Species bill multifeed detection method and apparatus

Embodiment of the present invention discloses a kind of bill multifeed detection method, there are attachments for solving existing multifeed detection banknotes, and the banknote slightly arched problems like the case of thick JiuChao likely to cause false positives. Example embodiments of the present invention comprises: acquiring a front image and the back image to be identified banknote, and transmission image; obtaining positive banknote information and reverse the banknote information to be recognized banknotes are of a front side image and the back side images, and initializes the corresponding local characteristics properties window local feature attribute corresponding to a window comprising predetermined characteristic properties required for recognition region template identification image; measuring the degree of coupling of the front image and the back transmission image of the partial image characteristic attribute window, to obtain a measurement result; determining whether the measurement result conforms to a predetermined condition heavy notes, if so, to be recognized as the most important money bill, if not, to be recognized as the most important bills are not money. Embodiments of the invention further provides bill kinds multifeed detection means.