JP5322334B1 - Braille cell image reading and conversion device - Google Patents

Abstract

A braille cell image reading / conversion device for recognizing a braille part as a braille cell image from a braille document or a braille document having convex braille description on both sides and converting the image into input braille data.
SOLUTION: The entire reading of the Braille text is read to recognize the beginning of the line, the end of the line, and the end of the sentence in the line, and the Braille cell image of the convex Braille is recognized from the beginning of the recognized convex line and read. Optical two-time reading consisting of the second reading for recognizing the input mass image is performed. Then, the standard braille cell image pattern and the braille data in the braille cell image database are collated and specified, and converted into an input cell image and input braille data.
[Selection] Figure 1

Description

The present invention relates to a Braille cell image reading and converting device that reads a Braille document and a Braille document, recognizes it as a Braille cell image, and converts it into input Braille data.

Since the surface of a Braille document or Braille document is alternately sent from a convex line to a concave line in a sentence in which convex Braille is described, a method of recognizing a convex surface by gray-scale image and shade reading by oblique light irradiation (Patent Document 1, Patent) In the literature 2), a problem remains in the reliability of detecting convex Braille from the convex / concave description text.

Japanese Patent No. 3281786 JP-A-8-227455

In the prior art, there is a problem in the reliability of detecting convex Braille from convex / concave description text.
Although it was a technical problem to recognize irradiation shading and shade reading, the effect of recognizing Braille information from a search of a mass image by the two-time reading configuration of the present invention was obtained.

Braille documents and existing Braille documents existing at facilities for providing information and hearing impaired information throughout the country are read accurately as Braille cell images without sacrificing the bibliographic value, and the read Braille cell images are input. It is to provide a Braille cell image reading and converting device having a function of converting into data.

The present invention converts the reflected light by aligning the end of the braille text with the vertical and horizontal dots of the braille document and the braille document displayed in one square braille, with the alignment mark on the platen, and applying light from below. In the first reading, the entire Braille text is read and the beginning of the whole line, the end of the line, and the end of the sentence in the line are recognized, and in the second reading, the convex portion 6 of one square from the beginning of each convex line. The input mass image is identified by comparing the read input mass image obtained by correcting the image with the image processing technology of noise extraction processing and feature extraction, and the standard braille cell image pattern in the braille cell image database. And recognizes the recognized input cell image with the Braille data in the Braille cell image database, and converts it into input Braille data.

According to the present invention, Braille data can be converted into Braille data at any time without impairing the bibliographic value of Braille documents and valuable Braille documents possessed by the audiovisual handicapped information providing facilities nationwide.

It is a braille information related figure of the braille cell image reading and converting apparatus of the present invention.

    Hereinafter, an embodiment of a Braille cell image reading and converting apparatus according to the present invention will be described with reference to FIG.

In FIG. 1, the first reading is performed by aligning the end of the braille text with 3 vertical dots and 2 horizontal dots displayed in 1 square braille and aligning the alignment mark on the platen, and applying light from below to convert the reflected light Then, the image is read into a mass image, the entire Braille text is read, and the beginning, end of line, and end of sentence in the line are recognized. In the second reading, a braille cell image represented by the presence or absence of 6 convex surface portions of one cell from the beginning of each convex surface line is subjected to noise removal processing, and the read input cell image is image-corrected by image processing technology for feature extraction. A standard braille cell image pattern in the cell image database is identified and identified as an input cell image. The recognized input cell image is identified with the Braille data in the Braille cell image database and converted to input Braille data.

Claims (1)

Braille document and braille document 3 vertical and 2 horizontal points are displayed in 1 square braille. Align the end of the braille text with the alignment mark on the platen, apply light from below, convert the reflected light, and create a square image The first time, the entire Braille text is read, the beginning of the whole line, the end of the line, and the end of the text in the line are recognized, and in the second reading, depending on the presence or absence of 6 convex points of 1 square from the beginning of each convex line The read input mass image obtained by correcting the image of the Braille square image represented by the noise removal processing and the image processing technology of feature extraction is compared with the standard Braille square image pattern in the Braille square image database, and recognized as the input mass image. A Braille cell image reading and converting apparatus characterized by collating and identifying a recognized input cell image with Braille data in a Braille cell image database, and converting it into input Braille data.