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1	Multi-wavelength laser line profile sensing for agricultural applications Strothmann, Wolfram 03 November 2016 (has links) This dissertation elaborates on the novel sensing approach of multi-wavelength laser line profiling (MWLP). It is a novel sensor concept that expands on the well-known and broadly adopted laser line profile sensing concept for triangulation-based range imaging. Thereby, the MWLP concept does not just use one line laser but multiple line lasers at different wavelengths scanned by a single monochrome imager. Moreover, it collects not only the 3D distance values but also reflection intensity and backscattering of the laser lines are evaluated. The system collects spectrally selective image-based data in an active manner. Thus, it can be geared toward an application-specific wavelength configuration by mounting a set of lasers of the required wavelengths. Consequently, with this system image-based 3D range data can be collected along with reflection intensity and backscattering data at multiple, selectable wavelengths using just a single monochrome image sensor. Starting from a basic draft of the idea, the approach was realized in terms of hardware and software design and implementation. The approach was shown to be feasible and the prototype performed well as compared with other state-of-the-art sensor systems. The sensor raw data can be visualized and accessed as overlayed distance images, point clouds or mesh. Further, for selected example applications it was demonstrated that the sensor data gathered by the system can serve as descriptive input for real world agricultural classification problems. The sensor data was classified in a pixel-based manner. This allows very flexible, quick and easy adaptation of the classification toward new field situations. Laser triangulation Spectral analysis 3D sensing Image processing Classification Agricultural sensing Machine learning Model adaptation 54.72 - Künstliche Intelligenz 48.20 - Landtechnik, Forsttechnik 53.54 - Optoelektronik ddc:000
2	Göttinger Mähhäcksler Tritucap und Forstmulcher- Nicht brennende Flächenvorbereitung am Beispiel der Zona Bragantina, Nord-Ost-Amazonien, Brasilien / Göttingen's wood chopper Tritucap and forestry mulcher- fire-free land preparation in the Bragantina region in North-Eastern-Amazonia, Brasil Block, Andreas 27 May 2004 (has links) No description available. 630 Landwirtschaft Veterinärmedizin Agricultural Sciences Brandrodung Mulch tropische Agroforstsysteme Häcksler Forstmulcher Sekundärvegetation Regenwald Brasilien Slash-burning mulch tropical agroforestry systems chopper forestry mulcher secondary vegetation rainforest Brazil 48.20 Landtechnik Forsttechnik YA 000: Land- und Forstwirtschaft
3	Entwicklung eines selbstschneidenden Häckslerkonzeptes zur vollmechanisierten Entbuschung von Offenflächen / Development of a Self-Cutting Chipper Concept for Fully-Mechanised Shrub Clearance in Open Landscapes Wegener, Tim 21 July 2011 (has links) No description available. 630 Landwirtschaft, Veterinärmedizin Land- und Forstwirtschaft (PPN621302791) Sonstiges (PPN647217600) Agricultural Sciences Landschaftspflege Entbuschung Schneckenhäcksler Verbuschung Offenflächen landscape conservation shrub clearance spiral chipper bush encroachment open landscapes 48 Land- und Forstwirtschaft 48.20 Landtechnik Forsttechnik

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