| 摘要 |
PURPOSE:To prevent the recognition of a defect part from being omitted due to the division of it into two by obtaining the frame of defective data when the cylindrical defect is replaced with picture data and checked. CONSTITUTION:A cylinder is rotated and photographed, and a cylinder surface is fetched as the picture data. When the picture data have a defect S at a sampling starting point, it is divided into S1 and S2, and recognized. There, the frame of the S1 is counter-clockwise obtained, whether or not a closed loop is drawn is decided, when the frame loop is not closed, it is restarted. At such a time, the frame of the S2 is counter-clockwise obtained, XY coordinates for two parts (totally four points) at which the frames of the S1 and S2 are opened are obtained, when the Y coordinates of the respective points are converted and the Y coordinates are made to corresponds, whether or not the both are the same coordinates is decided, when they correspond, it is decided to be one defect, and the area of the defect part S is obtained. |
