Video-rate computational heterodyne holography

Antoine Dillée (1) , Romain Cancilliere (1) , Fernando Lopes (2) , Michael Atlan (1)

1 IL - Institut Langevin - Ondes et Images (UMR7587)
2 UMR_7577 - Géomagnétisme et paléomagnétisme et géophysique de surface

We present a versatile computational image rendering software of optically-acquired holograms. The reported software can process 4 Megapixel 8-bit raw frames from a sensor array acquired at a sustained rate of 80 Hz. Video-rate image rendering is achieved by streamline image processing with commodity computer graphics hardware. For time-averaged holograms acquired in off-axis optical configuration with a frequency-shifted reference beam, wide-field imaging of one tunable spectral component is permitted. This software is validated by phase-stepped hologram rendering, and non-contact monitoring of surface acoustic waves by single and dual sideband hologram rendering. It demonstrates the suitability of holography for video-rate computational laser Doppler imaging in heterodyne optical configuration.

Domaines: Optique [physics.optics]

Antoine Dillée, Romain Cancilliere, Fernando Lopes, Michael Atlan. Video-rate computational heterodyne holography. 2013. ⟨hal-00934148⟩