Character reading device and container inspection system using the same

Abstract

A character reading device (200) for reading and recognizing characters expressed at determined height positions on the outer peripheral surface of a plurality of cylindrical containers (such as bottles BT), wherein, Equipped with: a rotation drive mechanism (203-207), which supports the cylindrical container and makes it rotate around the central axis of the cylindrical container; a camera (201), in order to display the The characters converge in the field of view and are positioned toward the cylindrical container; and the image processing device controls the imaging action of the camera (201) to acquire and display the above-mentioned The image at the height position of the character is used to perform recognition processing, and the image processing device includes: a search unit for searching all image parts including the text from the acquired image; a character recognition unit for identifying the image part searched by the search unit The image of the character of the recognition target included in the image is checked with the model images of a plurality of types of characters to recognize the character of the recognition target; and an output unit outputs the recognition obtained by the character recognition unit for each cylindrical container. result.

Description

technical field [0001] The present invention relates to a character reading device for reading and recognizing characters such as a model number written on the outer peripheral surface of a cylindrical container such as a glass bottle or a polyester bottle manufactured by a plurality of molds, for example. , and a container inspection system embedded with the text reading device. Background technique [0002] At the production site of glass bottles, a bottle making machine divided into a plurality of sections including rough molds and finishing molds is introduced. In each section of the above-mentioned bottle making machine, bottles of the same type are manufactured together, and after that, a plurality of types of inspections are implemented for each of the manufactured bottles. In order to improve quality control and productivity, each bottle is marked with a symbol mark indicating the model number unique to the mold of the manufacturing source, and at the manufacturing ...

AI Technical Summary

Problems solved by technology

[0004] In the past, symbols representing molds were often displayed on the bottom of the bottle as an arrangement of protrusions representing binary codes, but the protrusions of the symbol marks on the bottom of the bottle adversely affected the inspection of the contents after filling at the customer's site, and, In a bottle with a large protrusion on the bottom, there are problems such as that the protrusion of the symbol mark cannot be accurately imaged, so the symbol mark may be displayed on the outer peripheral surface of the bottle, especially the outer peripheral surface of the root.

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