Rockwell Automation 5370-OCR2 PAK - Manual (Page 36)

A–B
5
Chapter
5–1
Creating and Editing Fonts
This chapter describes how to:
•
Create and edit fonts
•
Teach characters
•
Test fonts
Important: Before teaching new characters, you should have set the
following as described in Chapter 4.
•
Entered a Font Name
•
OCR Tool Window
•
Threshold/Filter
•
Character Size
Each OCR Tool uses one OCR Font, which is a file of character patterns
used to perform OCR or OCV. Different OCR Tools can contain different
fonts, or they can share a single font if they are to inspect the same type
of text.
A font can contain any or all of the characters available on the pop-up
keyboard, except the space character, underscores and the question mark.
The size of the font file, and the amount of on-line memory used when the
font is loaded, depends on the number of characters trained. When the
CVIM2 system goes on-line, only those fonts currently used by OCR Tools
are loaded into memory.
Font files can be stored on any of the CVIM2 storage devices. Normally, a
font should be stored on the EE: device when it is first created. Once the
font is fully trained, it can be moved to another storage device such as V2:
which has a larger capacity. If a font file is moved to a different device, the
Font Name must be changed in all OCR Tools that use the font, to reflect the
new device name.
Chapter Objectives
OCR Fonts