Anti-Aliasing and Data Compressing Technique for Time-Stretch Imaging System

Xu Wang, Bo Dai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Time-stretch imaging is a novel ultrafast imaging technique, which is based on space-to-time-to-wavelength mapping. We proposed an anti-aliasing technique based on optical time-division multiplexing. With the anti-aliasing technique, we can acquire a large amount of image information by using relatively low-sampling-rate electronic digitizer. Numerical analysis shows that the image quality can be improved by 4.16 dB comparing to that without using the anti-aliasing technique and at least 2.3 dB comparing to those digital signal processing techniques such as bilinear, bicubic and nearest-neighbor interpolation and Lanczos resampling techniques. In addition, we experimentally demonstrated a line-scan imaging system, which has the scan rate of 38.88 MHz. Defects and scratches on the object that were not identifiable originally can be clearly distinguished after using the proposed anti-aliasing technique.

Original languageEnglish
Title of host publication2018 20th International Conference on Transparent Optical Networks (ICTON)
PublisherIEEE
ISBN (Electronic)9781538666050
DOIs
Publication statusPublished - 27 Sep 2018
Event20th International Conference on Transparent Optical Networks 2018 - Bucharest, Romania
Duration: 1 Jul 20185 Jul 2018

Publication series

NameInternational Conference on Transparent Optical Networks (ICTON)
PublisherIEEE
ISSN (Electronic)2161-2064

Conference

Conference20th International Conference on Transparent Optical Networks 2018
Abbreviated titleICTON 2018
CountryRomania
CityBucharest
Period1/07/185/07/18

Keywords

  • analog optical image processing
  • image enhancement
  • ultrafast measurements

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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