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

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Text this: Real-time human action recognition by luminance field trajectory analysis