Identification method for valuable file and identification device thereof

A value document distinguishing device fir distinguishing whether a current value document is fake, wherein the value document distinguishing device comprises:

• a collection module for obtaining an original infrared image, type, denomination and orientation data of the current value document;
• a storage module for storing size data and infrared characteristic data of a standard value document;
• a projection calibration module for performing calibration process on the original infrared image using image projection transformation technology according to the size data of the standard value document to form a second infrared image, the size of the second infrared image being matched with the size of the standard value document;
• a process module for obtaining size data and infrared characteristic data of the standard value document corresponding to the current value document from the storage module according to the type, denomination and orientation data of the current value document;
• obtaining infrared characteristic data of the current value document from the second infrared image, and comparing the Obtained infrared characteristic data of the current value document with the infrared characteristic data of the standard value document, to obtain a legal/illegal document signal for the current value document;
• an output module for outputting the legal/illegal document signal;
• and
• a control module for controlling and coordinating data transfer among respective modules in the value document distinguishing device.