An Underwater Image Real-Time Registration Approach Based on SURF

Abstract:

In order to meet the demands of real-time performance and robustness for underwater image registration, a novel image registration method based on the SURF (Speeded-Up Robust Features) algorithm is proposed. During the image acquisition process, noise was generated inevitably because of many influencing factors such as atmospheric turbulence, camera defocus during image capturing or relative motion between the camera and the object. Firstly, median filter method was involved during the image preprocessing for underwater image contrast enhancement. Secondly, the SURF algorithm was used to obtain the interest points of the reference and registering images, and the nearest neighbor method was applied to search for coarse matching points. To obtain the precise matching points, the dominant orientations of the coarse matching points were used to eliminate the mismatching points. Finally, the precise matching points were adapted to calculate the mapping relationship between the registering and reference images, the bilinear interpolation method was applied to resample the registering image, and then the registered image was obtained. Experimental results indicated that the proposed preprocessing methods obviously enhanced the image quality, and the introduced image registration approach effectively improved the real-time performance and guaranteed the robustness at the same time.

• Periodical: Applied Mechanics and Materials (Volume 437)
• Pages: 888-893
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.437.888
• Online since: October 2013
• Authors: Chao Li, Yong Jie Pang, Ming Wei Sheng*, Hai Huang
• Keywords: Dominant Orientation, Image Registration, SURF Algorithm, Underwater Image

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