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Unmanned Aerial Systems for monitoring marine pollution. We provide a comparison among techniques to detect and map marine litter objects on an UAS-derived orthophoto of a sandy beach-dune system. Manual image screening technique allowed a detailed description of marine litter categories. Random forest classifier returned the best-automated detection rate F-score 70%, while convolutional neural network performed slightly worse F-score 60% due to a higher number of false positive detections. We show that automatic methods allow faster and more frequent surveys, while still providing a reliable density map of the marine litter load. Image manual screening should be preferred when the characterization of marine litter type and material is required. Our analysis suggests that the use of UAS-derived orthophoto is appropriate to obtain a detailed geolocation of marine litter items, requires much less human effort and allows a wider area coverage. One survey estimates that recreational boaters dump an average of half a kilogram of garbage into the water every time they go out in their boats. For centuries, seafarers threw their litter into the drink without a worry. But that was before indestructible plastics came along. In those days, trash was made up of natural material that decomposed with no harm to wildlife. Today, litter is an enormous ecological problem, but one we can solve so easily. In the Maritimes, a group of commercial fishermen has organized a hugely successful plan to stop ocean pollution. In the Ship to Shore Trash Campaign, fishermen now bring their garbage ashore instead of tossing it overboard. Fishing boats along the Acadian shore of New Brunswick bring ashore about 9,500 kilograms of trash every week! The campaign could make the difference between life and death for leatherback turtles. Swimming is becoming unsafe, as over 12,000 beaches in the United States have been quarantined due to contamination from pollutants. Developed areas like parking lots enable runoff to occur at a much higher volume than a naturally absorbent field. Even simply driving a car or making a house warm can leak 28 million gallons of oil into lakes, streams and rivers. The hunt for petroleum through offshore gas and oil drilling leaks extremely dangerous toxins into the ocean and luckily is one aspect of pollution that has been halted by environmental laws. Wastewater containing nutrients often causes eutrophication which can kill off existing life in water bodies. A Thailand study focusing on water pollution origins found that the highest concentrations of water contamination in the U-tapao river had a direct correlation to industrial wastewater discharges. Without appropriate awareness of marine pollution, the necessary global will to effectively address the issues may prove inadequate. Balanced information on the sources and harmful effects of marine pollution need to become part of general public awareness, and ongoing research is required to fully

jeep willy camo all over printed hawaiian shirt 1
jeep willy camo all over printed hawaiian shirt 1

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