PLUS2W and PLUS3W Omnifont Recognition Modules

Module name:	PLUS2W and PLUS3W
Module identifier:	OMNIFONT_PLUS2W and OMNIFONT_PLUS3W
Filling methods supported:	OMNIFONT
Filters supported:	ALL, DIGIT and ALPHA
Trade-off supported:	FAST, BALANCED, ACCURATE
Knowledge base file:	RECOGN.BCT, RECOGN24.BCT

Both PLUS2W and PLUS3W require the presence of FRX, MTX and MOR recognition modules.

Application Areas

This recognition module recognizes machine printed text; i.e. from printed publications, laser or ink-jet printers and electric typewriters. Output from mechanical typewriters in good condition may also be acceptable.

Range of Characters

This module supports the same set of characters as the OMNIFONT_MOR module.

Accuracy Issues

The PLUS2W and PLUS3W modules use voting technology to provide improved recognition results. The PLUS2W and PLUS3W modules use the results from one or more of FRX, MOR and MTX modules according to the trade-off. With either of these two voting modules, the accuracy is considerably better, but the recognition may need significantly more time than any single module.

Suspicious Marking

With these modules, the suspicious character and word marking feature is different from that used in MOR, MTX or FRX. These modules do not mark characters as suspicious if all the voting modules provided the same recognition result, even if they were suspiciously recognized in any of them. Consequently, there are likely to be fewer words marked as non-dictionary.

Character Attributes

The omnifont recognition module can detect and transmit character attributes: bold, italic or underlined text (or any combination of them). It can also detect and transmit character size, and can classify font types into three broad categories: serif, sans serif and monospaced.