Search for dissertations about: "Carl-fredrik Westin"
Found 4 swedish dissertations containing the words Carl-fredrik Westin.
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1. Feature extraction based on a tensor image description
Abstract : Feature extraction from a tensor based local image representation introduced by Knutsson in [37] is discussed. The tensor representation keeps statements of structure, certainty of statement and energy separate. READ MORE
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2. A Tensor Framework for Multidimensional Signal Processing
Abstract : This thesis deals with ltering of multidimensional signals. A large part of the thesis is devoted to a novel filtering method termed "Normalized convolution". The method performs local expansion of a signal in a chosen lter basis which not necessarily has to be orthonormal. READ MORE
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3. Manifold learning and representations for image analysis and visualization
Abstract : We present a novel method for manifold learning, i.e. identification of the low-dimensional manifold-like structure present in a set of data points in a possibly high-dimensional space. The main idea is derived from the concept of Riemannian normal coordinates. READ MORE
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4. Manifolds in Image Science and Visualization
Abstract : A Riemannian manifold is a mathematical concept that generalizes curved surfaces to higher dimensions, giving a precise meaning to concepts like angle, length, area, volume and curvature. A glimpse of the consequences of a non-flat geometry is given on the sphere, where the shortest path between two points – a geodesic – is along a great circle. READ MORE