Patent ID: 6766046
Filing Date: 2004-07-20
Classification: G01N

Abstract:
A plate-shaped glass fragmentation testing method for testing a plate-shaped test glass having first and second opposite sides, comprising:fragmenting the plate-shaped test glass; a glass image pickup operation providing a sheet screen in substantially close contact with the second side of the plate-shaped test glass, and irradiating light for image pickup to the second side from the first side of the plate-shaped test glass, and electronically and directly picking up a projected image of the fragmented plate-shaped test glass on the screen from the second side of the plate-shaped test glass; and an image processing operation performing a calculating operation to calculate a number of fragments of the plate-shaped test glass, an area of a greatest fragment, and a length of a longest fragment in at least a selected region based on tone image signals derived from the projected image of the fragmented plate-shaped test glass.