发明名称 |
METHOD AND APPARATUS FOR DETECTING CHANGE OF CONCRETE SURFACE |
摘要 |
PROBLEM TO BE SOLVED: To provide a method for quickly detecting changes such as cracks or fouling on a soiled or uneven concrete surface through image processing, without fail, and to provide a change detection apparatus.SOLUTION: A change detection method and apparatus detect various changes in the course of the following steps: a step S1 of acquiring a captured image (original image) of a concrete surface; a step S2 of acquiring a pre-processed image obtained by removing fouling or unevenness from the original image; a step S3 of forming four layer images of level 1-4 when a compression rate has four stages due to gradual image compression; a step S5 of extracting corresponding changes from layer images according to an object to be extracted; and a step S13 of integrating all the layer images to display the detected changes all together. |
申请公布号 |
JP2014006222(A) |
申请公布日期 |
2014.01.16 |
申请号 |
JP20120143942 |
申请日期 |
2012.06.27 |
申请人 |
RAILWAY TECHNICAL RESEARCH INSTITUTE;WEST JAPAN RAILWAY CO |
发明人 |
UKAI MASATO;NAGAMINE NOZOMI;MISAKI TETSUKAZU;SAKAMOTO YASUHIKO;KONDO KENICHI |
分类号 |
G01N21/88;G01N21/954;G06T1/00 |
主分类号 |
G01N21/88 |
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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