Object detection in colour plus identification united in one device.
Typical VISOR® Allround
he VISOR® Allroundis the latest member in the VISOR® family and a real multi-talent among vision sensors. In the new allround version, the device
unites the functions of the object sensor (i.a. calibration, pattern matching, contour, calliper, BLOB) with
the powerful tools of the code reader (bar code, datamatrix and optical character recognition).
In addition to the monochrome version, the VISOR® Allround is also available as a colour version with up to 1.3 megapixel.
Thus additional “Detectors” are available for colour evaluation. Even the subtlest nuances in shade can be reliably detected.
The relevant object colours, for example, can be taught-in quite simply by push of a button or – thanks to the intuitive
colour histogram – set graphically for each channel in the colour space. The authorised colour tolerances can be defined by the user.
Raised or recessed object details – such as embossed digits and characters on a credit card – are difficult to detect with standard
image processing methods. Even use of lateral lighting generally results in poorly identifiable contours due to overexposure and shadows.
VISOR® Allround Professional remedies this situation with the new multishot function.
With the help of virtual color filters, which emphasize the relevant area of the image and suppress interfering image parts, inspection tasks can now be solved even more simply and reliably with maximum contrast. The virtual filters can be configured individually for each detector. Compared to optical color filters this results in a much higher flexibility.
Many applications can be solved more easily by defining any color as software color filter and simulating
a lighting or a filter with a specific wavelength:
- OCR reading on multicolored backgrounds
- Substrates with UV excitation shine in a defined color
- Edges are highlighted more clearly (e.g. in part detection tasks)