This paper proposes a practical and effective method using phase only correlation for seal image identification. The porposed method can identify the registered seal whthout using conventional pre-preprocessses of pattern recognition such as binarizat...
This paper proposes a practical and effective method using phase only correlation for seal image identification. The porposed method can identify the registered seal whthout using conventional pre-preprocessses of pattern recognition such as binarization, thinning, segmentation, and extraction of features. Experimentation shows that the method is valid for seven types of seal images by determining a threshold for the peak values of phase only correlation.