Curve Registration: Practical Guide and Pitfalls2 months ago
Registration: Template, Warp, Domain | What Is the Template? | What is a Warping Function? | Domain-Preserving vs Non-domain-preserving Warps | Example: Shift Registration with Explicit Template | Choosing a Registration Method | Evidence-Based Method Selection | Pitfalls and Likely Failure Modes | Structured shape variation | Noise dominates phase signal | Sparse or irregular grids | Boundary and overlap artifacts | Over-warping | Lambda penalization | Unsuitable template | Practical Diagnostics Workflow | Step 1: Register and inspect summary | Step 2: Visual inspection via plot() | Step 3: Quantify alignment of specific features | Step 4: Compare with an alternative method | Theoretical Background 101 | SRVF Framework | CC (Continuous Registration Criterion) | Affine (Shift / Scale) | Landmark | Worked Examples | Pinch Data: Cross-method Comparison | Growth Data: Deeper Real-data Workflow | Data representation matters | Penalization | Landmark registration | References
tidyfun 0.1.2Fabian Scheipl x06_Registration.Rmd