Digital in-line particle holography: twin-image suppression using sparse blind source separation

作者：Hattay Jamel^*; Belaid Samir; Lebrun Denis; Naanaa Wady

来源：Signal, Image and Video Processing, 2015, 9(8): 1767-1774.

DOI：10.1007/s11760-014-0646-3

• Twin-image removal
• Digital in-line hologram
• Particle holography
• Blind source separation
• Quincunx Lifting Scheme
• Geometric unmixing algorithm

We propose a robust autofocus method for reconstructing digital holograms and twin-image removal based on blind source separation approach. The method is made up of two components: an efficient quincunx lifting scheme based on wavelet packet transform, whose role is to maximize a sharpness metric related to the sparseness of the input holograms, and a geometric unmixing algorithm, which achieves the separation task. Experimental results confirm the ability of sparse blind source separation to discard the unwanted twin-image from in-line digital holograms of particles.

• 出版日期2015-11