title: Identifying rhodamine dye plume sources in near-shore oceanic environments by integration of chemical and visual sensors.
abstract: This article presents a strategy for identifying the source location of a chemical plume in near-shore oceanic environments where the plume is developed under the influence of turbulence, tides and waves. This strategy includes two modules: source declaration (or identification) and source verification embedded in a subsumption architecture. Algorithms for source identification are derived from the moth-inspired plume tracing strategies based on a chemical sensor. The in-water test missions, conducted in November 2002 at San Clemente Island (California, USA) in June 2003 in Duck (North Carolina, USA) and in October 2010 at Dalian Bay (China), successfully identified the source locations after autonomous underwater vehicles tracked the rhodamine dye plumes with a significant meander over 100 meters. The objective of the verification module is to verify the declared plume source using a visual sensor. Because images taken in near shore oceanic environments are very vague and colors in the images are not well-defined, we adopt a fuzzy color extractor to segment the color components and recognize the chemical plume and its source by measuring color similarity. The source verification module is tested by images taken during the CPT missions.
authors.affiliation: State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China. tiany@sia.cn
authors.forename: Yu
authors.initials: Y
authors.lastname: Tian
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Kang
authors.forename: Yunyi
authors.initials: Y
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Aiqun
authors.initials: A
authors.lastname: Zhang
authors.forename: Jiangchen
authors.initials: J
authors.lastname: Yu
authors.forename: Yiping
authors.initials: Y
authors.lastname: Li
mesh_terms: D000465:Algorithms; D002140:California; D002681:China; D004784:Environmental Monitoring; D006801:Humans; D009657:North Carolina; D009792:Oceans and Seas; D012235:Rhodamines / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D012235:Rhodamines; D014867:Water