| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel plate edge detecting method which is applicable to an inspection device for detecting surface defects and internal defects of a steel plate, and capable of correctly detecting an edge of the steel plate at low cost. SOLUTION: A candidate of a channel to detect an edge is extracted from the signal of each channel obtained for each detection scan, and the estimation value of the plate width is calculated from the candidate. The calculated value is compared with the measured value of the plate width, and further, the edge channel position in the previous scan is compared with the channel position in the present scan. COPYRIGHT: (C)2007,JPO&INPIT
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