Digital images are often affected by impulse noise during image acquisition and/or transmission over communication channel. A Neural Based Post Processing Technique for Image Quality Enhancement (NBPPTIQE) for enhancing digital images corrupted by impulse noise is proposed in this paper. The proposed filter is an intelligent filter obtained by aptly combining a Nonlinear Filter (NF), Modified C...

This paper presents the robust design of Linear phase high-pass finite impulse response (FIR) digital filter using evolutionary technique called Differential Evolution (DE) and the impact of different mutation strategies have been studied based on minimum fitness function for the optimal design of FIR filter. DE is stochastic population based optimization algorithm which is used for multidimens...

This paper introduces a stochastic evolutionary algorithm known as hybrid Differential Evolution (DE) for the design of digital High pass FIR filter. It combines the features of both the basic DE and exploratory move for the fine tuning of DE parameters locally as well as globally in the promising search area. A multi-objective function having different performance requirements of minimum magni...

In this paper, an algorithmic scheme is proposed to estimate different local characteristics of image structures using discrete geometry tools. The arithmetic properties Digital Straight Lines and their link with the Farey sequences allow introduction a new directional filter. incremental process, it provides geometric information at each point in image, such as length, orientation thickness lo...

Digital filters plays very important role in the processing of the low frequency signals. Numbers of biomedical signals are of the low frequency. The ECG signal, which preliminary represents the condition of the heart. It has the frequency range form .5 Hz to 100Hz. Artifacts introduced in the signal create numerous difficulties against the physician. The work is the step in the direction for r...

This paper presents an outline for removing noise in digital images. We see that the real time images are get more corrupted while acquisition, processing and transmission. As we deal 98% of our daily work on real time application data. So to suppress noise and elimination of noise from real time images is a research area for the developers, that how to predict noise and to remove that one nois...

The research on optimal design of Infinite-impulse response (IIR) filter design based on various optimization techniques including evolutionary algorithms EA’s, has gained much attention in recent years. Previously, digital IIR filter’s parameters are encoded using floating point representation. Fixed point representation are used for encoding of digital IIR filter’s parameters because it effec...