Extending factorization to perspective
Several Recent Approaches
•[Christy 96]; [Triggs 96]; [Han 00]; [Mahamud 01]
•Initialize with ortho/weak perspective model then iterate
Christy & Horaud
•Derive expression for weak perspective as a perspective projection plus a correction term:
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•Basic procedure:
–Run Tomasi-Kanade with weak perspective
–Solve for ei (different for each row of M)
–Add correction term to W, solve again (until convergence)