VALUE BILL IDENTIFYING METHOD

A value bill identifying method comprises: step 1, collecting color data of to-be-detected value bills by using a color collection device comprising multiple color sensors, and preprocessing the collected color data (102); step 2, extracting corresponding characteristics in the preprocessed color data (103); step 3, matching the extracted characteristics with a characteristic template set corresponding to each type of the value bills to obtain corresponding matching scores, and using the characteristic template having a highest score as the corresponding matched template of the color data; and step 4, determining the types of the value bills according to the matching results (104). In the method, value bills are identified by using trend changes of a stable sub-segment average value set of color data, so that the problem of color shift of the color data can be overcome, and the value bills are accurately identified.