Orbotech Symbion S36, Руководство программиста

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© Orbotech 2005 Symbion™ Programmer Guide 79
Draft - Confidential
OCR Tips
The following tips are offered to get the best performance from the OCR
Engine;
•
The OCR Inspection area should be defined as small as possible to avoid
any disturbing features (for example pin ends, polarity marks)
These features can make the inspection inconsistent during production
inspection
•
For laser etched text use all Flat Diagonal lights to achieve the best
contrast, for standard prints Diffuse is normally best
•
Before manipulating any other parameters or training any characters
ensure the best possible contrast by adjusting the Brightness Offset and
Lighting
Use the Acquire button to check any adjustments to
Brightness Offset
or Lighting give a stable result
•
Once the best contrast is achieved apply filters and other parameters as
necessary, and only then train un-recognized characters
Changing parameters can affect the thickness of characters and
training these characters too early will not be useful