image processing (I)