Underwater Digital Stereo-Observation Technique for Red Hydrocoral Study
Article
Article Title | Underwater Digital Stereo-Observation Technique for Red Hydrocoral Study |
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ERA Journal ID | 4653 |
Article Category | Article |
Authors | Chong, A. K. and Stratford, P. |
Journal Title | Photogrammetric Engineering and Remote Sensing |
Journal Citation | 68 (7), pp. 745-751 |
Number of Pages | 7 |
Year | Jul 2002 |
Place of Publication | United States |
ISSN | 0099-1112 |
2374-8079 | |
Abstract | A linear regression model is used to determine the size of correction required for stereophotogrammetric measurement from photographs taken in an underwater environment. The model utilizes the stereophotogrammetric distance measurement of an object from a set of object-space control points. A correction factor is applied to the stereophotogrammetric measurement to obtain the corrected measurement. The technique was used to study the growth of an endemic species of hydrozoan coral, Errina novaezelandiae, in Doubtful Sound, Fiordland, New Zealand. The results show that the technique has a measurement accuracy of ± 1.2 mm at the 95 percent confidence level. We found that these hydrozoan corals have a high erosion rate, presumably due to grazing, which was not reported previously. |
Keywords | Erosion; Measurements; Regression analysis |
Public Notes | There are no files associated with this item. |
Byline Affiliations | University of Otago, New Zealand |
https://research.usq.edu.au/item/w2861/underwater-digital-stereo-observation-technique-for-red-hydrocoral-study
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