Rockwell Automation 5370-OCR2 PAK - Manual (Page 32)

Chapter 4
OCR Tool Configuration
4–13
Rescale options affect both manual and automatic sizing:
Rescale
Select Rescale when Character Size is first set for a new font or when
adjustments are made such as a line changeover, where the character
size changes. If the Rescale option is shaded, you must add or select a
font in the OCR Tool Edit Panel first.
Rescale for a New Font
When Rescale is selected, both the X and Y scale factors are set and the
aspect ratio of X to Y (width to height) is stored with the font. The
largest character of the font should be present in the inspection window.
Rescale for an Existing Font
When Rescale is selected, the Character Size is set based upon the
height measurement only. The aspect ratio of X to Y (width to height)
remains unchanged for the font. The widest character does not have to
be in the OCR inspection window. This enables you to teach a font
off-line and then reconfigure the tool’s Character Size to match that of
the inspected characters.
Define XY
Select Define XY when the camera aspect ratio (horizontal / vertical
resolution) is changed for an existing font. When Define XY is
selected, both the X and Y scale factors are set. The largest character in
the font should be present in the OCR inspection window. Select
Rescale after setting the Character Size with the Define XY option.
This will store the aspect ratio with the font and set Rescale as the
default Character Size option.