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This paper proposes a robust registration and alignment framework for multiple point clouds using low rank and sparse decomposition. A coarse registration phase utilizing Huber-ICP is firstly performed to roughly align all the point clouds to a same location, and then sparse and low rank decomposition is applied to extract the low rank subspace of all the point clouds, which is expected to be outlier...
In the watermarking algorithm of the medical image, the principal problems faced are how to determine the region of interest (ROI) and improve the hiding capacity. This paper proposes a robust multiple watermarks algorithm for the medical image based on DWT and DCT, which can effectively solve the referred problems. The algorithm combines the visual feature vector of images, encryption technology...
In the paper, robust multiple watermarks of medical volume data using 3D-DFT is proposed. The part of sign sequence of 3D-DFT coefficients are used as feature vector, which is utilized to enhance the robustness against Gausian noise, JPEG compression, Median filter and cropping attacks. Moreover, the content of medical volume data remains unchanged with our proposed algorithm which is one kind of...
In the paper, robust multiple watermarks of medical volume data using 3D-DWT and 3D-DFT is proposed. The part of sign sequence of 3D-DWT and 3D-DFT coefficients are used as feature vector, which is utilized to enhance the robustness against Gaussian noise, JPEG compression, Median filter and Cropping attacks. Moreover, the content of medical volume data remains unchanged with our proposed algorithm...
It is desirable to embed multiple diagnosis results into one medical volume data. Existing methods are lack of robustness. Robust multiple watermarks of medical volume data using 3D DWT-DCT is proposed to deal with this problem. The part of sign sequence of 3D DWT-DCT coefficients are used as feature vector, which is utilized to enhance the robustness against rotation, scaling, translation attacks...
Medical images must be stored in a secure way to preserve unauthorized disclosure of patient data. This paper proposes an algorithm of robust multiple watermarks to serve these purposes using DWT and DFT. A part of sign sequence of DWT and DFT coefficients are used as feature vector for enhancing the robustness against rotation attacks, scaling attacks, translation attacks and cropping attacks. Moreover,...
In this paper, we propose a novel approach for robust visual tracking. To separate the foreground from the background, we propose a novel Boosted Color Soft Segmentation (BCSS) algorithm and incorporate Independent Component Analysis with Reference (ICA-R) into the tracking framework. In addition, we design a scheme to fuse and update BCSS and ICA-R. We also propose adaptive scale of tracking window...
This paper proposes a new watermarking method in the curvelet domain. The curvelet transform was developed in order to represent edges along curves much more efficiently than the traditional transforms. We apply the transform to watermarking and evaluate the effectiveness of the method. Our watermarking algorithm embeds a watermark in curvelet coefficients which are selected by a criterion whether...
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