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Images are often corrupted by impulse noise in the procedures of image acquisition and transmission. In this paper, we propose an efficient denoising scheme and its VLSI architecture for the removal of random-valued impulse noise. To achieve the goal of low cost, a low-complexity VLSI architecture is proposed. We employ a decision-tree-based impulse noise detector to detect the noisy pixels, and an...
An efficient edge-preserving algorithm for removal of random-valued impulse noise from corrupted images is proposed in this paper. We employ an efficient impulse noise detector to detect the noisy pixels, and an edge-preserving filter to reconstruct the intensity values of noisy pixels. Extensive experimental results show that the proposed technique not only preserves the edge features, but also obtains...
Multistage dry Roots vacuum pumps (MDRVPs) are vacuum equipments widely used in IC industry. This paper analyzes the influence mechanism of dynamic unbalance to vibration and noise of rotor axis in MDRVPs, and calculates the vibration deformation of the rotor axis caused by dynamic unbalance through the finite element method. Moreover, a series of experiments on noise source identification are carried...
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