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. The solution comes in the shape of SensoPart’s VISOR® vision sensor series with the new multishot function.
Contours now stand out clearly so that raised or recessed letters and digits can be easily read, e.g. using the vision sensor’s OCR function. Other application examples for VISOR® Multishot include the reading of data matrix codes moulded directly into plastic surfaces, detection of damage such as dents or scratches, or the recognition of raised adhesive beads on the same colored background.
This technology can even be used exclusively with the VISOR®’s internal lighting system – a feature which makes the sensor unique on the market. External lighting can be dispensed with altogether when detecting small details, particularly from a short distance. This reduces complex cabling and saves time, space and of course money.
Changing background colors – a frequent occurrence in the packaging industry – can be eliminated entirely from image processing thanks to multishot technology. Analysis is then based solely on detected height differences.
Finally, a VISOR® equipped with the multishot function can also take and analyze a picture with a standard lighting configuration, in addition to a height image, as it is possible to simply switch between multishot and standard lighting at any time. This therefore also enables part inspection with traditional image processing tools, such as pattern matching, contour detection, distance measurement or code reading.
Optional lighting accessories are available; the multishot function is available in all new VISOR® devices in the version ‘Allround Professional’.
The VISOR® vision sensor with Multishot function was recognized by the judges of the annual Vision Systems Design Innovators Awards program. The judging panel consisted of esteemed experts from system integrator and end-user companies.
SensoPart was honored with a silver level award. “Using Multishot, you can find scratches on smooth surfaces, and read embossed codes on multi-colored surfaces that were unreadable with conventional tools. SensoPart is dedicated to helping our customers solve their inspection problems. Multishot is the first algorithm of this kind available in an easily configurable Vision Sensor.”, said Dan Simmons, sales director of SensoPart Inc.
