Method for reading latent image of printed matter, latent image reading device and latent image reading software

摘要

Problem to be solved: to provide a latent image reading method, a latent image reading apparatus and a latent image reading software for visualizing and confirming a latent image from a printed matter having a latent image.The present invention comprisesAn area containing a latent image on the printed matterCapture or scan to acquire image dataThe parameters set according to the characteristics of the latent image are read.For image dataPreprocessing for extracting latent images andExtraction of edges which are local features of latent image andAfter the post-processing for visualizing the latent image clearly,Latent image reading method by visualizing latent image and displaying screenThe latent image reading apparatus and the latent image reading software.Diagram