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Browsing Makale Koleksiyonu by Author

Browsing Makale Koleksiyonu by Author "Akgün, Devrim"

Now showing items 1-9 of 9

A method for the Computational Frequency Sweep Analysis of Nonlinear ODEs using GPU Acceleration

Akgün, Devrim; Ilyas Cankaya; Sezgin Kacar (TAYLOR & FRANCIS LTD, 2019)

Computational sweep analysis of nonlinear ODEs (ordinary differential equations) is of importance in engineering system analysis and design. Sweep analyses usually demand intense computational power according to the number ...
A practical parallel implementation for TDLMS image filter on multi-core processor

Akgün, Devrim (SPRINGER HEIDELBERG, 2017)

In this study, parallel implementation of adaptive image filtering algorithm based on two-dimensional least mean square method (TDLMS) where the weights are continuously adjusted during filtering was realized by proposed ...
A symbolic algorithm for the automatic computation of multitone-input harmonic balance equations for nonlinear systems

Akgün, Devrim; Çankaya, İlyas (SPRINGER, 2009)

A symbolic algorithm is developed for the automatic generation of harmonic balance equations for multitone input for a class of nonlinear differential systems with polynomial nonlinearities. Generalized expressions are ...
Accelerated method for the optimization of quadratic image filter

Akgün, Devrim (IS&T & SPIE, 2019)

Quadratic image filter involves the second-order multiplications of an input image mask in addition to linear terms, and determining the weights of the quadratic filter using optimization methods requires intense computational ...
An Accelerated Method for Determining the Weights of Quadratic Image Filters

Suleyman Uzun; Akgün, Devrim (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2018)

Quadratic filters are usually more successful than linear filters in dealing with nonlinear noise characteristics. However, determining the proper weights for the success of quadratic filters is not straightforward as in ...
Frequency response investigations of multi-input multi-output nonlinear systems using automated symbolic harmonic balance method

Akgün, Devrim; Çankaya, İlyas (SPRINGER, 2010)

The frequency response characteristics of MIMO systems are investigated by using harmonic balance equations. For this purpose, the algorithm for the automatic generation of harmonic balance equations is extended to include ...
GPU accelerated dynamic functional connectivity analysis for functional MRI data

Akgün, Devrim; Uenal Sakoglu; Johnny Esquivel; Bryon Adinoff; Mutlu Mete (PERGAMON-ELSEVIER SCIENCE LTD, 2015)

Recent advances in multi-core processors and graphics card based computational technologies have paved the way for an improved and dynamic utilization of parallel computing techniques. Numerous applications have been ...
GPU accelerated training of image convolution filter weights using genetic algorithms

Akgün, Devrim; Pakize Erdogmus (ELSEVIER SCIENCE BV, 2015)

Genetic algorithms (GA) provide an efficient method for training filters to find proper weights using a fitness function where the input signal is filtered and compared with the desired output. In the case of image processing ...
SEAM CARVING BASED IMAGE RESIZING DETECTION USING HYBRID FEATURES

Zehra Karapinar Senturk; Akgün, Devrim (UNIV OSIJEK, TECH FAC, 2017)

Detection of seam carving-based digital image resizing is a challenging task in image processing field since the method investigates the images on hand semantically. Resizing with seam carving is realized by inserting or ...