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Based on the chaos anti-control theory, a new Lorenz hyper chaotic system family is proposed by adding a linear controller to the three dimensional autonomous Lorenz system family in this paper. It has been verified that the systems in the newly proposed family have the possibility of hyper chaos by analyzing their symmetry, dissipation, the stability of their equilibrium points, as well as the Lyapunov...
Based on the Chaotic Coupled Map Network (CCMN), a novel scheme for constructing Hash functions is proposed in this paper. The scheme changes the original input message and divides it into blocks, which are used as the given CCMN's coupling coefficient. The proposed scheme uses the changed initial message to control the parameters of chaotic system and adjusts the state value of the system at the...
Based on isosceles triangle segmentation, a new approach of color image compression has been proposed by using correlation among RGB components and fractal image compression algorithm in this paper. The encoding process in this paper is composed of two steps: transforming color image into gray-level image according to correlation among RGB and compressing fractal image based on isosceles triangle...
When control charts are used to monitor a process, a standard assumption is that observations from the process at different times are independent random variables. However, the independence assumption is often not reasonable for processes of interest in many applications because the dynamics of the process product autocorrelation in the process observations. The presence of significant autocorrelation...
As manufacturing quality has become a decisive factor in competing in a global market, statistical process control (SPC) is becoming very popular in industries. With advances in sensing and data capture technology, large volumes of data are being routinely collected in automatic controlled processes. There is a growing need for SPC monitoring and diagnosis in these environments, SPC (statistical process...
In the present paper a fast and efficient fractal image encoding method based on sorting the contracted domain pool is presented. Two parameters are used to sort domain pool: the number of hopping and the variance of continuing positive and negative pixels in the given block. With the help of the parameters, the number of domain blocks examined by a range block is reduced dramatically, and thus, the...
As manufacturing quality has become a decisive factor in competing in a global market, statistical process control (SPC) is becoming very popular in industries. With advances in sensing and data capture technology, large volumes of data are being routinely collected in automatic controlled processes. There is a growing need for SPC monitoring and diagnosis in these environments, SPC (statistical process...
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