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| || | ||   / _ \\  | || | ||   / _ \\   |  _ \\  
| '--' ||  | / \ || | '--' ||  / //\ \\  | |_| || 
| .--. ||  | \_/ || | .--. || |  ___  || | .  //  
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Text this: A dynamic conditional random field model for foreground and shadow segmentation