TRANSPARENT BASE MATERIAL VISIBILITY EVALUATION DEVICE, TRANSPARENT BASE MATERIAL VISIBILITY EVALUATION PROGRAM AND COMPUTER READABLE RECORD MEDIUM HAVING THE SAME RECORDED, LAMINATE ALIGNMENT DEVICE, LAMINATE ALIGNMENT PROGRAM AND COMPUTER READABLE RECORD MEDIUM HAVING THE SAME RECORDED, DEVICE AND PROGRAM OF DETERMINING PRESENCE OF MARKS OWNED BY METAL AND TRANSPARENT BASE AND COMPUTER READABLE RECORD MEDIUM HAVING THE SAME RECORDED, AND DEVICE AND PROGRAM OF DETECTING POSITION OF MARKS OWNED BY METAL AND TRANSPARENT BASE AND COMPUTER READABLE RECORD MEDIUM HAVING THE SAME RECORDED

摘要

PROBLEM TO BE SOLVED: To efficiently and accurately evaluate visibility of a transparent base material.;SOLUTION: A visibility evaluation device 10 comprises: photographing means 11 that photographs a mark 16 present beneath a transparent base material 17 over the transparent base material 17; observation point-brightness value graph preparation means that measures a brightness value for each observation point in a direction orthogonal to an extension direction of the observed mark 16 as to an image captured by photographing, and prepares an observation point-brightness value graph; and visibility evaluation means that evaluates visibility of a transparent base material 15 by a tilt of a brightness value curve produced from an end part of the mark 16 over to a part thereof where the mark 16 is not present in the observation point-brightness value graph. The visibility evaluation means evaluates the visibility, using a difference ΔB between a top average value Bt of the brightness value curve produced from the end part of the mark to the part thereof where the mark is not present and a bottom average value Bb thereof, an intersection point of the brightness value curve and the top average value Bt in the observation point-brightness value graph and an intersection point of the brightness value curve and 0.1ΔB in a depth range from the intersection point of the brightness value curve and the top average value Bt to the 0.1ΔB with reference to the top average value Bt.;COPYRIGHT: (C)2014,JPO&INPIT