Micro-QR (Quick Response) code recognition method based on picture processing

The invention discloses a micro-QR code recognition method based on picture processing. A micro-QR code is a scaled-down version of a standard QR code and is mainly designed for applications which cannot deal with large scanning. The invention discloses a method for positioning, correcting and recognizing the micro-QR code. The method comprises the steps of firstly, finding a connected region and positioning a barcode after screening; secondly, extracting marginal information of the barcode by utilizing a hollowing-out algorithm and then obtaining a rotation angle during rotation correction by utilizing a Hough transform; and thirdly, performing data sampling and decoding after the rotation correction. Experiments show that the method can recognize the micro-QR code quickly and accurately.