When Quality Counts

Every image captured by the inspection camera(s) contains information in the form of light intensity levels, or levels of gray, varying in value from 0 (black) to 255 (white). The frequency of these gray levels contains information valuable for inspection.

The image being examined has a very low contrast. A foreign object may show up as dark gray against a gray background. Therefore, the system must be capable of distinguishing between small differences in density.

As the product passes through the low energy x-ray beam and detector, several readings record changes in density. The systems computer monitors the data and once a contaminant is found, the package or product is tracked until it reaches the reject device where it is automatically removed. The inspection process is continuous, and the defective units are automatically removed from the production line. The system can interface with a conveyor or a pipeline inspection point and runs automatically without an operator.

Nationwide Inspection Systems, Inc. has developed an extensive library of software for our vision systems (NIS Computer Systems®) to fit a variety of applications for the automatic detection of contaminants in products. With the use of NIS Computer Systems designed for exclusive use on our x-ray inspection systems we can accommodate various products with various properties.