Surface inspection device and surface inspection method

摘要

A surface inspection device includes an image generator for generating a digital image achieved by imaging an inner surface of a bore which is subjected to a boring work, a line extraction processor for extracting a line along a horizontal direction set to a line extraction direction from the digital image, for determining the state of the inner surface of the bore based on the line extracted by the line extraction processor. The line extraction processor extracts lines along the line detection direction from respective digital images before and after rotation which are achieved by rotating the digital image once or over plural times every predetermined angle while the line extraction direction is fixed, and the estimating unit determines the state of the inner surface of the bore based on the lines extracted from the respective digital images before and after the rotation.

主权项

1. A surface inspection device comprising:
image generating means that generates a digital image achieved by imaging a surface of a machined workpiece; line extracting means that extracts a line corresponding to a flaw along a predetermined line detection direction from the digital image; and determining means that determines a surface state of the workpiece on the basis of the line extracted by the line extracting means, wherein the line extracting means rotates the digital image once or over plural times every predetermined angle while the line detection direction is fixed, and extracts lines along the line detection direction from respective digital images before and after the rotation, the determining means determines the surface state of the workpiece on the basis of the lines extracted from the respective digital images before and after the rotation, and the respective digital images before and after the rotation shows a same area on the surface of the machined workpiece.