Printed matter reading inspection method and its equipment, and printed matter reading inspection software

摘要

To provide a method of reading and inspecting a printed matter, a device for the method, and a software for reading and inspecting a printed matter, the method, device and software being capable of easily and surely reading a latent image.SOLUTION: The method of reading and inspecting a printed matter, the device for the method, and the software for reading and inspecting a printed matter acquire image data by photographing a latent image on a printed matter, and subjects the acquired imaged data to smoothing in one direction, extracting an edge, and smoothing in the other direction to display an image, thereby reading and inspecting a latent image.SELECTED DRAWING: Figure 1