An Efficient Vlsi Architecture For Removal Of Impulse Noise In Image Using Edge Preseving Filter
Mr.R.Muralikrishnan Mr.R.Muralikrishnan · IOSR Journal of VLSI and Signal processing · 2013
Images are often corrupted by impulse noise in the procedures of image acquisition and transmission.In this paper, we propose An Efficient VLSI Architecture for Removal of Impulse Noise in Image using edge preserving filter, to achieve low-complexity VLSI architecture.We employ a decision-tree-based impulse noise detector to detect the noisy pixels, and an edge-preserving filter along with mathematical morphological filter to reconstruct the intensity values of noisy pixels.Furthermore, an adaptive technology is used to enhance the effects of removal of random valued impulse noise.Our extensive experimental results demonstrate that the proposed technique can obtain better performances in terms of both quantitative evaluation and visual quality than the previous lower-complexity methods.Moreover, the performance can be comparable to the higher-complexity methods.The VLSI architecture of our design yields a processing rate of about 200 MHz by using TSMC 0.18μm technology.The design requires only low computational complexity and two line memory buffers.Its hardware cost is low and suitable to be applied to many real-time applications.