POSITIONING METHOD FOR MICRO QR TWO-DIMENSIONAL CODE

摘要

A positioning method for a micro QR two-dimensional code, comprising: step 1, performing edge detection on a micro QR two-dimensional code image, acquiring a connected domain, and then extracting all the contours according to the connected domain; step 2, selecting a rectangular connected domain from the contours obtained in the step 1, and determining the centers of rectangular positioning blocks; step 3, calculating accurate coordinates of the centers of the positioning blocks according to the proportional relation of two-dimensional code positioning blocks; and step 4, using a central point of the positioning block as the starting point, respectively acquiring boundary points in the horizontal direction and boundary points in the vertical direction of a code area along the horizontal and vertical directions of a clock area, determining the code area boundary of a micro QR two-dimensional code according to the two boundary points and the central point of the positioning block. The method effectively solves the problem that the micro QR two-dimensional code cannot be positioned or cannot be accurately positioned.