Overview

This section describes the theory that underpins the geopyv package. There are five major sections covering the theory behind the Image, Subset, Mesh, Sequence and Particles classes. References to the work that developed the theory presented here are provided.

• Image
  • Computation of B-spline coefficients
  • Precomputation of interpolant array
  • Image intensity interpolation
• Subset
  • Templates
  • Shape Functions
  • Subset quality metrics
    • Sum of Square of Subset Intensity Gradients (SSSIG)
    • Standard deviation of subset pixel intensities
  • Correlation coefficient
    • Normalised Cross-Correlation
    • Zero-Normalised Sum of Squared Differences
    • Zero-Normlised Cross-Correlation
  • Initial guess
  • Iterative Solution Methods
    • Inverse Compositional Gauss-Newton (ICGN) Method
    • Forward Additive Gauss-Newton (FAGN) Method
    • Exit criteria
• Mesh
• Sequence
• Particle