Image analysis techniques to accompany a new in situ ichthyoplankton imaging system

G. Tsechpenakis, C. Guigand, R. K. Cowen

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

12 Scopus citations


We have built a high resolution towed digital imaging system (ISIIS) capable of imaging water volumes sufficient to accurately quantify even rare plankton (e.g. larval fish) in situ. This imaging system produces very high resolution imagery at very high data rates necessitating automated image analysis. As we are interested in the identification and quantification of a large number of organisms, some of which are relatively similar to each other, we are developing an automated system for detection and recognition of organisms of interest using computer vision tools. Our method aims at (i) the detection of multiple regions (organisms) of interest automatically, while filtering out noise and out-of-focus organisms, and (ii) the classification of the detected organisms into pre-defined categories using shape and texture information. For the organisms detection, we use a probabilistic scheme based on image statistics to locate the regions of interest and - based on size and shape constraints - we filter out the noise, i.e., regions that are detected but do not correspond to organisms. For the classification of the detected organisms, we use the Scale Invariant Feature Transform (SIFT) for matching between the detected regions and the organism images in our database ("dictionary").

Original languageEnglish (US)
Title of host publicationOCEANS 2007 - Europe
StatePublished - Nov 28 2007
EventOCEANS 2007 - Europe - Aberdeen, Scotland, United Kingdom
Duration: Jun 18 2007Jun 21 2007

Publication series

NameOCEANS 2007 - Europe


OtherOCEANS 2007 - Europe
Country/TerritoryUnited Kingdom
CityAberdeen, Scotland


  • Automated analysis for ISIIS
  • Computer vision
  • Detection of organisms in plankton images
  • Organism recognition

ASJC Scopus subject areas

  • Computer Science Applications
  • Oceanography
  • Ocean Engineering
  • Modeling and Simulation


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