Rotational and direct compensation for digital hologram phase unwrapping

• Autores: Samia Heshmat, Satoshi Tomioka, Shusuke Nisiyama
• Localización: SPECKLE 2012: V International Conference on Speckle Metrology : 10-12 september 2012 : Vigo, Spain / Ángel Manuel Fernández Doval (ed. lit.), María Cristina Trillo Yáñez (ed. lit.), José Carlos López Vázquez (ed. lit.), 2012, ISBN 9780819490902
• Idioma: inglés
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• Resumen

  • In digital holography, phases carry the 3D information of objects. However, phase mapping is ambiguous, as the extracted phase turns into a form that suffers from 2π phase jumps. In this case the phase data must be unwrapped to fit for use. For this reason, we developed a new phase unwrapping algorithm that is applicable to digital hologram maps. The proposed algorithm has been evaluated and compared with past phase unwrapping methods by using simulated and real phase data. Results show that the proposed method gives satisfactory unwrapped results with low computation time