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140 articles for “filters”
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Image Denoising Based on Wavelet Transform Using Weighted Highpass Filtering Coefficient and Various Filters
Abstract: Abstract— Image denoising (ID) is a material issue found in various image processing (IP) for preservation of image quality and information. There are numerous technique of denoising image. The most necessary property of ID model is that it should completely reduce noise as much as possible and edge preservation. Various algorithm has been developed in past but still it has scope for enhancement. This paper gives a insight view of …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 3, Issue 2, 2017 · pp. 1–7 Read article
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Denoise Mechanism for Digital Images
Abstract: With the rapid advancement of today’s information technology, the analysis of digital images has endured rapid evolution in technology and is frequently utilized in everyday situations and enterprises. There are specific problems in the transmission process. Images are influenced by the compression of data and communication. In color image processing, a variety of well-established approaches to suppressing noise are offered. The variety of noise corrupting the image determines the nature …
Published in International Journal of Image Processing and Pattern Recognition · Vol. 10, Issue 2, 2024 · pp. 11–17 Read article
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Use of Titanium as filter on chimney
Abstract: Industrial chimneys are one of the largest contributors to air pollution, releasing a wide range of harmful gases and fine particulate matter into the atmosphere. These emissions significantly degrade environmental quality and contribute to long-term public health risks such as respiratory diseases and cardiovascular complications. Traditional air pollution control devices used in industrial exhaust systems, including electrostatic precipitators and bag filters, often struggle with high operational costs, frequent maintenance, and …
Published in International Journal of Analytical and Applied Chemistry · Vol. 11, Issue 2, 2025 · pp. 120–126 Read article
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Simulation and Analysis of Grid-connected PV System with Active Filter based on P-Q Theory
Abstract: This paper presents a comprehensive analysis of two grid-connected photovoltaic (PV) systems, one with a 100-kW capacity and the other with a 25-kW capacity, incorporating an active filter based on the Instantaneous Reactive Power Theory (P-Q theory). In comparison to passive filters, the active filter based on the P-Q theory offers several advantages. While passive filters are limited in their ability to adapt to varying grid conditions and load profiles, …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 9, Issue 2, 2023 · pp. 1–11 Read article
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Denoising of Computer Tomography images using Wavelet based Multiple Thresholds Switching (WMTS) filter
Abstract: Computer Topography images are often corrupted by salt and pepper noise during image acquisition and /or transmission, reconstruction due to a number of non-idealities encountered in image sensors and communication channels. Noise is considered to be the number one limiting factor of CT image quality. A novel decision-based filter, called the wavelet based multiple thresholds switching (WMTS) filter, is used to restore images corrupted by salt-pepper impulse noise. The filter …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 1, Issue 1, 2015 · pp. 1–6 Read article
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AI-Optimized Reconfigurable Microstrip Bandpass Filters for DynamicSpectrum Access in 6G Networks
Abstract: The evolution toward sixth generation (6G) wireless networks introduces unprecedented demands on spectral efficiency, ultra-low latency, and real-time adaptability to dynamic radio environments. Central to this transformation is the requirement for intelligent, spectrum-agile radio front ends that can seamlessly operate across heterogeneous frequency bands. Dynamic Spectrum Access (DSA) addresses this challenge by enabling transceivers to autonomously detect, evaluate, and utilize the most suitable spectrum opportunities. The realization of DSA in …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 30–38 Read article
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An Innovative Approach to Improve Cleaning Efficiency of Filter Cake in Gas & Oil Drilling Wells
Abstract: Drilling fluids are the complex fluids used for the drilling of oil and gas wells. The effective completion of an oil and gas well and invention of hydrocarbons from the oil and gas reservoir depends to a significant extent on the properties of drilling fluids selected during drilling operations. Filter cake stick provisionally until it is removed by dissolvers at the last stage of the well drilling. Theoretically the filter …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 1, 2017 · pp. 24–28 Read article
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Water Filtration Through Fly Ash, Sand and Charcol Filter
Abstract: This project focuses on the implementation of a sequential filtration system using fly ash, sand, and activated charcoal filter beds to treat contaminated quarry water and contaminated cleaning water from a rubber factory The goal is to diminish the concentrations of diverse contaminants found in the wastewater and enhance its overall qual The goal is to diminish the concentrations of diverse contaminants found in the wastewater and enhance its overall …
Published in International Journal of Water Resources Engineering · Vol. 9, Issue 2, 2023 · pp. 21–26 Read article
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PI CONTROLLER BASED SHUNT ACTIVE POWER FILTER FOR HARMONIC REDUCTION
Abstract: The active power filter is an advanced power electronic device, which can be used for compensating harmonics and improving power quality. The different types of active power filter are shunt active power, series active power, hybrid active power filter. Among the three types, The shunt active power filter injects a suitable compensating current at point of common coupling so that the harmonics present in the line are cancelled out and …
Published in International Journal of Electrical Power System and Technology · Vol. 1, Issue 1, 2015 · pp. 11–26 Read article
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Book Recommendation System Using Item-based Collaborative Filtering Technique and Cosine Similarity
Abstract: The quality of generated recommendations in collaborative filtering recommendation algorithms is determined by how accurately the similarity is calculated. There are multiple ways to improve the accuracy of similarity calculation. All the methods include calculation of user-ratings matrix, user-attribute matrix and item-attribute matrix. Collaborative filtering has two approaches namely user-based Collaborative Filtering and item-based collaborative filtering. This paper discusses item-based collaborative filtering using cosine similarity for determining similar items.
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 6, Issue 2, 2020 · pp. 20–27 Read article
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Design A Kaiser Window Based Digital Filter by Using GRNN
Abstract: In this paper, we have designed the digital filter based on Kaiser Window function using ANN. Firstly we have designed the 10th order digital filter based on Kaiser Window function then calculate the coefficient of designed filter. Similarly this process is repeated for the 15th and 20th order. We have normalized the frequency and designed filter at frequency ranges 0.05 to 0.95 Hz. Then we calculated the coefficients of filter …
Published in International Journal of Microwave Engineering and Technology · Vol. 2, Issue 1, 2016 · pp. 39–44 Read article
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COMPARISION OF MICROSTRIP BAND PASS AND BAND REJECT FILTER AT GSM BAND (1850MHz) USING DGS TECHNIQUE
Abstract: ABSTRACT- In microwave communication filters are more essential high frequency component. To improve the insertion loss the DGS technique is used. DGS i.e, (defected ground structure) is a technique where cuts are drawn on ground to impove the results and reduce the size of filters. Band pass and band reject filters are the filters which pass and reject the frequency. A band pass and band reject filter is designed with …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 2, 2017 · pp. 50–56 Read article
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Monitoring the Operation of Mobile Air Compressor Component of Filters Using Reliability Analysis Concepts
Abstract: The performance of filter component was monitored in a mobile air compressor operating in a gas plant facility located in Rivers State. The investigation covers the monitoring of the numbers of failure, downtime, and computation failure rate, mean time between failure, reliability, unreliability, availability and unavailability. In this study, it was experienced that the failures occur due to over usage as well as presence of particles in the cooling fluid …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 1, 2023 · pp. 18–22 Read article
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Digital Pulse Compression Waveform Generation by Using of Digital Matched Filter
Abstract: Digital pulse compression is the technique for detection of the targets through radar. It is done by Matched Filter in signal processing system. The presence of signal with noise is compressed. At some finite interval of time the high peak amplitude of signal with narrow bandwidth gives the idea of the number of targets present away from the radar. Matched filter gives the signal to noise ratio at the receiver …
Published in International Journal of Broadband Cellular Communication · Vol. 3, Issue 1, 2017 · pp. 34–39 Read article
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A Genetic Algorithm for Optimization of MSE & Ripples in Linear Phase Low Pass FIR Filter & Also Compare with Cosine Window Techniques
Abstract: Cosine Window Techniques such as Hamming, Hanning etc. are used to simply design the Finite Impulse Response (FIR) digital Filters. Window function is a scientific function which works on Mathematics by calculating the impulse response of best digital filters. Windowing function is mainly conciliation between the reduction of ripples and Mean Square Error (MSE). But in the proposed research work; Genetic Algorithm (GA) reduces more MSE as well as ripples …
Published in International Journal of Digital Communication and Analog Signals · Vol. 1, Issue 1, 2015 · pp. 9–15 Read article
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Building Movie Recommendation System using Clustering, Collaborative Filtering, Matrix Factorization and improving the accuracy of the system by incorporating Opinion Mining
Abstract: Recommendation systems is a part of information filtering system which are gaining tremendous popularity and are one of the most used systems these days because of their ability to make suitable predictions depending upon the user’s requirements. A recommendation system is a system that predicts the rating, preference or reviews that a user would give to a particular item. They are used in a variety of fields including movies, music, …
Published in International Journal of Digital Communication and Analog Signals · Vol. 6, Issue 2, 2020 · pp. 1–5 Read article
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Performance Comparison of the two-stage Kalman Filtering Techniques for Density Prediction
Abstract: The advanced optimal partitioned state Kalman estimator (OPSKE) developed to overwhelm these problems of traditional approaches. In this article, we compare performance of the OPSKE with the OTSKE and the AUSKE in the maneuvering target tracking (MTT) badly behaved. We provide some analytic results to demonstrate the computational advantages of the OPSKE. Author of this paper compare these two algorithms with target tracking problem, because in that problem they dealing …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 2, Issue 1, 2016 · pp. 8–16 Read article
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Design Technique of FIR Digital Filter Using Various Window Function
Abstract: This paper presents a design approach of finite impulse response (FIR) digital low pass, high pass, band pass and stop band filter using window method. In this work FDA tool has been used for design of FIR digital filter with hamming, hanning and Kaiser window function because better frequency response has been achieved by these window for design of all digital FIR filter but specially for band pass and stop …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 1, 2017 · pp. 23–28 Read article
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A Comprehensive Approach to Design and Implement a Fast FIR Filter for Signal Processing Applications
Abstract: Signal processing, communications, and computers all rely heavily on the field of digital signal processing (DSP). In DSP important application is Finite impulse response (FIR) filter. The initial objective of this inquiry is to present an approach for an improved framework of a FIR digital filter through the programme level to the hardware level. It influences the decision on design approaches, architecture, and the efficient use of hardware. The window …
Published in International Journal of Microwave Engineering and Technology · Vol. 9, Issue 1, 2023 · pp. 1–19 Read article
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Multifunctional Shunt Hybrid Power Filter and Thyristor Controlled Reactor for Distributed Generation Integration and Power Quality Improvement
Abstract: This project presents a multifunctional PV fed SHPF-TCR compensator for achieving maximum benefits from these grid-interfacing inverters. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. An inverter can be used as power converter to insert the power created from RES to the grid, and shunt APF to reimburse load current harmonics. A SHPF-TCR compensator of a TCR and a SHPF has been …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 3, Issue 2, 2017 · pp. 13–25 Read article