Search for dissertations about: "Self-Calibration"

Showing result 1 - 5 of 9 swedish dissertations containing the word Self-Calibration.

  2. 1. Self-calibration and direct georeferencing in terrestrial laser scanning

    Author : Yuriy Reshetyuk; Lars E. Sjöberg; Milan Horemuz; Hansjörg Kutterer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; terrestrial laser scanning; self-calibration; direct georeferencing; error sources; Surveying; Lantmäteri;

    Abstract : An important step in data processing from terrestrial laser scanning (TLS) is georeferencing, i.e. transformation of the scanner data (point clouds) into a real world coordinate system, which is important for their integration with other geospatial data. READ MORE

  4. 2. Localization using Distance Geometry : Minimal Solvers and Robust Methods for Sensor Network Self-Calibration

    Author : Martin Larsson; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; localization; TDOA; TOA; trilateration; multilateration; distance geometry; registration; sensor network self-calibration;

    Abstract : In this thesis, we focus on the problem of estimating receiver and sender node positions given some form of distance measurements between them. This kind of localization problem has several applications, e.g. READ MORE

  5. 3. Development of ultra-precision tools for metrology and lithography of large area photomasks and high definition displays

    Author : Lars Peter Ekberg; Lars Mattsson; Lars Stiblert; Richard Leach; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultra precision 2D metrology; LCD-display; OLED-display; nm-resolution; random phase measurement; large area; photomask; acousto-optic deflection; self-calibration; Z-correction; absolute accuracy; uncertainty.; SRA - Production; SRA - Produktion;

    Abstract : Large area flat displays are nowadays considered being a commodity. After the era of bulky CRT TV technology, LCD and OLED have taken over as the most prevalent technologies for high quality image display devices. READ MORE

  6. 4. Computer Vision without Vision : Methods and Applications of Radio and Audio Based SLAM

    Author : Kenneth John Batstone; Mathematical Imaging Group; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TOA; Self-Calibration; Localization; 802.11mc; Round-Trip Time;

    Abstract : The central problem of this thesis is estimating receiver-sender node positions from measured receiver-sender distances or equivalent measurements. This problem arises in many applications such as microphone array calibration, radio antenna array calibration, mapping and positioning using ultra-wideband and mapping and positioning using round-trip-time measurements between mobile phones and Wi-Fi-units. READ MORE

  7. 5. Mapping and Merging Using Sound and Vision : Automatic Calibration and Map Fusion with Statistical Deformations

    Author : Gabrielle Flood; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Time of arrival; TOA; Time-difference of arrival; TDOA; Subsample methods; Uncertainty measure; Constant offset; RANSAC; Map merging; Map fusion; Change detection; Collaborative SLAM; Structure from motion; SfM; SLAM; Mapping; Localisation; Registration; Sparse maps; Point clouds;

    Abstract : Over the last couple of years both cameras, audio and radio sensors have become cheaper and more common in our everyday lives. Such sensors can be used to create maps of where the sensors are positioned and the appearance of the surroundings. READ MORE