JORDAN Mario Alberto
congresos y reuniones científicas
On-line Filtering of Sunlight Caustic Waves in Underwater Scenes in Motion
JORDAN, MARIO; TRABES, EMANUEL
Conferencia; 7th International Scientific Conference on Physics and Control; 2015
International Physics and Control Society (IPACS)
In this work we address the problem of removing sunlight caustic waves in underwater imagery obtained by a monocular camera in motion in shallow water. A heuristics for filter design is developed, from which essential properties of the wavy water surface are exploited. The method employs optical flow techniques and curvature predictions of pixel traces during the motion. The result is a practically clean image which is much more coherent with the optical flow corresponding to the scene motion. Design parameters are presented and guidelines to appropriately tune them are given. The performance of the algorithm is demonstrated in many case-studies involving synthetic video sequences as well as film material of real subaquatic scenar- ios.