Appearance inspection method of goods and manufacturing method of goods

摘要

PROBLEM TO BE SOLVED: To provide an article appearance inspection method and an article manufacturing method capable of stably and accurately distinguishing black chips and black foreign substances from the appearance inspection of a sintered material. SOLUTION: A first step of removing brightness noise pixels from appearance image data of an article composed of a plurality of pixels and creating smoothed image data composed of a plurality of pixels, and at least one from a plurality of pixels of the smoothed image data. A second step of extracting a defect candidate pixel group having a pixel size or larger, a third step of determining a pixel area including the defect candidate pixel group, and at least one of a brightness value representing the pixel area and a brightness distribution value of the pixel area. The fourth step of calculation, the fifth step of comparing at least one of the brightness value or the brightness distribution value representing the pixel region with a predetermined threshold value, and the fifth step of determining the quality of the appearance portion of the article corresponding to the defect candidate pixel group. Has. [Selection diagram] Fig. 1