Through water image by using continuous photos

Jan Shiang Chen, Chi Kuei Wang

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

Abstract

Underwater features at shallow depth (∼ 40 cm) are difficult to be observed and monitored. The water surface disturbed by flow and wind action prevents the direct observation from above water. Water-proofed camera or video are also hard to maneuver in such situations. In this study, we tackle this problem by using continuous photos (∼2000 photos per site) taken from above water and setup on a tripod. We employed a Nikon D200 camera, which takes about 3 - 12 minutes for each site. A grey card of photogrammetric grade is used to adjust the temporal change of illumination condition. Test sites include two flow types, i.e., no perceptible flow and smooth. A mode-based filter scheme is developed to filter the pixels that are disturbed by wave actions. The results show that the proposed filter is most effective for both flow types, where the water surface is mostly flat.

Original languageEnglish
Title of host publication30th Asian Conference on Remote Sensing 2009, ACRS 2009
Pages1593-1598
Number of pages6
Publication statusPublished - 2009 Dec 1
Event30th Asian Conference on Remote Sensing 2009, ACRS 2009 - Beijing, China
Duration: 2009 Oct 182009 Oct 23

Publication series

Name30th Asian Conference on Remote Sensing 2009, ACRS 2009
Volume3

Other

Other30th Asian Conference on Remote Sensing 2009, ACRS 2009
CountryChina
CityBeijing
Period09-10-1809-10-23

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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