Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns

Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns

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A phase unwrapping method for phase-shifting projected fringe profilometry is presented.It did not require additional projections Horse Fleece Quarter Sheets to identify the fringe orders.The pattern used for the phase extraction could be used for phase unwrapping directly.By spatially encoding the fringe patterns that were used to perform the phase-shifting technique with binary contrasts, fringe orders could be discerned.

For spatially isolated objects or surfaces with large depth discontinuities, unwrapping could be identified without ambiguity.Even though the surface color or reflectivity Collectibles varied periodically with position, it distinguished the fringe order very well.