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 journalArticle

6 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 languageEnglish
Pages (from-to)5098-5104
Number of pages7
JournalJournal of Lightwave Technology
Volume35
Issue number23
Early online date1 Nov 2017
DOIs
Publication statusPublished - 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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