FIELD: electronics. SUBSTANCE: method involves retrieval of significant units of subpictures to be recognized that incorporate n component pixels, where n is chosen within 1≤n≤103 range. Sets of subpictures to be verified that have n1 pixels are selected, where n1 is chosen within 1≤(n1+n)/n≤2 range. Significant units that differ from selected sets of subpictures are retrieved in auxiliary data array with error ε chosen within 0≤ε≤(αn1-1)/n1 range, where α is experimental factor within 0,6≤α≤1,2 range selected as function of rate of occurrence of any i-th significant unit in permissible set of significant units which is defined as repetitive quantity n2 of particular significant units related to total quantity n3 of significant units in their permissible set. Pixels that do not coincide with characters equivalent to them in location in significant units found in the course of retrieval are detected in recognized significant units equivalent to them in location and replaced by characters of respective location retrieved from significant units found. Additional array of dynamic raster standards of computer codes is formed as part of recognizable significant units and auxiliary data array is converted, bearing in mind preceding operations, until total error ε3 of method chosen relative to intermediate error ε1 is reduced within 1 ≤ (ε1+ε3)/ε1≤ 2. range. EFFECT: reduced conversion and/or verification error.
