METHOD OF RECOGNITION OF CONTENT OF COMPRESSED IMMOBILE GRAPHIC MESSAGES IN JPEG FORMAT

摘要

FIELD: data processing.;SUBSTANCE: invention relates to the field of data recognition. Method for recognizing a compressed immobile graphic message is based on a sequence of operations, as a result of which a JPEG file is decoded before the dequantization procedure, an array of DCT coefficient values of the color component Y is formed, the central moments are calculated from the distribution of these coefficients, characteristic vector of features thereof is formed, values thereof are normalized, then they are used in a linear predictive rule and decision is made whether a compressed NHS in JPEG format belongs to one of the recognized classes.;EFFECT: reducing the processing time of the compressed NHS in the JPEG format by reducing the number of operations and ensuring the correct recognition of the content.;1 cl, 4 dwg, 1 tbl