Data compression for time-stretch imaging based on differential detection and run-length encoding

Bo Dai; Songchao Yin; Zhensen Gao; Kaimin Wang; Dawei Zhang; Songlin Zhuang; Xu Wang

doi:10.1109/JLT.2017.2768382

Data compression for time-stretch imaging based on differential detection and run-length encoding

Bo Dai, Songchao Yin, Zhensen Gao, Kaimin Wang, Dawei Zhang, Songlin Zhuang, Xu Wang

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A high-fidelity data compression method based on differential detection and run-length encoding is proposed for time-stretch imaging system, where spatial image is mapped to the time domain and then read out by a balanced photodetector for image reconstruction. Differential detection is capable of distinguishing discrepancy of consecutive scans and eliminating identical signals. After the detection, run-length encoding merges consecutive identical data to a single data. In the experiment, a 77.76 MHz line-scan imaging system is demonstrated. The compression ratio of more than 3.8 is achieved. After the data decompression, the image of high fidelity can be reconstructed.

Original language	English
Pages (from-to)	5098-5104
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	35
Issue number	23
Early online date	1 Nov 2017
DOIs	https://doi.org/10.1109/JLT.2017.2768382
Publication status	Published - 1 Dec 2017

Keywords

Data compression
Imaging system
Optical attenuators
Optical fibers
Optical imaging
Optical pulses
optical signal processing
ultrafast measurements

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1109/JLT.2017.2768382

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Xu Wang
- x.wang@hw.ac.uk
- School of Engineering & Physical Sciences - Associate Professor
- School of Engineering & Physical Sciences, Institute of Photonics and Quantum Sciences - Associate Professor
Person: Academic (Research & Teaching)

Cite this

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abstract = "A high-fidelity data compression method based on differential detection and run-length encoding is proposed for time-stretch imaging system, where spatial image is mapped to the time domain and then read out by a balanced photodetector for image reconstruction. Differential detection is capable of distinguishing discrepancy of consecutive scans and eliminating identical signals. After the detection, run-length encoding merges consecutive identical data to a single data. In the experiment, a 77.76 MHz line-scan imaging system is demonstrated. The compression ratio of more than 3.8 is achieved. After the data decompression, the image of high fidelity can be reconstructed.",

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AU - Gao, Zhensen

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AU - Zhang, Dawei

AU - Zhuang, Songlin

AU - Wang, Xu

PY - 2017/12/1

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N2 - A high-fidelity data compression method based on differential detection and run-length encoding is proposed for time-stretch imaging system, where spatial image is mapped to the time domain and then read out by a balanced photodetector for image reconstruction. Differential detection is capable of distinguishing discrepancy of consecutive scans and eliminating identical signals. After the detection, run-length encoding merges consecutive identical data to a single data. In the experiment, a 77.76 MHz line-scan imaging system is demonstrated. The compression ratio of more than 3.8 is achieved. After the data decompression, the image of high fidelity can be reconstructed.

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KW - Data compression

KW - Imaging system

KW - Optical attenuators

KW - Optical fibers

KW - Optical imaging

KW - Optical pulses

KW - optical signal processing

KW - ultrafast measurements

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Data compression for time-stretch imaging based on differential detection and run-length encoding

Abstract

Keywords

ASJC Scopus subject areas

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Xu Wang

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