Holography

Lossy coding technique for digital holographic signal

[+] Author Affiliations
Young-Ho Seo

Kwangwoon University, Department of Electronic Materials Engineering, 447-1, Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea

Hyun-Jun Choi

Kwangwoon University, Department of Electronic Materials Engineering, 447-1, Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea

Dong-Wook Kim

Kwangwoon University, Department of Electronic Materials Engineering, 447-1, Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea

Opt. Eng. 45(6), 065802 (June 16, 2006). doi:10.1117/1.2215387
History: Received July 23, 2005; Revised November 23, 2005; Accepted November 28, 2005; Published June 16, 2006
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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.

© 2006 Society of Photo-Optical Instrumentation Engineers

Citation

Young-Ho Seo ; Hyun-Jun Choi and Dong-Wook Kim
"Lossy coding technique for digital holographic signal", Opt. Eng. 45(6), 065802 (June 16, 2006). ; http://dx.doi.org/10.1117/1.2215387


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