Trichy Engineering College
Trichy Engineering College
Balakrishnan U.,Trichy Engineering College
Journal of Innovative Optical Health Sciences | Year: 2017
Glaucoma is an eye disease that usually occurs with the increased Intra-Ocular Pressure (IOP), which damages the vision of eyes. So, detecting and classifying Glaucoma is an important and demanding task in recent days. For this purpose, some of the clustering and segmentation techniques are proposed in the existing works. But, it has some drawbacks that include inefficient, inaccurate and estimates only the affected area. In order to solve these issues, a Neighboring Differential Clustering (NDC) - Intensity Variation Masking (IVM) are proposed in this paper. The main intention of this work is to extract and diagnose the abnormal retinal image by identifying the optic disc. This work includes three stages such as, preprocessing, clustering and segmentation. At first, the given retinal image is preprocessed by using the Gaussian Mask Updated (GMU) model for eliminating the noise and improving the quality of the image. Then, the cluster is formed by extracting the threshold and patterns with the help of NDC technique. In the segmentation stage, the weight is calculated for pixel matching and ROI extraction by using the proposed IVM method. Here, the novelty is presented in the clustering and segmentation processes by developing NDC and IVM algorithms for accurate Glaucoma identification. In experiments, the results of both existing and proposed techniques are evaluated in terms of sensitivity, specificity, accuracy, Hausdorff distance, Jaccard and dice metrics. © 2017 The Author(s).
Abdul Razak K.,SRM University |
Rajakumar K.,Trichy Engineering College
International Journal of Applied Engineering Research | Year: 2015
A systematic theory of reliability is based on probability theory. It is well known that the conventional reliability analysis using the probabilities has been found to be inadequate to handle the uncertainty of failure in data and modeling. The fuzzy set theory provides an useful tool to complement conventional reliability theories. This paper proposes the transmission flow system design in series-parallel structure to evaluate the maximum reliability subject to the system cost. The co-efficient of variation (CV) is introduced to estimate each membership function. This approach is to find minimum CV with high reliability estimate. © Research India Publications.
Priyadarshini K.,Trichy Engineering College |
Jackuline Moni D.,Karunya University
International Journal of Applied Engineering Research | Year: 2016
Block matching algorithm for motion estimation with the concept of two optimization techniques Particle Swarm Optimization (PSO) and Differential Evolution (DE) are carried out. Motion Estimation results shows that the DE algorithm for motion estimation gives improved PSNR value when compared with PSO algorithm. © Research India Publications.
Jeyalakshmi C.,Trichy Engineering College |
Krishnamurthi V.,Trichy Engineering College |
Revathy A.,Saranathan College of Engineering
2011 - International Conference on Signal Processing, Communication, Computing and Networking Technologies, ICSCCN-2011 | Year: 2011
This paper presents the performance of the deaf speech recognition using Hidden markov model. Even persons those having perfect nasal and oral cavity cannot produce sounds if they are deaf, since they cannot hear anything. If deafness is found earlier, then using speech therapist they can be made to reproduce sounds at the maximum. Depending on the degree of hearing they are deaf, profoundly deaf and hard of hearing. At the same time if deafness is found by later stage, they cannot produce sounds properly and no one can understand their speech. For analysis we have considered the deaf students whose speeches are intelligible to some extent. The characteristics of deaf speech such as pitch, formants are different from that of normal speech and due to high variability in deaf speech signal characteristics, performance of the recognition system may also degrade compared to normal speech. The uttered deaf speech is recognized using HMM with MFCC features and recognition accuracy is compared for each isolated digit. If it is extended for continuous speech then communication between deaf and normal is satisfied. Deaf speech is taken from 10 children in the age group of 5-10 years from Maharishi vidya mandir centre for deaf. © 2011 IEEE.
Balamurugan P.,Trichy Engineering College |
Srikanth R.,SASTRA University
International Journal of Applied Engineering Research | Year: 2015
This article surfaces some of the characteristics of what is referred to as a zeckendorf triangle which is composed of Lucas number multiples of the Lucas sequence. It ascends Lucas number re- lated to the Fibonacci numbers, pascal array. © Research India Publications.
Sakthivelu A.,Anna University |
Anusuya M.,Trichy Engineering College |
Joseph Prince J.,Anna University
Journal of Ovonic Research | Year: 2011
ZnO thin films were prepared by simple and cost effective Successive Ionic Layer Adsorption and Reaction (SILAR) technique. Zinc sulphate and sodium hydroxide solution were used as a source of the formation of ZnO thin films. The structural, morphological and optical properties of the ZnO films were studied. Structural hexagonal wurtzite structure ZnO thin films were identified by X-ray diffraction with preferential orientation along (002) plane. The average grain size of the film is calculated using Scherer's relation and it is in the order of nanometers. The surface morphological studies of the films were analyzed by scanning electron microscope. The optical properties of the films were studied by measuring their optical transmittance as a function of wavelength. UV-VIS spectrum of the film showed that the optical band gap decreases with increase in the molarities of precursor solution.
Balakrishnan U.,Trichy Engineering College |
Venkatachalapathy K.,Trichy Engineering College |
Marimuthu G.S.,Saranathan College of Engineering
Current Diabetes Reviews | Year: 2015
Diabetic Retinopathy (DR) is an eye disease, which may cause blindness by the upsurge of insulin in blood. The major cause of visual loss in diabetic patient is macular edema. To diagnose and follow up Diabetic Macular Edema (DME), a powerful Optical Coherence Tomography (OCT) technique is used for the clinical assessment. Many existing methods found out the DME affected patients by estimating the fovea thickness. These methods have the issues of lower accuracy and higher time complexity. In order to overwhelm the above limitations, a hybrid approaches based DR detection is introduced in the proposed work. At first, the input image is preprocessed using green channel extraction and median filter. Subsequently, the features are extracted by gradient-based features like Histogram of Oriented Gradient (HOG) with Complete Local Binary Pattern (CLBP). The texture features are concentrated with various rotations to calculate the edges. We present a hybrid feature selection that combines the Particle Swarm Optimization (PSO) and Differential Evolution Feature Selection (DEFS) for minimizing the time complexity. A binary Support Vector Machine (SVM) classifier categorizes the 13 normal and 75 abnormal images from 60 patients. Finally, the patients affected by DR are further classified by Multi-Layer Perceptron (MLP). The experimental results exhibit better performance of accuracy, sensitivity, and specificity than the existing methods. © 2015 Bentham Science Publishers.
Jeyalakshmi C.,Trichy Engineering college
International Review on Computers and Software | Year: 2013
Most of the noise suppression algorithms concentrated on normal hearing listeners. This study investigates the use of Recursive least square filter in improving automatic speech recognition of the hearing impaired speech in noisy environment. The children who are deaf or hearing impaired suffers in many ways regarding education and in public places to communicate with the normal speakers since their voices are difficult to understand due to guttural and monotone nature even though they undergone speech therapy. Because some of the sounds cannot be taught, only we can feel. To develop the recognition system for their speeches in practical situation, we have analyzed the recognition accuracy of the hearing impaired speech in various noise environments where their speech becomes still worse due to background noises. Here we have considered babble, white and factory noise in different SNR levels such as 10db, 5db, 0db,-5db and the recognition results were obtained as 27.8% for babble noise, 10.6% for white noise and 13.6% for factory noise when SNR is 0db. Spectral subtraction is initially applied and due to its poor performance it is shown that, application of Adaptive recursive least square filter improves significantly the recognition performance with filter order 128, even for the low SNR level 0db, such as 70.0% for babble noise, 67.4% for white noise and 61% for factory noise. The result suggests that regardless of impaired speech, in the practical noisy environment also we can achieve comparable recognition accuracy for hearing impaired speeches. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.
Daniel R.S.,Trichy Engineering College |
Suganthi S.,Christ University
ICIIECS 2015 - 2015 IEEE International Conference on Innovations in Information, Embedded and Communication Systems | Year: 2015
The aim of the paper is to design, and simulate circular spike Coplanar Waveguide (CPW) fed antenna for wireless applications. The size of the antenna is very small occupying a space of 36mm × 36mm including the substrate board. The antenna is designed using FR-4 substrate of thickness 1.6mm with dielectric permittivity of 4.4. The Coplanar Waveguide (CPW) fed system is used, so we can avoid double side printed board. This proposed antenna covers the bandwidth frequency range from 2.85GHz to 3.31GHZ and 5.09GHz to 5.65GHz for various wireless applications. The antenna design and performance are analyzed by using High Frequency Structure Simulator (HFSS) electromagnetic software for wireless applications according to frequency bands. The results of proposed antenna simulation on return loss, VSWR, gain and directivity are calculated. © 2015 IEEE.
Alex M.,Trichy engineering college |
Poornima D.,Trichy engineering college |
Karthika R.,Trichy engineering college
Advanced Materials Research | Year: 2014
This project presents the analyzed results of an integrated offshore wind and seashore wave farm fed to an onshore power grid through a unified power flow controller (UPFC) to simultaneously achieve power-fluctuation mitigation and stability improvement. A damping controller of the proposed UPFC is designed by using modal control theory to render adequate damping characteristics to the studied system. A frequency-domain scheme based on a linear system and a time-domain scheme based on a nonlinear system. From time domain analysis, the UPFC is designed. The proposed UPFC joined with the designed damping controller can effectively stabilize the studied integrated OWF and SWF under various interruption conditions. The fluctuated power injected in to the power grid can also be effectively mitigated by the proposed control scheme. © (2014) Trans Tech Publications, Switzerland.