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
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