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Table 4 Number of the residual PoC in theory. The symbol “ ⊗” denotes that this situation does not exist

From: Camera calibration with coplanar conics: a unified explanation and ambiguity analysis

Conics classes

PAA

OPAS

Concentric

CC and PAP and general

Quasi-separate

⊗

1

⊗

2

Quasi-enclosing

1

2

2

4

Two-real-inter

⊗

1

⊗

2

Four-real-inter

1

2

1

2

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