Wavelet denoising of epicardial fluorescence imaging

Shien-Fong Lin*, Gustavo Rohde, Akram Aldroubi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


High-resolution optical mapping is an emerging technique to record the activation and propagation of transmembrane potential on the surface of cardiac tissues. Important electrodynamic information previously not available from extracellular electric recording could be extracted from these detailed optical recordings. The noise contamination in the images is a major obstacle that prohibits higher level of information extraction. Because the patterns of interest contain sharp wavefronts and structures that we wish to detect and track in a series of frames, we seek to perform denoising based on wavelet decomposition approaches. Among the wavelet denoise methods that were tested in this preliminary study, the wavelet packet produced the best results that could be extended to denoise the entire image sequence for multi-dimensional information processing.

Original languageEnglish
Pages (from-to)267-273
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1 Dec 1998
EventWavelet Applications in Signal and Image Processing VI - San Diego, CA, United States
Duration: 22 Jul 199823 Jul 1998


  • Cardiac activation
  • Denoise
  • Fluorescence
  • Wavelet

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