发明名称 |
PLATE GLASS SHATTER TESTING METHOD, DEVICE, IMAGING METHOD FOR GLASS TESTING AND IMAGE SIGNAL PROCESSING METHOD |
摘要 |
A sheet screen is provided on one of sides of test glass, and a projected image of the test glass is electronically and directly picked up. After tone image signals of the test glass thus picked up are binarized while modifying threshold values according to brightness of a background in the tone image, the number of fragments, the area of the greatest fragment and the length of the longest fragment are calculated. Thus, operations, such as calculating the number of the fragments, can be automatically performed by directly picking up an image of the test glass, allowing a fragmentation test to be carried out with good operability and high precision. <IMAGE> |
申请公布号 |
EP0978717(A4) |
申请公布日期 |
2002.01.30 |
申请号 |
EP19990934337 |
申请日期 |
1999.02.18 |
申请人 |
ASAHI GLASS COMPANY LTD.;NIPPON CONTROL SYSTEM CORPORATION |
发明人 |
SAITO, HITOSHI;TAJIMA, TETSUO |
分类号 |
G01N3/30;G01N21/86;G01N21/896;G01N33/38 |
主分类号 |
G01N3/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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