Thomas Längle
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Black plastic identification by hyperspectral imaging in mid-wave infrared Open
Sensor-based sorters operating in the Near-Infrared (NIR) range are commonly used to sort post-consumer plastics. However, this method fails, when the NIR light is fully absorbed by carbon black pigments, which are present in black plastic…
Bayesian Optimization of Process Parameters of a Sensor-Based Sorting System using Gaussian Processes as Surrogate Models Open
Sensor-based sorting systems enable the physical separation of a material stream into two fractions. The sorting decision is based on the image data evaluation of the sensors used and is carried out using actuators. Various process paramet…
A Comparative Evaluation of Vision Language Models for Waste Classification in Few-Shot Settings Open
Efficient waste classification is essential for sustainable waste management systems. Accurate sorting can significantly enhance recycling efforts and reduce pollution. However, traditional computer vision methods often require large, anno…
Simultaneous measurement of surface geometry and film thickness distribution by retroreflex ellipsometry Open
A holistic approach to determine the surface orientation and film thickness for nonplanar isotropic three-phase systems (ambient-film-substrate) by retroreflex ellipsometry is presented. After scanning the surface of the sample, the ellips…
Noise analysis of a synthetically rendered scene in sensor-realistic image simulation Open
This paper investigates how the noise characteristics of synthetically generated camera images correspond to those of a real camera. We determine the photon transfer curve from a set of rendered images of a static scene. Furthermore, we pr…
Sensor-based characterization of construction and demolition waste at high occupancy densities using synthetic training data and deep learning Open
Sensor-based monitoring of construction and demolition waste (CDW) streams plays an important role in recycling (RC). Extracted knowledge about the composition of a material stream helps identifying RC paths, optimizing processing plants a…
A Survey of the State of the Art in Sensor-Based Sorting Technology and Research Open
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Regression-based Age Prediction of Plastic Waste using Hyperspectral Imaging Open
In order to enable high quality recycling of polypropylene (PP) plastic, additional classification and separation into the degree of degradation is necessary. In this study, different PP plastic samples were produced and degraded by multip…
Detecting Tar Contaminated Samples in Road-rubble using Hyperspectral Imaging and Texture Analysis Open
Polycyclic aromatic hydrocarbons (PAH) containing tar-mixtures pose a challenge for recycling road rubble, as the tar containing elements have to be extracted and decontaminated for recycling. In this preliminary study, tar, bitumen and mi…
Sensitivity enhanced glucose sensing by return-path Mueller matrix ellipsometry Open
Diabetes is a worldwide public health problem. According to the survey of the Robert Koch Institute, in Germany, at least 7.2 percent population (aged between 18 to 79 years) have diabetes. Therefore, the demand for glucose monitoring is i…
View article: Simulation study and experimental validation of a neural network-based predictive tracking system for sensor-based sorting
Simulation study and experimental validation of a neural network-based predictive tracking system for sensor-based sorting Open
Sensor-based sorting offers cutting-edge solutions for separating granular materials. The line-scanning sensors currently in use in such systems only produce a single observation of each object and no data on its movement. According to rec…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 90 vs. 10 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 90 vs. 10 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s and a Mixing Ratio of 90 vs. 10 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s and a Mixing Ratio of 90 vs. 10 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s
Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s Open
This data set comprises images of bulk material of brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfaff, Christ…
View article: Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s
Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s Open
This data set comprises images of bulk material of brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfaff, Christ…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 90 vs. 10 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 90 vs. 10 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s
Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s Open
This data set comprises images of bulk material of sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfa…
View article: Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s
Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s Open
This data set comprises images of bulk material of sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfa…
View article: Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s
Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s Open
This data set comprises images of bulk material of brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfaff, Christ…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s and a Mixing Ratio of 95 vs. 5 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s and a Mixing Ratio of 95 vs. 5 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s
Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s Open
This data set comprises images of bulk material of sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfa…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 95 vs. 5 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 95 vs. 5 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 75 vs. 25 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 75 vs. 25 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s
Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s Open
This data set comprises images of bulk material of brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfaff, Christ…
View article: Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s
Images of Construction and Demolition Waste Consting of Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s Open
This data set comprises images of bulk material of brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfaff, Christ…
View article: Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s
Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s Open
This data set comprises images of bulk material of sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfa…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 90 vs. 10 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 10 g per s and a Mixing Ratio of 90 vs. 10 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…
View article: Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s
Images of Construction and Demolition Waste Consting of Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 15 g per s Open
This data set comprises images of bulk material of sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, Florian Pfa…
View article: Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 50 vs. 50 %
Images of Construction and Demolition Waste Consting of Brick and Sand-lime Brick Transported on a Conveyor Belt - Recording with a Mass Flow of 20 g per s and a Mixing Ratio of 50 vs. 50 % Open
This data set comprises images of bulk material of brick and sand-lime brick on a conveyor belt. The images were recorded on the small-scale optical belt sorter Tablesort. A thorough description of the system can be found in Georg Maier, F…