The confocal chromatic triangulation (CCT) sensor
© Fraunhofer IOSB
The confocal chromatic triangulation (CCT) sensor was developed to measure a three-dimensional surface topography. Similar to a line scan camera, the target is scanned and the height information is measured directly

CCT Sensor - fast 3D measurement of surfaces

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Food quality assessment
© Fraunhofer IOSB
Food is checked and sorted at various points in the process chain: seeds after the harvest, grapes on arrival at the winery, coffee as green and roasted coffee, dried mushrooms before packaging, etc.

Food quality through sorting systems

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Cognitive Agriculture, Fraunhofer IESE
© iStock.com/wundervisuals; bearbeitet durch Fraunhofer IESE

Agriculture - from the field to the consumer

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The bulk material flies off a conveyor belt at a speed of about 3 m/s and is recorded by a colour line scan camera. Behind the camera line of sight, the unwanted objects are blown out of the material stream by individually controlled nozzles while still in flight.
© Fraunhofer IOSB
The bulk material flies off a conveyor belt at a speed of about 3 m/s and is recorded by a colour line scan camera. Behind the camera line of sight, the unwanted objects are blown out of the material stream by individually controlled nozzles while still in flight.

Sorting systems for bulk goods and recycling

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We develop systems for automated visual inspection

Department Visual Inspection Systems (SPR)

The Visual Inspection Systems department develops and delivers systems for automated visual inspection, performing tasks such as sorting bulk goods, inspecting food and providing quality assurance for transparent and reflecting materials.

Our work revolves around using optronic sensors and machine vision to characterize and inspect various materials and objects. We work with high-resolution line scan cameras of various types (color, grayscale, UV and imaging NIR), area scan cameras, laser scanners, hyperspectral technology and inexpensive NIR point spectroscopy sensors. The imaging equipment is customized for each specific task and relies heavily on folded beam paths and LED fash illumination. Our expertise also includes high-performance system architectures with specially developed framegrabbers and image exploitation algorithms; these are essential given the inspections’ high throughput rates and the need to build databases of reference data. Our solutions are currently in use in a great number of factories, where they perform tasks such as quality control.

We develop systems that sort bulk goods automatically. They are used in recycling (e.g. glass, plastic, construction and demolition waste), mining (minerals) and the food industry (for purifying coffee, tea, grains, grapes and other products). Other systems we have designed can inspect
surfaces for defects, inspect and classify transparent materials of all shapes, measure the color of granulates and inspect tablet blister packs. Currently, we are working on a mobile food scanner that uses NIR spectroscopy to check the composition, freshness and quality of foodstuffs.

Our research groups

 

Sorting of bulk goods and recycling

Sorting of bulk goods involves the detection of foreign bodies and sorting for bulk goods during industrial processing. A distinction is made here between food and non-food.

 

Inspection of complex products

Quality testing by surface inspection: pane inspection, paint inspection and layer density measurements on transparent materials of any shape in manufacturing processes. 

 

Food quality and agriculture

The value chain starts with agricultural production, but in perspective includes further process steps and processing steps. The use of spectral information beyond the R-G-B facilitates classification.

Department news

 

Activities 2021

Here you will find all the information on trade fairs, events and conferences with the participation of the SPR department.

 

Press & media

  • Press releases
  • visIT topic booklets

Further information on the Visual Inspection Systems department

 

Laboratory

With our equipment we characterise the separation properties of your sample.

 

 

Publications & patents

 

Jobs

Apply for a job with us and take the chance to become part of our team in the dynamic research environment of a renowned institute.

(German only)

 

 

Interested in cooperation?

Are you interested in a cooperation with our department or do you have questions about our current research topics? Then get in touch with us!