Light source determination method and system for defect detection

Abstract

The invention discloses a light source determination method and system for defect detection. The light source determination method comprises the following steps: obtaining a to-be-detected same-type-sample set; obtaining an image set, shot under the irradiation of light sources with different parameters, of the samples; extracting the contour data of the defect of the sample corresponding to eachimage to obtain the first contour data, corresponding to the light sources of different parameters, of the samples; obtaining the contour data of the actually measured defects of the samples; carryingout similarity comparison on all the first contour data of the samples and the actual contour values to obtain similarity values; determining the parameter of the light source corresponding to the first contour data with the largest similarity value as the light source parameter of the sample; determining the light source parameter, having the largest occurrence number among the light source parameters corresponding to all samples, as the best light source parameter corresponding to the sample set; and adopting the light source with the best light source parameter to carry out defect detection on the timber kind or plate kind of the sample.With adoption of the light source determination method and system, high-precision defect detection can be realized.

Description

technical field [0001] The invention relates to the field of defect detection, in particular to a method and system for determining a light source for defect detection. Background technique [0002] In daily life or engineering operations, dent defects of objects usually affect their normal use. For example, surface defects of wood or boards in engineering operations will affect their quality, change their performance, and in severe cases affect the quality of engineering operations and reduce safety performance. Most of the existing professional devices for detecting surface defects of wood or boards are relatively complicated, expensive and costly. Therefore, the defect of the object can be detected by taking images. Some existing detection equipment directly use natural light to shoot, and some directly use white light to shoot, which is versatile, but for different types of objects, the detection accuracy is not high. . Contents of the invention [0003] The purpose...

AI Technical Summary

Problems solved by technology

For example, surface defects of wood or boards in engineering operations will affect their quality, change their performance, and in severe cases affect the quality of engineering operations and reduce safety performance

Most of the existing devices for professionally detecting surface defects of wood or boards are relatively complicated, expensive and costly

Therefore, the defect of the object can be detected by taking images. Some existing detection equipment directly use natural light to shoot, and some directly use white light to shoot, which is versatile, but for different types of objects, the detection accuracy is not high.

Images