Application of Phase Correlation Algorithm in Material Identification

As the market competition becomes more and more fierce, the advanced logistics technology has been introduced in all kinds of occupations. Under the background, the barcode technology was created. As phase correlation algorithm based on FFT has less computing matching, high precision, high noise tolerance and anti-geometric deformation capacity, it is a widely used method of image registration. In this paper phase correlation algorithm is applied to the barcode identification, so as to increase speed of items recognition and robustness of the algorithm. And in order to identify the barcode which is partly destroyed or inversed in the process of moving goods, there is the rotation-invariant phase correlation algorithm combining polar coordinate transform with phase correlation, which can recognize the correlated image and detect translation and rotation angle between two correlated images.