Abstract
In recent years, due to the development of hardware and video image processing technology, image analysis technique using a wide coastal coastline, it made it possible to analyze the wave runup and swash, current and so on. However, in order to obtain the image information of a large area requires a high-resolution imaging at a high position, however, to the recording technique used in the past, there is a limit of height and resolution. Thus, recently, on the basis of remote sensing techniques, or build spatial information technology using UAV (Unmanned Aerial Vehicle) system, and the research and utilization in various fields it increased. Small UAV platforms is becoming low-cost, miniaturized hyperspectral imaging technology. The direct measurement of wave induce current is tested using image analysis techniques using sea dye maker and UAV. Specially, rip currents are approximately shore normal seaward flows which are strong, localized and rather narrow. In this method, UAV at a region with frequent wave induced current occurrence, and images are continuously obtained in real time. This research investigates the development of wave induced currents using images in East coast of Korea.
Highlights
In recent years, due to the development of hardware and video image processing technology, image analysis technique using a wide coastal coastline, it made it possible to analyze the wave runup and swash, current and so on
Using the low-altitude high-resolution image data obtained after completion of the flight in order to produce the orthophoto and DSM (Digital Surface Model) can be modeled high-resolution orthophoto and detailed DSM and model body and correction of the picture built their own it is easy to handle UAV image processing were performed, it was carried unmanned aerial photo image processing operations, and modeling the data acquired
Since rip currents are developed by longshore currents, the observed longshore current variations in space and time can be used to detect rip current generation
Summary
Due to the development of hardware and video image processing technology, image analysis technique using a wide coastal coastline, it made it possible to analyze the wave runup and swash, current and so on. METHOD In this study sediment transport in the major external wave induced current to the direct observation of advection diffusion dye to trace a direct approach was adopted, study area on the maritime distress for the sea dye maker.
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