Horizon tracking by hybrid approach

We propose a robust method for real time horizon detection (ie. separation line between the coast and sea) in a maritime context. The ultimate objective is to combine a video stream and electronic charts for augmented reality application. We present the combination of an image analysis algorithm with information from an inertial unit. We then present an assessment of the algorithm?s performance with regard to the rate of detection of the horizon and the impact of the image?s resolution on the calculational loop?s execution time. The purpose of developing this method for detecting the visible horizon is to create an indirect vision functionality in augmented reality. We want to combine information from charts and the video stream in a single display. We use the information regarding the horizon?s position in the image to divide it into different areas whose transparency enables either the video or charts.