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Image processing
3.3 Options for image acquisition and image processing
● Inconsistent application of the ink
● Inadequate contrast due to a combination of ink color and background color
3.3
Options for image acquisition and image processing
Image acquisition options
The image acquisition options of the optical reader were developed for a wide range of
applications.
There are three different ways of controlling image acquisition and processing:
● Individual trigger
● Auto-trigger
● Scan
Architecture of the internal processing sequence
The principle underlying the processing performed by the optical reader is a buffered
processing method in three steps:
● Image acquisition (including recording buffer)
● Decoding (including result buffer)
● Result output
Between each processing step, the optical reader has a buffer and you can configure the
size of the buffer depending on the application.
This allows the ideal throughput to be achieved in every processing step, resulting in the
maximum overall throughput for the optical reader and flexible application.
3.3.1
Image acquisition option "Individual trigger"
How it works
With this setting, one image is acquired per trigger followed by one read.
If several objects need to be acquired in a very short time, acquired images can be buffered
before they are processed.
To allow this, the images can be buffered and the image buffer size can be selected:
● SIMATIC MV500 S and SIMATIC MV500 H can buffer 50 images.
● SIMATIC MV500 U / X can buffer 30 images.
The optical reader transfers the results of the reads as soon as it has processed them.
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Operating Instructions, 05/2019, C79000-G8976-C494-02
SIMATIC MV500
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