VI User Manual - 第277页
Optical Character Verification Vision 2007 4.10 User Manua l Rev 01 8 - 15 8.5 Definitions 8.5.1 OCV versus OCR ? 8.5.1.1 OCV is for Optica l Character Verification We already know the string. We only pe rform a verifica…
Optical Character Verification
8 - 14 Vision 2007 4.10 User Manual Rev 01
8.4 Text in production mode
In production mode, in the case of a .tst file with text object joined to a component and with text object
alone, you can have the following screen:
This column gathers the result of the text joined to a component.
This column gathers the result of the text alone (it is not joined to the component).
Optical Character Verification
Vision 2007 4.10 User Manual Rev 01 8 - 15
8.5 Definitions
8.5.1 OCV versus OCR ?
8.5.1.1 OCV is for Optical Character Verification
We already know the string. We only perform a verification of each character in the string.
8.5.1.2 OCR is for Optical Character Recognition
We don’t know what to read. OCR is to recognize characters inside a string.
8.5.2 Confusion characters
Characters returning a similar score when performing a PatMax with the same model such has
B and 8.
8.5.3 Overlap
An amount by which model areas can overlap. If models overlap more than this amount, they are
considered to be the same model, and only 1 of them will be returned from a search operation.
8.5.4 Clutter
Extraneous features in a runtime image that are not part of the trained model.