Essays about: "Distance transforms"

Showing result 1 - 5 of 6 essays containing the words Distance transforms.

  1. 1. Unsupervised Detection of Interictal Epileptiform Discharges in Routine Scalp EEG : Machine Learning Assisted Epilepsy Diagnosis

    University essay from Uppsala universitet/Avdelningen Vi3

    Author : Shuai Shao; [2023]
    Keywords : EEG; electroencephalography; IED; interictal epileptiform discharges; spike detection; epilepsy; unsupervised; Fourier transform; STFT; short-time Fourier transform; CWT; continuous wavelet transform; DWT; discrete wavelet transform; ML; machine learning; ANN; artificial neural network; CNN; convolutional neural network; autoencoder; HMM; hidden Markov model; ECS; Euclidean distance of cumulative spectrum;

    Abstract : Epilepsy affects more than 50 million people and is one of the most prevalent neurological disorders and has a high impact on the quality of life of those suffering from it. However, 70% of epilepsy patients can live seizure free with proper diagnosis and treatment. Patients are evaluated using scalp EEG recordings which is cheap and non-invasive. READ MORE

  3. 2. Signed Anti-Aliased Euclidean Distance Transform : Going from unsigned to signed with the assistance of a vector based method

    University essay from Linköpings universitet/Informationskodning

    Author : Erik Johanssson; [2022]
    Keywords : Distance Transform; Distance Map; Euclidean; Anti Aliased; Signed; Vector;

    Abstract : Knowing the shapes, sizes and positional relations between features in an image can be useful for different types of image processing.Using a Distance Transform can give us these properties as a Distance Map. READ MORE

  4. 3. Shape Representation Using a Volume Coverage Model

    University essay from Linköpings universitet/Informationskodning

    Author : Segerbäck Emil; [2020]
    Keywords : Computer graphics; Distance transform; Distance map;

    Abstract : Geometric shapes can be represented in a variety of different ways. A distancemap is a map from points to distances. This can be used as a shape representationwhich can be created through a process known as a distance transform. This the-sis project tests a method for three-dimensional distance transforms using frac-tional volume coverage. READ MORE

  5. 4. Linear Algebra in Computer Graphics

    University essay from Linnéuniversitetet/Institutionen för matematik (MA)

    Author : Ana Strikic; [2019]
    Keywords : Linear algebra; computer graphics;

    Abstract : In this thesis, we will investigate the rapidly developing eld of computergraphics by giving an insight into the calculations behind the most im-portant topics in perspectives, shading and distance. We will delve intofrequently used shading algorithms and perspective transforms in areas ofcomputer science, architecture and photography, such as pseudo sh-eyelenses and wide-angle lenses. READ MORE

  6. 5. The influence of the dispersionmap on optical OFDM transmissions

    University essay from Institutet för rymdfysik, Uppsalaavdelningen

    Author : Kamyar Forozesh; [2010]
    Keywords : OFDM; fiber; optic; dispersion; optical transmission;

    Abstract : Fiber-optic networks are an integral part of todays digital communication system. In these networks, distances of typically 400 km to 6000 km are linked together, and information is transfered at extremely high data rates. READ MORE