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

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Text this: Generalized Perona-Malik equation for image restoration