Surface defect imaging challenge at PPMA Show

27 July 2015

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Surface defect imaging challenge at PPMA ShowA number of different demonstration systems will showcase Stemmer Imaging’s extensive range of vision technology products and expertise at the PPMA Show. This will include many aspects of package inspection; high-speed inspection and visitors are invited to bring their own samples to see high-resolution surface defect detection in action.

Stemmer Imaging’s novel Trevista Surface 50 inspection system is supplied complete with structured diffuse illumination, lens, software, PC and a 5 MPixel Genie TS camera from Teledyne DALSA. Using a patented “shape from shading” technology, information on the three-dimensional shape of an object can be deduced from the shading of its surfaces. This allows defects of just a few microns diameter and depth to be detected on a variety of material surfaces. Visitors to the show can bring their own samples along to put this to the test.

The package inspection demonstrator will illustrate a wide variety of inspection applications including OCR and print quality as well as 3D inspection using laser triangulation. It features cameras from a number of different suppliers, including Allied Vision, Teledyne DALSA and JAI. The cameras, with resolutions ranging from VGA to 5 Mpixels and operating at different frame rates to suit the particular inspection are located on a continuous conveyor system.

Also on show will be a high-speed imaging system which will show image sequences produced from a miniature roller coaster system. The sequences are generated from high-speed images acquired into the ring buffer of Common Vision Blox, Stemmer Imaging’s own hardware-independent imaging toolkit.

Stemmer Imaging will be on Stand A44 at the PPMA Show, which takes place at the UK's NEC from 29 September to 1 October 2015. For more information about the company’s range of vision technology products please visit

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