Bamboo strip defect on-line detection method based on machine vision

Abstract

The invention discloses a bamboo strip defect online detection method based on machine vision. A camera is used for photographing the four surfaces of a bamboo strip continuously along the length direction of the bamboo strip to obtain the gray images of the surfaces of the bamboo strip. The image treatment is implemented on every captured frame of digital images and whether defects exist on the small section of the bamboo strip in the frame of the images is judged according to the bamboo strip defect detection method. If the small section of the bamboo strip in the frame of the images is provided with detects, the whole bamboo strip is considered to be provided with detects and simultaneously an instruction of the existing defects is sent to a sorting mechanism. If small sections of the bamboo strip in all frames of the images of the whole bamboo strip are provided with no detects, the bamboo strip is considered to be provided no detects. Simultaneously, an instruction with no detects is sent to the sorting mechanism. The method can implement the online detection on the defects of bamboos with different color shades and simultaneously detect the four surfaces along the length direction of the bamboo strip.

Description

Technical field [0001] The invention belongs to the field of visual inspection, in particular to a non-contact inspection method for bamboo strip defects. Background technique [0002] There are 39 genera and more than 500 kinds of bamboo in my country, with a distribution area of ​​more than 5 million hectares. Bamboo resources are rich and strong in regeneration ability, so it is more and more widely used. Generally, after 5-10 years of afforestation, bamboo can be cut and used every year. However, due to geographical environment, climate, humidity and other reasons, some bamboos will rot from the roots during the growth process, and they will grow insects; if they are not stored properly after being cut down, they will become moldy and cracks; and they will be cracked during bamboo processing. Defects such as oblique cutting and over-cutting occur, so defects such as rot, cavities, mold, cracks, and oblique cutting will appear on the bamboo strips. The bamboo product productio...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency that the existing technology cannot automatically detect the defects of bamboo strips, the present invention provides an online detection method for bamboo strip defects based on machine vision, which can detect rot, moth, mildew, On-line automatic detection of defects such as cracks and bevels

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