Subject

Now showing items 1-13 of 13

    • The automated detection and analysis of gravitational microlensing events 

      Van Rooyen, Ruby (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: In this thesis we addressed some issues concerning the automation of the detection, processing and the analysis of gravitational microlensing events, which are currently being used in the search for ...

    • Automated stratigraphic classification and feature detection from images of borehole cores 

      Van der Walt, Stefan Johann (Stellenbosch : University of Stellenbosch, 2005-03)
      This thesis describes techniques proposed for analysing images of borehole cores. We address two problems: firstly, the automated stratigraphic classification of cores based on texture and secondly, the location of thin ...

    • Automating a labour performance measurement and risk assessment: an evaluation of methods for a computer vision based system 

      Van Blommestein, Donald Lloyd (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: This thesis brings together productivity and risk assessments through innovative design, development and evaluation of a unique system for retrieving and analysing data. In the past, although the link ...

    • Concise analysis and testing of a software model of a satellite remote sensing system used for image generation 

      Van der Westhuizen, Lynette (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: The capability of simulating the output image of earth observation satellite sensors is of great value, as it reduces the dependency on extensive field tests when developing, testing and calibrating ...

    • Enhancement of cooling tower performance by manipulation of rain zone drop size 

      Oosthuizen, Henry Randolph (Stellenbosch : Stellenbosch University, 1995-03)
      AFRIKAANSE OPSOMMING: Die moontlikheid om die warmteoordrag in die reensone van 'n natuurlike trek nat koeltoring te vcrbeter deur die gemiddelde druppel diameter van die sproei te verminder is ondersoek. Eksperimentele ...

    • Estimating the Pen Trajectories of Static Handwritten Scripts using Hidden Markov Models 

      Nel, Emli-Mari (Stellenbosch : University of Stellenbosch, 2005-12)
      Individuals can be identified by their handwriting. Signatures are, for example, currently used as a biometric identifier on documents such as cheques. Handwriting recognition is also applied to the recognition of ...

    • Feature tracking and pattern registration 

      Wagener, Dirk Wolfram (Stellenbosch : Stellenbosch University, 2003-11)
      ENGLISH ABSTRACT: The video-based computer vision patient positioning system that is being developed at iThemba Laboratories, relies on the accurate, robust location, identification and tracking of a number of markers on ...

    • Fluoroscopy based needle-positioning system for percutaneous nephrolithotomy procedures 

      Conradie, Jean-Pierre (Stellenbosch : Stellenbosch University, 2008-12)
      A fluoroscopy-guided needle-positioning system is designed and tested as a first prototype for aiding urologists in gaining fast, accurate and repeatable kidney calyx access during a PCNL procedure while also reducing ...

    • An image compression system for LEO satellites 

      Kriegler, Eduard (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: Data volumes produced by the next generation of earth observation sensors have increased greatly in recent years. Sensors are generating more data than can be easily stored onboard satellites and ...

    • Image processing techniques for sector scan sonar 

      Hendriks, Lukas Anton (Stellenbosch : University of Stellenbosch, 2009-12)
      ENGLISH ABSTRACT: Sonars are used extensively for underwater sensing and recent advances in forward-looking imaging sonar have made this type of sonar an appropriate choice for use on Autonomous Underwater Vehicles. The ...

    • Image texture analysis for inferential sensing in the process industries 

      Kistner, Melissa (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: The measurement of key process quality variables is important for the efficient and economical operation of many chemical and mineral processing systems, as these variables can be used in process monitoring ...

    • Interactive recognition of hand-drawn circuit diagrams 

      Dreijer, Janto F. (Stellenbosch : University of Stellenbosch, 2006-12)
      When designing electronic circuits, engineers frequently make hand-drawn sketches of circuits. These are then captured with a computerised design. This study aims to create an alternative to the common schematic ...

    • Structure from motion estimation using a nonlinear Kalman filter 

      Venter, Chris (Christian Johannes) (Stellenbosch : Stellenbosch University, 2002-12)
      ENGLISH ABSTRACT: Structure from Motion is defined as the problem of extracting the 3d motion of a camera moving through a scene, as well as the 3d structure of the scene, from the image sequence produced by the camera ...