A JPEG-based enhanced compression algorithm of digital holograms

Hanming Yu; Zibang Zhang; Jingang Zhong

doi:10.1117/12.999336

26 November 2012 A JPEG-based enhanced compression algorithm of digital holograms

Hanming Yu, Zibang Zhang, Jingang Zhong

Proceedings Volume 8556, Holography, Diffractive Optics, and Applications V; 85560K (2012) https://doi.org/10.1117/12.999336
Event: Photonics Asia, 2012, Beijing, China

Abstract

We present a modified version of the general JPEG encoder for digital holograms. Since digital holograms are characterized by most of their information concentrated at first-order term, to compress digital holograms only with their first-order term is available. The proposed algorithm performs 2D-DCT (discrete cosine transform) on digital holograms as the general JPEG, then quantizes and encodes the low-frequency section extracted with an adaptive mask. Compatible with the general JPEG, the compressed holograms can be directly decoded by the general decoders. Our simulation and experimental results show that this algorithm has higher compression ratio than the general JPEG and more accurate retrieved phase while the compression is equal.

Citation Download Citation

Hanming Yu, Zibang Zhang, and Jingang Zhong "A JPEG-based enhanced compression algorithm of digital holograms", Proc. SPIE 8556, Holography, Diffractive Optics, and Applications V, 85560K (26 November 2012); https://doi.org/10.1117/12.999336

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