An Enhanced Spatio-spectral Template for Automatic Small Recreational Vessel Detection

This paper examines the performance of a spatiospectral template on Ikonos imagery to automatically detect small recreational boats. The spatiospectral template is utilized and then enhanced through the use of a weighted Euclidean distance metric adapted from the Mahalanobis distance metric. The aim is to assist the Canadian Coast Guard in gathering data on recreational boating for the modeling of search and rescue incidence risk. To test the detection accuracy of the enhanced spatiospectral template, a dataset was created by gathering position and attribute data for 53 recreational vessel targets purposely moored for this research within Cadboro Bay, British Columbia, Canada. The Cadboro Bay study site containing the targets was imaged using Ikonos. Overall detection accuracy was 77%. Targets were broken down into 2 categories: 1) Category A-less than 6 m in length, and Category B-more than 6 m long. The detection rate for Category B targets was 100%, while the detection rate for Category A targets was 61%. It is important to note that some Category A targets were intentionally selected for their small size to test the detection limits of the enhanced spatiospectral template. The smallest target detected was 2.2 m long and 1.1 m wide. The analysis also revealed that the ability to detect targets between 2.2 and 6 m long was diminished if the target was dark in color.

  • Availability:
  • Authors:
    • Pegler, Kevin
    • Coleman, David
    • Pelot, Ronald
    • Keller, C Peter
  • Publication Date: 2007-1

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 79-87
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01045094
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 7 2007 12:28PM