Image recognition using a directional field technique

摘要

Abstract: An approach to the interpretation and recognition of images base on the directional field is developed. A model of an image with structure redundancy is introduced. Digital methods for the construction of the directional field, including the method of coal quadratic approximation, the spectral method, and the variance method, are considered. An optical scheme for the construction of the directional field with the use of radial segment spatial filters is presented. The developed approach is tested in the analysis of fingerprint images, tear crystallograms and interferograms. !15