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Contourlet transform has excellent properties for image representation, such as multiresolution, localization and directionality, which are the key characteristics of human vision system. In this paper, a novel image quality assessment metric based on the characteristics of contourlet coefficients of images is proposed. Firstly, the original image and the distorted images are decomposed into several...
Image quality assessment is a complex problem due to subjective nature of human visual perception. In this paper, a novel image quality assessment is proposed based on the discrete 2-D wavelet transform and the correlation coefficient. Firstly, the reference image and the distorted images are decomposed into several levels by means of the wavelet transform respectively. Secondly, the approximation...
A new method of information theory technology combining with Petri nets was put forward to set up condenser fault diagnosis Petri nets modeling of multi-sensor fusion system in this paper by its operating characteristic. The information entropy is regarded as the standard of reduction to decrease uncertainty between faults and symptoms using the property with maximum information gains to set up optimal...
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