| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability for inspecting a defect by enabling a defect candidate to be verified easily by the visual inspection of an image or the like and the defect to be verified by all means. SOLUTION: In a defect inspection according to the magnetic powder flaw detection method for applying ultraviolet rays to a test piece 1 and emitting fluorescence by a crack defect 2a, the image of the surface of the test piece 1 is picked up by a color television camera 3 via an ultraviolet ray cut filter 5. An original picture according to R, G, and B signals being outputted from the color television camera 3 is stored in an image memory 7 temporarily. The original picture is displayed on a color monitor 9, at the same time a computer 8 processes a G image and detects a defect candidate, and adds and displays a defect candidate marker for each defect candidate in the original picture being displayed on the color monitor 9. An inspector determines the defect candidate in the original picture according to the defect candidate marker and visually verifies whether the defect is a true crack defect or a pseudo defect for the defect candidate. The original picture image and an inspection result are stored in a data storage 11.
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