ImageGear for C and C++ on Windows v19.4 - Updated
DOT 9-Pin Draft Dot-Matrix Recognition Module
User Guide > How to Work with... > OCR > Concepts > Recognition Modules > DOT 9-Pin Draft Dot-Matrix Recognition Module

Module name:

DOT

Module identifier:

IG_REC_RM_DOT

Filling methods supported:

IG_REC_FM_DRAFTDOT9

Filters supported:

all filter elements

Trade-off supported:

none

Knowledge base file:

TUDAS.FA

Training supported:

yes

This section provides information about the following:

Application Areas

This module is designed for ONLY draft-quality 9-pin dot-matrix texts. For NLQ or LQ texts, the OMNIFONT_PLUS2W, OMNIFONT_PLUS3W, OMNIFONT_MTX, OMNIFONT_FRX or OMNIFONT_MOR modules are likely to give better results.

Range of Characters

This module supports 76 languages, of which 14 have dictionary support: Catalan, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Norwegian, Portuguese, Spanish, and Swedish. It can read multiple languages. It can read 18 of the 29 punctuation characters. (The Low Double Comma Quotation Mark is missing.) It supports 24 of the 55 miscellaneous characters. (Some missing characters are: the Euro Sign, the Small Script F, the Copyright Sign, Registered Trade Mark Sign and the Degree Sign.)

The following table lists all accented letters this module can recognize. The range of uppercase ones supported by this module is limited, since in 9-pin dot-matrix text, there is difficulty in printing these letters. Those with lowercase support only are listed separately:

Upper & Lowercase

Lowercase Only

Cap.&Small A Acute (A’)

Small A Circumflex (a^)

Cap.&Small AE (Ae)

Small A Macron (a-)

Cap.&Small A Ring (Ao)

Small A Grave (a`)

Cap.&Small A Umlaut (A:)

Small E Umlaut (e:)

Cap.&Small A Tilde (A~)

Small E Circumflex (e^)

Cap.&Small C Cedilla (C,)

Small E Grave (e`)

Cap.&Small E Acute (E’)

Small I Umlaut (I:)

Cap.&Small I Acute (I’)

Small I Circumflex (I^)

Cap.&Small N Tilde (N~)

Small I Grave (I`)

Cap.&Small O Double Acute (O")

Small O Circumflex (O^)

Cap.&Small O Acute (O’)

Small O Macron (O-)

Cap.&Small O Umlaut (O:)

Small O Grave (O`)

Cap.&Small O Tilde (O~)

Small S Hacek (Sv)

Cap.&Small O Slash (O/)

Small U Circumflex (U^)

Cap.&Small AE(OE)

Small U Grave (U`)

Cap.&Small U Double Acute (U")

Cap.&Small U Acute (U’)

Cap.&Small U Umlaut (U:)

Accuracy Issues

This module does not interpret the recognition trade-off setting and cannot be trained.

Character Attributes

Since this module recognizes draft dot-matrix texts, character attributes are not applicable. Expanded characters are not recognized, condensed printout can be enabled, but the accuracy is liable to be low.

Conditions

This module is used if it is directly specified in a zone structure.

If DRAFTDOT9 filling method is set together with AUTO, OMNIFONT_MTX is used, provided that all characters (or languages or filters) validated for the zone are supported by it. If any are not supported, this module is used.

It can generate confidence data on recognized characters and can interpret all filter values.