發送短信 : Decoding optical communication based on cell phone cameras

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