METHOD OF RECOGNITION OF GRAPHIC IMAGES OF OBJECTS Russian patent published in 2018 - IPC G06K9/48 G06K9/52 G06T7/44 

FIELD: information technology.

SUBSTANCE: invention relates to digital image processing. Method of recognizing graphic images of objects on an original image, presented in digital form in grayscale, invariant to rotations and scaling of graphic images of objects on the image, is characterized by preliminary formation of reference loops and reference contour fragments, performing preliminary processing of the original image, isolating and closing the outlines of the graphic images of the objects of the original image, translating the resulting contours from the coordinate space of the raster into the complex-valued space of the vector contours, by performing a structural analysis of the image form by filters, using the calculation of the value of a normalized scalar product module and constructing a mutually correlated function of the contours of the graphic images of the objects of the original image and the reference fragments of the contours, in this case, a "closed square", "closed rectangle", "line", "unclosed rectangle", "noise" are used as pre-formed reference loops, and the reference fragments of the contours are "straight line", "right angle".

EFFECT: higher speed and accuracy of pattern recognition while reducing the number of false recognitions.

3 cl, 31 dwg