title: A new technique for detecting colored macro plastic debris on beaches using webcam images and CIELUV.
abstract: We have developed a technique for detecting the pixels of colored macro plastic debris (plastic pixels) using photographs taken by a webcam installed on Sodenohama beach, Tobishima Island, Japan. The technique involves generating color references using a uniform color space (CIELUV) to detect plastic pixels and removing misdetected pixels by applying a composite image method. This technique demonstrated superior performance in terms of detecting plastic pixels of various colors compared to the previous method which used the lightness values in the CIELUV color space. We also obtained a 10-month time series of the quantity of plastic debris by combining a projective transformation with this technique. By sequential monitoring of plastic debris quantity using webcams, it is possible to clean up beaches systematically, to clarify the transportation processes of plastic debris in oceans and coastal seas and to estimate accumulation rates on beaches.
authors: Coastal Zone Systems Division, Coastal, Marine and Disaster Prevention Department, National Institute for Land and Infrastructure Management, 3-1-1 Nagase, Yokosuka, Kanagawa 239-0826, Japan. kataoka-t852a@ysk.nilim.go.jp
authors: Tomoya
authors: T
authors: Kataoka
authors: Hirofumi
authors: H
authors: Hinata
authors: Shin'ichiro
authors: S
authors: Kako
mesh_terms: D001493:Bathing Beaches / Q000706:statistics & numerical data*; D004784:Environmental Monitoring / Q000379:methods*; D007564:Japan; D010969:Plastics / Q000032:analysis*; D058998:Remote Sensing Technology; D014741:Video Recording / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D010969:Plastics; D014874:Water Pollutants, Chemical