Relevant Processing Techniques

  In this section we describe a number of techniques which have potential applications to the task of lipreading. Our goal is to provide an overview; further references are provided for the interested reader.

• Analysis of Local Orientation and Phase
  • Orientation Template Correlation for Feature Localisation
  • Representation and Visualisation of Local Orientation Estimates
  • Methods for Estimating Local Orientation and Phase
  • Tensor Field Filtering
• Active Contour Models
• Optical Flow
  • Differential Methods
  • The Onedimensional Case
• Principle Components Analysis
• Gaze Estimation
  • Motivation
  • Pinhole Cameras and Perspective Projection
  • Estimation of the Perspective Projection Matrix
• Classification
  • The Problem
  • An Optimal Decision Rule
  • The Probabilistic Eigenspace Approach