| 摘要 |
PURPOSE:To detect a small flaw even in the case of a painted surface having large undulation. CONSTITUTION:The roughness of a surface to be inspected is detected by a surface roughness meter 13 and removed from the video signal of the surface to be inspected detected by a unidimensional sensor 11 in a filter processing part 22 and the part of a flaw F is removed to smooth the video signal. By this method, a threshold level for binarization can be set high in a flaw detection part 23 regardless of the magnitude of the roughness of the surface to be inspected. By this constitution, the inspection accuracy of a surface flaw is enhanced. |
