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Optical Engineering

Lossy coding technique for digital holographic signal
Author(s): Young-Ho Seo; Hyun-Jun Choi; Dong-Wook Kim
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Paper Abstract

We propose an efficient coding method of digital holograms (or fringe patterns) using standard compression tools for video and image. The fringe pattern is generated by a computer-generated hologram (CGH) algorithm with both an object image and its depth information. The proposed coding consists of preprocessing to separate RGB color space components, localization by segmenting the fringe pattern, frequency transform using M×N (segment size), 2-D discrete cosine transform (DCT) for extracting redundancy, segment scanning the segmented fringe pattern to form a video sequence, classification of coefficients, and hybrid video coding, which uses MPEG-2/4, H.264/AVC, differential pulse code modulation (DPCM), and lossless coding. The proposed algorithm illustrates that it has better properties for reconstruction, from four to eight times higher compression rate than previous research.

Paper Details

Date Published: 1 June 2006
PDF: 10 pages
Opt. Eng. 45(6) 065802 doi: 10.1117/1.2215387
Published in: Optical Engineering Volume 45, Issue 6
Show Author Affiliations
Young-Ho Seo, Kwangwoon Univ. (South Korea)
Hyun-Jun Choi, Kwangwoon Univ. (South Korea)
Dong-Wook Kim, Kwangwoon Univ. (South Korea)

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