SELF-ADAPTIVE IDENTIFICATION METHOD OF IDENTIFYING NEGOTIABLE INSTRUMENT AND DEVICE

A self-adaptive identification method of identifying a negotiable instrument and a device are adopted to resolve problems of a systematic accumulated error and early correction. The identification method comprises: obtaining a sampling parameter, and sampling, according to the sampling parameter, an optoelectronic signal of a negotiable instrument (101); obtaining an optoelectronic signal correction value, and performing, according to the photoelectric signal correction value, digital compensation on the photoelectric signal (102); extracting a characteristic from the digitally compensated optoelectronic signal to obtain an eigenvector (103); inputting the eigenvector into a predefined classifier to perform identification, so as to obtain an identification result of the negotiable instrument (104); obtaining, according to the identification result, a specific area corresponding to the negotiable instrument (105); obtaining, according to the specific area, characteristic information of the optoelectronic signal of the negotiable instrument (106); computing, according to the characteristic information, an accumulated component and a differentiation error of the negotiable instrument (107); computing, according to the accumulated component and the differentiation error, a total correction value of the optoelectronic signal (108); updating, according to the total correction value, the correction value and the sampling parameter of the optoelectronic signal (109); and outputting the identification result (110).