User`s manual

405-00026-00iNspect Express User’s Manual
126 Rev 1600; 12 July 2010
Lighting – In most cases you will need special lighting that ‘amplifies’ the elements of the part
that you want to inspect and ‘attenuates’ elements that you don’t want to inspect. Proper lighting
makes inspection faster and more accurate. Poor or inappropriate lighting is a major cause of
failure in machine vision inspection systems.
Light Ring – a ring or circle of Light Emitting Diodes or other light sources in a circle. A light
ring is usually placed around the camera lens, to light up the camera’s field of view.
Pixel – abbreviation for “picture element”, a single “point” in a digitized image.
Progressive Scan – a non-interlaced or single field camera that usually has an image size similar
to the RS170 and CCIR standard. Lines are scanned sequentially, instead of the interlaced lines in
the even/odd field method of broadcast standard RS170 and CCIR cameras
Rejection Delay – The time between when an object is in front of the presence detector, or part-
in-place sensor, and when the object is in front of the rejector or “kicker”. Also called Decision
Delay.
Rejection Delay Time or
Detector
Kicker
direction
of motion
Decision Delay Time
ROI – “Region-Of-Interest” or a smaller area inside the image area.
Score – a measure of the similarity between the entire trained area and the entire test area. Score is
calculated by subtracting the trained area from the test area and calculating the variance. A score
of 100% means a perfect match.
Staging – Staging holds the part to be inspected at a precise location in front of the Appliance’s
camera so it can ‘see’ the part. Putting the part in a set and known location allows the Appliance
to quickly find and inspect the part. You may need a Part-in-Place sensor that tells the Appliance
when the part is in its place in front of the camera.
Strobe – A light that gives an extremely short extremely bright flash. Strobe Lights were first
developed to freeze fast moving objects for still photography on film.
Photo-electric Sensor – A light-sensitive device that responds to a change in light, usually re-
flected light but sometimes direct light. These can be visible light or infrared light.