Method and system for identifying salient-point mould number of revolution-solid glass bottle based on images

Abstract

The invention relates to a method and system for identifying a salient-point mould number of a revolution-solid glass bottle based on images. The method comprises the following steps of: 1) rotating the to-be-identified glass bottle on a turn table, and triggering a camera to collect a panoramic image containing a pitting mould number area by virtue of a photoelectric sensor and a rotary encoder;2) preprocessing the collected image to improve the quality of the image; 3) on the basis of smoothening the image rapidly by virtue of an integral image, segmenting the image by virtue of a dynamic threshold, and carrying out morphologic processing on the image to improve the segmentation effect, screening salient points of a mould according to the features (such as shapes, area and coordinates and the like) of the salient points of the mould, and extracting the coordinates of each salient point; 4) according to the distance relationships among the salient points, calculating corresponding symbolic expressions; and 5) inquiring a glass bottle mould code table, and determining the mould number according to the symbolic expressions obtained in the step 4). According to the invention, lightpaths are transformed by a mirror, thereby satisfying the needs on the space layout and adjustment of equipment; the collection of the high-definition salient-point images of the mould is ensured; and the identification system is simple in structure, low in cost, high in precision, high in speed, and easy to popularize and use.

Description

technical field [0001] The invention relates to a method and a system for recognizing a mold number of a convex point of a glass bottle of a gyroscopic body, in particular to an image-based method and a system for recognizing a number of a mold of a convex point of a glass bottle of a gyroscopic body. Background technique [0002] Glass bottles of different specifications are produced through different molds and production processes. There is a bump mold number near the bottom of the bottle. Different bump arrangements correspond to different mold numbers. The mold number can be identified by querying and decoding the mold code table. Such as manual interpretation, the efficiency is low, or even misjudgment. [0003] For square glass bottles, the front can be photographed, and the mold number can be identified through the image. But for gyroscopic glass bottles, such as: beer bottles. Accurate acquisition of bumps is difficult due to perspective changes during imaging. In...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an image-based method and system for recognizing mold numbers of gyroscopic glass bottles, which has the advantages of simultaneously solving the problems of equipment layout space constraints and high-precision mold number real-time recognition

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