23 September 2014 High accuracy image restoration method for seeing through water
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This paper presents an algorithm for recovering an image from a sequence of distorted versions of it, where the distortions are caused by a wavy water surface. A robust non-rigid image registration technique is employed to determine the pixel shift maps of all the frames in the sequence against a reference frame. An iterative image dewarping algorithm is applied to correct the geometric distortions of the sequence. A non-local means filter is used to mitigate noise and improve the signal-to-noise ratio (SNR). The performance of our proposed method is compared against the state-of-the-art method. Results show that our proposed method performs significantly better in removing geometric distortions of the underwater images.
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Kalyan K. Halder, Kalyan K. Halder, Murat Tahtali, Murat Tahtali, Sreenatha G. Anavatti, Sreenatha G. Anavatti, "High accuracy image restoration method for seeing through water", Proc. SPIE 9217, Applications of Digital Image Processing XXXVII, 921702 (23 September 2014); doi: 10.1117/12.2061643; https://doi.org/10.1117/12.2061643

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