An Application of Shape-Based Level Sets to Fish Detection in Underwater Images
MetadataShow full item record
Underwater stereo-video technology systems are used widely for measurement of fish. However the effectiveness of the stereo-video measurement has been limited because most operational systems still rely on a human operator. In this paper, an automated approach for fish detection using a shape-based level sets framework is presented. Shape knowledge of fish is modelled by Principal Component Analysis (PCA). The Haar classifier is used for precise position of the fish head and snout in the image, which is vital information for close proximity initialisation of the shape model. The approach has been tested on under-water images representing a variety of challenging situations typical of the underwater environment, such as background interference and poor contrast boundaries. The results obtained demonstrate that the approach is capable ofovercoming these limitations and capturing the fish outline at sub-pixel accuracy.
Copyright © 2014 C. Arrowsmith, C. Bellman, W. Cartwright, M. Shortis
Showing items related by title, author, creator and subject.
Salman, A.; Jalal, A.; Shafait, F.; Mian, A.; Shortis, M.; Seager, J.; Harvey, Euan (2016)Underwater video and digital still cameras are rapidly being adopted by marine scientists and managers as a tool for non-destructively quantifying and measuring the relative abundance, cover and size of marine fauna and ...
Ravanbakhsh, M.; Shortis, M.; Shafait, F.; Mian, A.; Harvey, Euan; Seager, J. (2015)Underwater stereo-video systems are widely used for the measurement of fish. However, the effectiveness of stereo-video measurement has been limited because most operational systems still rely on a human operator. In this ...
Similarities between Line Fishing and Baited Stereo- Video Estimations of Length-Frequency: Novel Application of Kernel Density EstimatesLanglois, T.; Fitzpatrick, B.; Fairclough, D.; Wakefield, Corey; Hesp, A.; McLean, D.; Harvey, Euan; Meeuwig, J. (2012)Age structure data is essential for single species stock assessments but length-frequency data can provide complementary information. In south-western Australia, the majority of these data for exploited species are derived ...