Application of high density to matrix symbology based on quadratic Radon transformation
Donghong Hu, MA Qin-wei, Hao Wang, Zhang Ling, Ying Wang · Computer Engineering and Applications Journal · 2010
According to the fundament of Radon transform,a new algorithm based on the quadratic transformation of row-difference and column-difference is proposed.By adopting this algorithm,the module of two-dimensional symbology can be recognized rapidly and accurately,even though the minimum module of the barcode is about only 2.3 pixels in size.This algorithm can be used in the two-dimensional matrix symbology with the level of high density(subpixel),such as QR Code,Data Matrix,and Code93.