Sökning: "rotational symmetries"

Hittade 4 uppsatser innehållade orden rotational symmetries.

  1. 1. An Introduction to p-adic Analytic Groups

    Kandidat-uppsats, Lunds universitet/Matematik LTH; Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

    Författare :Frieder Selisko; [2023]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : In this thesis we introduce the concept of a p-adic analytic pro-p group. To do so we discuss important theorems and concepts connected to more general types of groups, these include profinite groups, pro-p groups, powerful p-groups, powerful pro-p groups and uniform groups... LÄS MER

  3. 2. Strain-induced nonlinear Hall effect in graphene systems

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Pedram Pakmehr; [2022]
    Nyckelord :;

    Sammanfattning : This thesis aims to study the nonlinear electrical transport response of monolayer and bilayer graphene systems under the influence of different lattice deformations (strain). Broken inversion and rotation symmetries can generate a second-order transverse current response called the nonlinear Hall effect in the presence of time-reversal symmetry. LÄS MER

  4. 3. Neural Network Gaze Tracking using Web Camera

    Uppsats för yrkesexamina på grundnivå, Medicinsk informatik; Tekniska högskolan

    Författare :David Bäck; [2006]
    Nyckelord :gaze tracking; computer vision; image processing; face detection; rotational symmetries; neural network; backpropagation;

    Sammanfattning : Gaze tracking means to detect and follow the direction in which a person looks. This can be used in for instance human-computer interaction. Most existing systems illuminate the eye with IR-light, possibly damaging the eye. The motivation of this thesis is to develop a truly non-intrusive gaze tracking system, using only a digital camera, e. LÄS MER

  5. 4. Detection of interesting areas in images by using convexity and rotational symmetries

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknik och naturvetenskap

    Författare :Linda Karlsson; [2002]
    Nyckelord :Datorteknik; Detection; convexity; shape from shading; rotational symmetries; polynomial expansion; normalized inhibition; Datorteknik;

    Sammanfattning : There are several methods avaliable to find areas of interest, but most fail at detecting such areas in cluttered scenes. In this paper two methods will be presented and tested in a qualitative perspective. LÄS MER