An efficient robust watermarking scheme for digital images is presented, based on the discrete Gabor transforms (DGT), The watermark in digital images is hidden by changing their DGT coefficients to represent special ...
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An efficient robust watermarking scheme for digital images is presented, based on the discrete Gabor transforms (DGT), The watermark in digital images is hidden by changing their DGT coefficients to represent special low frequencies. In the proposed watermark-checking algorithm, the geometric transforms and corresponding matching method are applied for geometric transformed images in order to recover them for watermark-checking. The proposed scheme was tested by StirMark 4.0, a well-known software for testing watermarking schemes, and it performed successfully in almost all testing cases with high robustness and efficiency.
The theory of granule computing based on the quotient space is one of the three main granule computing theories. The emphasis is on the structure of the quotient space theory in this paper. Comparing with Rough Set th...
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Inspired by the quotient space theory and fuzzy concept, it is pointed out that the foundation of success of FCS (fuzzy control system) does not refer to the value-getting of MFs (membership functions) and the success...
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Inspired by the quotient space theory and fuzzy concept, it is pointed out that the foundation of success of FCS (fuzzy control system) does not refer to the value-getting of MFs (membership functions) and the success can be achieved by obtaining the mutual relationships between elements, namely the relationships of their order. The hierarchical structure, which is made up of order relation, is the essential characteristic of fuzzy control. It's the necessary condition of the success of FCS. At the end of this paper, the logical control system based on order relation is given. Its controlling rules are more accustomed to the mental habits of the mankind and it may achieve the ideal performance of steady state. MATLAB's simulation demonstrates the above-mentioned conclusions.
The quotient space theory obtains a fusion model about semi-order structure under the condition of consistency information, harnessing topology relation among elements of the universe space and hierarchical structure....
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The quotient space theory obtains a fusion model about semi-order structure under the condition of consistency information, harnessing topology relation among elements of the universe space and hierarchical structure. It has great significance to forming a unified theory structure about information fusion technology. This paper gets a new semi-order structure fusion model under the condition of inconsistency information and proves incompleteness of its semi-order lattice . An example is presented in the paper at last as well as a new method is indicated for Bayesian network structure learning.
Stereo matching is one of the most active research areas in computer vision. In this paper, a fast stereo matching algorithm by means of epipolar constraint and multiresolution approach was presented. The searching sc...
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Stereo matching is one of the most active research areas in computer vision. In this paper, a fast stereo matching algorithm by means of epipolar constraint and multiresolution approach was presented. The searching scope of corresponding pixels in the original image is obtained and has diminished a lot based on multiresolution approach. Then intensity correlation principle and epipolar constraint can be applied to get the stereo matching results in this scope. In this way, we reduce the search time for correspondence and ensure the validity of matching. The experimental results show this algorithm is effective and efficient.
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