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Absolute phase retrieval based on De Bruijn sequence coding
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DOI：10.1016/j.optlaseng.2026.110126.png)
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Abstract
En 中文
• A De Bruijn sequence coding method is proposed for phase unwrapping in FPP.
• Fringe orders are encoded using a 3-bit binary De Bruijn sequence.
• Wrapped phase monotonicity is used to synchronously record phase and fringe orders.
• Fringe order information is embedded into sinusoidal fringes without extra patterns.
• The proposed method improves phase unwrapping efficiency while maintaining accuracy.
Keywords:
3D measurement
Temporal phase unwrapping
Phase coding
De Bruijn sequence
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