JPH0321156U

JPH0321156U -

Info

Publication number: JPH0321156U
Application number: JP8063989U
Authority: JP
Priority date: 1989-07-07
Filing date: 1989-07-07
Publication date: 1991-03-01

Description

[Brief explanation of drawings]

第１図は、実施例の文字認識装置の構成を概略
的に示す図、第２図Ａ〜Ｅは、２値パタンと、各
サブパタンとの説明に供する図、第３図Ａ〜Ｅは
、横書き文字の２値パタンと、各特徴マトリクス
との説明に供する図、第４図Ａ〜Ｅは、縦書き文
字の２値パタンと、各特徴マトリクスとの説明に
供する図、第５図Ａは、縦書き帳票の読み取り方
の説明に供する図、第５図Ｂは、縦書き文字をパ
タンレジスタに格納した様子を示す図である。１１……縦書きの帳票、１３……帳票走行方向
、１５……ラインセンサ、２０……文字認識装置
、２１……光電変換部、２３……パタンレジスタ
、２５……特徴抽出部、２５１……線幅計算部、
２５２……文字枠検出部、２５３……文字枠分割
決定部、２５４……サブパタン抽出部、２５５…
…特徴マトリクス抽出部、２７……識別部、２９
……辞書メモリ、３１……特徴切換部、３１ａ…
…信号線、３３……光信号入力、３５……文字名
出力、Ｓ……制御信号、Ｆ……外接する文字枠。 FIG. 1 is a diagram schematically showing the configuration of the character recognition device of the embodiment, FIGS. 2A to 2E are diagrams for explaining binary patterns and each sub-pattern, and FIGS. 3A to E are Figures 4A to 4E are diagrams for explaining the binary pattern of horizontally written characters and each feature matrix. Figure 5A is a diagram for explaining the binary pattern of vertically written characters and each feature matrix. FIG. 5B, which is a diagram for explaining how to read a vertically written form, is a diagram showing how vertically written characters are stored in a pattern register. DESCRIPTION OF SYMBOLS 11... Vertical writing form, 13... Form running direction, 15... Line sensor, 20... Character recognition device, 21... Photoelectric conversion section, 23... Pattern register, 25... Feature extraction section, 251... ...Line width calculation section,
252...Character frame detection unit, 253...Character frame division determination unit, 254...Sub pattern extraction unit, 255...
...Feature matrix extraction unit, 27...Identification unit, 29
...Dictionary memory, 31...Feature switching section, 31a...
...Signal line, 33... Optical signal input, 35... Character name output, S... Control signal, F... Circumscribing character frame.

Claims

[Scope of claim for utility model registration] A photoelectric conversion unit that optically scans characters on a form and converts the characters into quantized electrical signals, and quantization of at least one character of the quantized signals. It includes a pattern register that stores a pattern, a feature extractor that extracts features of a character obtained from the quantization pattern from the quantization pattern, a dictionary memory, and an identification unit that matches the extracted features with the dictionary memory. The character recognition device further includes a feature switching unit that switches the feature extracted by the feature extraction unit of the character to the feature in the predetermined orientation when the orientation of the character on the document is different from a predetermined orientation. A character recognition device featuring: