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Dive into the research topics where Steffen Lerm is active.

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Featured researches published by Steffen Lerm.


Proceedings of SPIE | 2013

Time efficient methods for scanning a fluorescent membrane with a fluorescent microscopic imager for the quality assurance of food

Steffen Lerm; Silvio Holder; Mathias Schellhorn; Peter Brückner; Gerhard Linß

An important part of the quality assurance of meat is the estimation of germs in the meat exudes. The kind and the number of the germs in the meat affect the medical risk for the consumer of the meat. State-of-the-art analyses of meat are incubator test procedures. The main disadvantages of such incubator tests are the time consumption, the necessary equipment and the need of special skilled employees. These facts cause in high inspection cost. For this reason a new method for the quality assurance is necessary which combines low detection limits and less time consumption. One approach for such a new method is fluorescence microscopic imaging. The germs in the meat exude are caught in special membranes by body-antibody reactions. The germ typical signature could be enhanced with fluorescent chemical markers instead of reproduction of the germs. Each fluorescent marker connects with a free germ or run off the membrane. An image processing system is used to detect the number of fluorescent particles. Each fluorescent spot should be a marker which is connected with a germ. Caused by the small object sizes of germs, the image processing system needs a high optical magnification of the camera. However, this leads to a small field of view and a small depth of focus. For this reasons the whole area of the membrane has to be scanned in three dimensions. To minimize the time consumption, the optimal path has to be found. This optimization problem is influenced by features of the hardware and is presented in this paper. The traversing range in each direction, the step width, the velocity, the shape of the inspection volume and the field of view have influence on the optimal path to scan the membrane.


Nachrichten Aus Der Chemie | 2009

Vor Ort spektroskopieren

Peter Brückner; Steffen Lerm

Ein Miniaturspektrometer erfasst bis zu vier Messstellen gleichzeitig und unabhangig voneinander. Damit lassen sich Referenzmessungen durchfuhren, etwa fur Materialuntersuchungen oder in der Lebensmitteluberwachung.


Archive | 2012

Method and apparatus for the optical evaluation of harvested crop in a harvesting machine

Peter Brueckner; Steffen Lerm; Daniel Garten; Silvio Holder


Proceedings of 15th International Conference MECHATRONIKA | 2012

Concepts of a scanning hardware platform for high-resolution image processing with Lab-on-a-chip analysis

Steffen Lerm; Silvio Holder; André Göpfert; Richard Fütterer; Gerhard Linß


Archive | 2012

Method and assembly for optically evaluating harvested goods in a harvesting machine

Peter Brückner; Steffen Lerm; Daniel Garten; Silvio Holder


Archive | 2009

A NEW PROCEDURE FOR DETECTING DEVIATIONS BEHIND AN UNDERCUT BY USING OPTICAL COORDINATE MEASURING MACHINES

Matthias Rückwardt; André Göpfert; Steffen Lerm; Maik Rosenberger; Mathias Schellhorn


Measurement | 2015

High resolution acquisition and processing of fluorescent microscopic images for quality assurance of food

Peter Brueckner; Richard Fuetterer; Silvio Holder; Steffen Lerm; Alexander Schlegel; Patrick Werner


Archive | 2013

Verfahren und Anordnung zur optischen Beurteilung von Erntegut in einer Erntemaschine

Peter Brückner; Steffen Lerm; Daniel Garten; Silvio Holder


Machine Learning and Applications: An International Journal | 2016

Image Based Recognition - Recent Challenges and Solutions Illustrated on Applications

Daniel Garten; Katharina Anding; Steffen Lerm


Proceedings of 15th International Conference MECHATRONIKA | 2012

Evaluation of a frame bending measuring system for large diameters in wind power industry

André Göpfert; Steffen Lerm; Matthias Rückwardt; Marc Preissler; Gerhard Linß

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André Göpfert

Technische Universität Ilmenau

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Gerhard Linß

Technische Universität Ilmenau

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Maik Rosenberger

Technische Universität Ilmenau

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Mathias Schellhorn

Technische Universität Ilmenau

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Matthias Rückwardt

Technische Universität Ilmenau

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Gerhard Linss

Technische Universität Ilmenau

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