کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10118193 1629182 2019 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
PTV-Stream: A simplified particle tracking velocimetry framework for stream surface flow monitoring
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
PTV-Stream: A simplified particle tracking velocimetry framework for stream surface flow monitoring
چکیده انگلیسی
Particle tracking velocimetry (PTV) is a promising image-based approach for remote streamflow measurements in natural environments. However, most PTV approaches require highly-defined round-shaped tracers, which are often difficult to observe outdoors. PTV-Stream offers a versatile alternative to cross-correlation-based PTV by affording the identification and tracking of features of any shape transiting in the field of view. This nearest-neighbor algorithm is inherently thought for estimating surface flow velocity of streams in outdoor conditions. The procedure allows for reconstructing and filtering the trajectories of features that are more likely to pertain to actual objects transiting in the field of view rather than to water reflections. The procedure is computationally efficient and is demonstrated to yield accurate measurements even in case of downsampled image sequences.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: CATENA - Volume 172, January 2019, Pages 378-386
نویسندگان
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