METHOD FOR CODING PAPILLARY PATTERN OF PRINT Russian patent published in 2002 - IPC

FIELD: identifying person by finger-prints and palm-prints. SUBSTANCE: method involves separation of papillary lines on papillary pattern and their characteristic features, numbering of these characteristics, determination of vector of direction and coordinates for each characteristic, type of characteristic, vector and degree of curvature of papillary lines in vicinity of characteristics, scale characteristic as mean distance between papillary lines in vicinity of characteristic feature. Novelty is that two projections are drawn from each characteristic to adjacent papillary lines, then secant line is drawn to the right and to the left of each characteristic through distance of several papillary lines perpendicular to tangent to crossed papillary lines, cut link-lines are numbered in section, and event generated by characteristic on link or by projection from characteristic is evaluated, and number of this characteristic is associated with event. EFFECT: reduced memory capacity, enhanced measurement accuracy. 3 cl, 4 dwg, 2 tbl