Search for dissertations about: "coordinate precision accuracy"

Showing result 1 - 5 of 6 swedish dissertations containing the words coordinate precision accuracy.

  2. 1. 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

  4. 2. Investigation and calibration of pulsed time-of-flight terrestrial laser scanners

    Author : Yuriy Reshetyuk; Lars E. Sjöberg; Stig-Göran Mårtensson; KTH; []
    Keywords : terrestrial laser scanning; error sources; calibration; coordinate precision accuracy;

    Abstract : This thesis has two aims. The first one is the investigation and analysis of the errors occurring in the measurements with pulsed time-of-flight (TOF) terrestrial laser scanners (TLS). A good understanding of the error sources and the relationships between them is necessary to secure the data accuracy. READ MORE

  5. 3. 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

  6. 4. A new computed tomography method for evaluation of orthopedic implants : applied to the acetabular cup

    Author : Lotta Olivecrona; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: Two major long term complications after total hip arthroplasty (THA) is aseptic loosening and wear of the implant. In the clinical situation a detection level of approximately 1 mm is desirable. However, conventional planar radiographs used in clinical routine cannot reach this level. READ MORE

  7. 5. Calibration and orientation of airborne image and laser scanner data using GPS and INS

    Author : Helén Burman; KTH; []
    Keywords : ;

    Abstract : GPS and INS measurements provide positions and attitudesthat can be used for direct orientation of airborne sensors.This research improves the final results by performingsimultaneous adjustments of GPS, INS and image or laser scannerdata. READ MORE