Subject

Now showing items 1-12 of 12

    • An autonomous, omnidirectional, digital, borehole imaging system 

      Sindle, Timothy Grant (Stellenbosch : Stellenbosch University, 2005-04)
      ENGLISH ABSTRACT: This thesis documents the research, design, implementation and successful testing of a prototype camera probe to survey the inside of hard rock boreholes. Rock core images are intended to aid mine ...

    • Design of a forward error correction algorithm for a satellite modem 

      Sefara, Mamphoko Nelly (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: One of the problems with any deep space communication system is that information may be altered or lost during transmission due to channel noise. It is known that any damage to the bit stream may lead ...

    • Development of a high speed PCI data capture card for the SUNSAT I ground station 

      Van der Westhuizen, W. J. (Willem Joseas) (Stellenbosch : Stellenbosch University, 2002-03)
      ENGLISH ABSTRACT: The primary payload of the University of Stellenbosch's micro-satellite, SUNSAT I, was a high quality imager, capable of taking stereoscopic images of the surface of the earth. Although the orbit of ...

    • Efficient registration of limited field of view ocular fundus imagery 

      Van der Westhuizen, Christo Carel (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: Diabetic- and hypertensive retinopathy are two common causes of blindness that can be prevented by managing the underlying conditions. Patients suffering from these conditions are encouraged to undergo ...

    • Image compression quality measurement : a comparison of the performance of JPEG and fractal compression on satellite images 

      Nolte, Ernst Hendrik (Stellenbosch : Stellenbosch University, 2000-04)
      ENGLISH ABSTRACT: The purpose of this thesis is to investigate the nature of digital image compression and the calculation of the quality of the compressed images. The work is focused on greyscale images in the domain ...

    • An investigation into multi-spectral tracking 

      Wood, Christiaan (Stellenbosch : University of Stellenbosch, 2005-03)
      The purpose of this study was to investigate multi-spectral tracking. Various algorithms were investigated and developed to enhance the contrast between target and non-target classes. Different tracking algorithms were ...

    • Monitoring of froth systems using principal component analysis 

      Kharva, Mohamed (Stellenbosch : Stellenbosch University, 2002-04)
      ENGLISH ABSTRACT: Flotation is notorious for its susceptibility to process upsets and consequently its poor performance, making successful flotation control systems an elusive goal. The control of industrial flotation ...

    • An object detection approach for cluttered images 

      Kok, R. (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: We investigate object detection against cluttered backgrounds, based on the MINACE (Minimum Noise and Correlation Energy) filter. Application of the filter is followed by a suitable segmentation algorithm, ...

    • Object recognition and automatic selection in a Robotic Sorting Cell 

      Janse van Rensburg, Frederick Johannes (Stellenbosch : University of Stellenbosch, 2006-12)
      This thesis relates to the development of an automated sorting cell as part of a flexible manufacturing line, with the use of object recognition. Algorithms for each of the individual subsections creating the cell, ...

    • On-line analysis of the stability and other features of froths and foams by use of digital image processing 

      Ellis, Rene (Stellenbosch : Stellenbosch University, 2002-03)
      ENGLISH ABSTRACT: The objective of this study is the assessment of the usefulness of an industrial machine vision system for laboratory studies of especially flotation froths and other foams. With this in mind it was ...

    • Onboard image geo-referencing for LEO satellites 

      Van den Dool, Riaan (Stellenbosch : University of Stellenbosch, 2005-12)
      The next generation of small satellites will require significant onboard data processing and information extraction capabilities to keep up with industry demands. The need for value added information products is ...

    • Processing of onboard images to assist automatic forward motion compensation for micro-satellites 

      Mouton, Christiaan J. (Stellenbosch : Stellenbosch University, 2003-03)
      ENGLISH ABSTRACT: South Africa's first micro satellite, SUNSAT, was operational in orbit for 23 months since its NASA-sponsored launch on February 23, 1999. SUNSAT is a graduate studentdeveloped satellite from the ...