• Cardiac MRI segmentation with conditional random fields 

      Dreijer, Janto Frederick (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: This dissertation considers automatic segmentation of the left cardiac ventricle in short axis magnetic resonance images. The presence of papillary muscles near the endocardium border makes simple ...
    • Efficient Decoding of High-order Hidden Markov Models 

      Engelbrecht, Herman A. (Stellenbosch : University of Stellenbosch, 2007-12)
      Most speech recognition and language identification engines are based on hidden Markov models (HMMs). Higher-order HMMs are known to be more powerful than first-order HMMs, but have not been widely used because of their ...
    • Efficient Mixed-Order Hidden Markov Model Inference 

      Schwardt, Ludwig (Stellenbosch : University of Stellenbosch, 2007-12)
      Higher-order Markov models are more powerful than first-order models, but suffer from an exponential increase in model parameters with order, which leads to data scarcity problems during training. A more efficient ...
    • 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 ...
    • Measuring, refining and calibrating speaker and language information extracted from speech 

      Brummer, Niko (Stellenbosch : University of Stellenbosch, 2010-12)
      ENGLISH ABSTRACT: We propose a new methodology, based on proper scoring rules, for the evaluation of the goodness of pattern recognizers with probabilistic outputs. The recognizers of interest take an input, known to ...
    • On-board image quality assessment for a satellite 

      Marais, Izak van Zyl (Stellenbosch : University of Stellenbosch, 2009-03)
      The downloading of images is a bottleneck in the image acquisition chain for low earth orbit, remote sensing satellites. An on-board image quality assessment system could optimise use of available downlink time by ...