Image processing apparatus, image processing method, and recording medium

An image processing method, comprising:

• extracting coating areas representing a coating material from an input image acquired by imaging an inspection object linearly coated with the coating material and grouping the coating areas for each sequence of linear parts;
• calculating a line width in an orthogonal direction of the linear part for each of the linear parts in a plurality of portions of the coating area including end portions of the linear parts;
• detecting a break in the coating material based on the line widths calculated in the plurality of portions;
• and
• outputting an indication representing occurrence of the break when the break is detected, wherein the outputting comprises:
• displaying the input image and displaying a portion in which the break has occurred on the input image in an emphasized manner compared with other portion.

A non-transitory computer readable recording medium recording an image processing program executed by a computer, the image processing program causing the computer to execute:

• extracting coating areas representing a coating material from an input image acquired by imaging an inspection object linearly coated with the coating material and grouping the coating areas for each sequence of linear parts;
• calculating a line width in an orthogonal direction of the linear part for each of the linear parts in a plurality of portions of the coating area including end portions of the linear parts;
• detecting a break in the coating material based on the line widths calculated in the plurality of portions;
• and
• outputting an indication representing occurrence of the break when the break is detected, wherein the outputting comprises:
• displaying the input image and displaying a portion in which the break has occurred on the input image in an emphasized manner compared with other portion.