Decai Huang

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An integer wavelet based multiple logo-watermarking scheme for copyright protection of digital image is presented. A visual meaningful binary logo is used as watermark. The process of watermark embedding is carried out by transforming the host image in the integer wavelet domain. To construct a blind watermarking scheme, wavelet coefficients of HH and LL(More)
Job scheduling algorithm is the key technique in grid management. In order to meet the requirements of high quality QoS in job scheduling of OGSA grid, trust mechanism is added to make the job scheduling system work more effectively in this open, heterogeneous and dynamic grid environment. Utilizing the concept of trust, a trust-driven both-matched grid job(More)
PageRank algorithm is a famous algorithm to mine the Web structure, but it has a drawback of topic-drift. To eliminate the topic-drift of the PageRank algorithm, and after the analysis of existing algorithms, a new algorithm called TC-PageRank algorithm is put forward. The TC-PageRank algorithm is based on fictitious file vector and correlation measure of(More)
In the area of content-based image retrieval, the feature-matching algorithm based on color histogram intersection ignores the similarity of different color. In located. Then, we proposed extreme value weighted mean image-matching algorithm based on sphere similarity of match stage, we adopted correlation classifier to recognize experimental results show(More)
A hybrid genetic algorithm is presented for minimizing the range of lateness and make-span on parallel non-identical machines in this paper, and a dynamic fitness function is introduced too. The coding method of the hybrid genetic algorithm (HGA) is very simple because it utilized the property of effective optimal algorithm for solving the corresponding(More)
In the area of content-based image retrieval, the feature-matching algorithm based on color histogram intersection ignores the similarity of different color. In order to solve this problem, this paper presents a new image-matching algorithm based on sphere similarity of color histogram intersection in the GRB space. The experimental results show that the(More)
BACKGROUND AND OBJECTIVE Transfer function (TF) is an important parameter for the analysis and understanding of hemodynamics when arterial stenosis exists in human arterial tree. Aimed to validate the feasibility of using TF to diagnose arterial stenosis, the forward problem and inverse problem were simulated and discussed. METHODS A calculation method of(More)
The segregation of binary mixtures in a filled rotating double-walled drum is explored by simulations. Based on the characteristics of self-gravity and the centrifugal force, we argue that both percolation and buoyancy effects dominate the segregation process. The simulational results show that up to long enough times the segregation state is controlled by(More)