Image processing
4.3 Optical character recognition with "Text-Genius" and "Text-Genius Plus" (SIMATIC MV440 only)
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
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4.3 Optical character recognition with "Text-Genius" and "Text-Genius
Plus" (SIMATIC MV440 only)
Optical Character Recognition and Optical Character Verification
"Optical character recognition" (OCR) allows not only machine-readable codes but also
human-readable plain text to be recognized and machine-processed.
With "Optical Character Verification" (OCV), "the plain text read can also be compared with
target specifications and deviations in the read result detected. The readability of the text can
be accessed and rejected using a threshold value for the reading quality. However, this OCV
functionality is very different from a printing inspection, which involves comparison of the
printed image with a template. This task is not covered by the OCV functionality.
4.3.1 Text-Genius and Text-Genius Plus
There are two high-performance character recognition processes (Page 391) which can be
activated as required depending on the application requirements.
Text-Genius Plus offers all the benefits of Text-Genius character recognition plus additional
performance features.
4.3.2 Performance features of Text-Genius character recognition
Highlights of Text-Genius character recognition
● Flexible reading of multiple fonts such as OCR A, OCR B, without time-consuming
training
● Fast and reliable reading (up to 1 000 reads per minute)
● Lines of plain text and machine-readable codes can be flexibly combined and read in one
single image.
● Automatic text localization
● Automatic line detection (up to 12 x 15 lines)
● Flexible reading of character heights of between 15 and 220 pixels
● Reading of up to 12 image regions with independent settings
● Reading of mirrored, rotated and inverted text
● Numerous filter and comparison functions
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