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Venkatesh S.,Sathyabama University | Dorairangaswamy M.A.,AVIT
International Journal of Applied Engineering Research | Year: 2015

Audio and image watermarking is one of the important and popular research areas for ownership protection of the media(image, audio, video etc) to prevent illegal distribution of the media and can also be used for media authentication, broadcast monitoring. A lot of work has been done on images, video watermarking, Audio watermarking as image and video use visual characteristics for watermark embedding, on the other hand, audio use human auditory system (HAS) properties for watermark embedding and watermark detection. A prior knowledge may not be available about various quantization steps that generate the maximum robustness and imperceptibility, thus DE is adopted in our watermarking scheme. In this paper, we propose a new method of DWT-DCT-SVD method are proposed using the DE algorithm to optimize the quantization. The time or frequency –scale modification leads to desynchronization and cause the false detection error, which should be avoided. For the synchronization problem, one way to solve it is to bind the watermark with the invariant audio features. With this method the watermark can be detected without synchronization error. Our scheme, the second way is used to address the desynchronization problem. Synchronization code is adopted in front of the watermark to orient the location of inserted watermark. DWT-DCT coefficients, are split into different segments, the segment length is obtained by dividing the length of the approximate coefficients by the watermark length. © Research India Publications.


David D.B.,Sathyabama University | Rangaswamy D.,AVIT
2014 IEEE International Conference on Computational Intelligence and Computing Research, IEEE ICCIC 2014 | Year: 2015

Clouds in the sky play an important role in predicting the weather. Satellite images provide an excellent view of clouds in the sky which can be certainly used in forecasting the weather. In Satellite images, particularly Infra Red (IR) images play a vital role in many applications. The satellite cloud images contain valuable information for weather forecasting and early prediction of different atmospheric disturbance such as typhoons, hurricanes etc. Very strong winds and torrential rainfall which makes people to become shelter less during cyclones. Therefore in forecasting weather, cyclone prediction has a major role as this is directly related to the lives and households of human being. Many sub-continents in the world have regions that are affected severely because of cyclones. In India, during Madi 2013 cyclone, nearly seven lakh people were forced to relocate, to prevent the loss of human life and their assets. So it is necessary to plan out your day accordingly so that you are not caught off guard. In the literatures, for cyclone prediction which is mainly dependent on Doppler Radars along with Historical Satellite images. Because of its limited range and semi-automatic approach, there is a need to propose a method to automate cyclone prediction, which finds the movement & direction of cyclone towards the given specific locality and relays those information to the subscribed users. Fuzzy C-means clustering is applied for segmenting each cyclone image, followed by extracting features like shape, color and texture for the same. Change Detection is the process of finding changes in multitemporal images. The features obtained from the multi-temporal cyclone IR images are compared with each other in order to determine the movement of cyclone. © 2014 IEEE.


Mredhula L.,Sathyabama University | Dorairangaswamy M.A.,AVIT
International Journal of Applied Engineering Research | Year: 2015

Image Fusion is a process of combining common features of a set of images to get a output image with superior content in terms of subjective as well as objective analysis point of view. Main aim of this work is to present a review on some of the image fusion Techniques. A Comparison of all techniques are done fusing MRI and CT images and analysis is condudcted using various quality measures such as entropy, MSE, PSNR, SSIM, and BRISQUE. CT modalities provide information on denser tissues whereas MRI provides information on soft tissues. For medical applications CT and MRI images are fused for diagnostic purposes. © 2015, Research India Publications.


Mredhula L.,Sathyabama University | Dorairangaswamy M.A.,AVIT
Journal of Medical Imaging and Health Informatics | Year: 2016

An image is always subjected to noise corruption at the time of capturing and transmission. In this faster ultramodern age, visual data expressed as images serve as wonderful means of communication. Yet, it is an ill-fate that the image is usually transformed after transmission due to the interruption of noise. Therefore, noise removal has turned out to be a vital and widespread challenge in image processing. Pre-processing of received image is of major consideration, prior to using it beneficially in applications. Image denoising does the manipulation of image data to render finer quality visual image to the user. Hence, a method that can eradicate salt and pepper noise, Gaussian noise and Impulse noise from the image is being proposed. The denoising technique proposed here consists of two modules to simultaneously eliminate the noise from the images in an effective way. The first module employs pixel surge model (PSM) with probabilistic principal component analysis (PPCA) for image denoising. The second module attempts to enhance the image quality by applying filters like morphological filter and region props on the results of probabilistic principal component analysis. The overall result of denoising that is produced with the proposed method is compared against the previously known method for illustrating the system effectiveness. © 2016 American Scientific Publishers All rights reserved.


Dhinakaran S.,AVIT | Navaneethagopalakrishnan A.,Anna University
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

Leather industries use very broad spectrum of chemicals covering inorganic, natural organic and synthetic organic compounds during the manufacture of leather. The transformation of the raw hide into leather products involves several processing steps consuming considerable amounts of water influence, BDI ratio of the raw effluent is about 0.23-0.25. Even After physicochemical treatment it shows the low biodegradability improvement. For this reason, more efficient methods advanced oxidation processes have been proposed to improve the biodegradability. Among the AOPs, the most widely used technique is solar Fenton process are the most promising technologies for the treatment of tannery waste water. In this study, an attempt was made to assess the feasibility of enhancing the biodegradability of tannery effluent using solar Fenton oxidation process and to study the effect of operating variables viz, pH, concentration of H2O2, dosage of Fe2+ and solar exposure contact time on biodegradability and to study the extent of Biodegradation of solar Fenton treated tannery effluent by anaerobic biological process. The raw tannery wastewater from an industry, located near Chennai was characterized for pH, BOD, COD, TDS, and TSS. The wastewater has very low biodegradability measured in terms of biodegradability index (BDI), was 0.24;COD recalcitrant(CODR) and biorefractory index(BRI) was 3195 and 0.76 respectively. So there is need to improve the biodegradability by solar Fenton process. A laboratory scale study on the biodegradation by solar Fenton process was carried out in a 2L capacity of glass tray of size 16x8x8cm. 500ml of raw effluent was taken in a glass tray. Each experiment was conducted by keeping any two variables constant and varying the third one. The treated sample were analysed for biodegradability in terms of biodegradability index (BDI), COD recalcitrant(CODR) and biorefractory index(BRI). From the biodegradability studies the maximum percent increase in (BDI) was found at H2O2 20g/L, Fe2+ 0.5g/L, pH 3, solar exposure contact time 15 min and liquid depth 1.5 cm. When the experiments were conducted at optimal conditions, the increase in BDI was 81%, the reduction in CODR and BRI were 50% and 25%. The feasibility of further degradation of solar Fenton treated tannery wastewater by biological process (anaerobic process) was studied in batch mode. The solar Fenton treated sample with inoculums gave maximum amount of biogas production was added at the rate of 0.28 m3/day was 412ml and also gave 79% of COD removal. The overall performance of the combined photochemical and biological treatment for COD removal was 85%.From the above concluded that feasibility on enhancement of biodegradability of tannery wastewater, using solar Fenton process was attended and found to be effective for this wastewater.


Kalavathy R.,AVIT | Suresh R.M.,SMIT
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

Electronic medical records form a major source of information regarding a patient's health history. Governments in the present take necessary steps to gather the patient's health history to carry out research and be prepared for any disease outbreaks at large to the citizens. Research has shown that the disease outbreaks are due to the lifestyle, the living conditions and the treatment undergone during the past. Medical literature states that many drugs whose complete safety profile unknown have been approved. Some drugs have shown serious adverse events (SAE), and subsequently withdrawn. There may be some drugs which still show adverse effects on the patients. This work makes an attempt to extract details regarding the drug administration from the electronic medical records (EMR) and employ the Bayesian classifier to find any SAE. It also analyses the various data mining techniques to find adverse events. The main advantage in using EMR is that they can be enhanced with powerful classification algorithms that can deal with images also.


Sastry K.V.K.,AVIT | Rao V.S.,St. Joseph's College
Proceedings - NCET NRES EM 2014: 2nd IEEE National Conference on Emerging Trends in New and Renewable Energy Sources and Energy Management | Year: 2015

The rapid technological development in materials division of Industrial sector, has created curiosity among research community to develop innovative materials with the specified characteristics. One such material is Carbon Fibre Reinforced Carbon (CFRC) composite material, which is used mostly in the fabrication of advanced structures like space shuttles, battle field tanks, missiles etc. Generally these composites are very expensive and the addition of drilling cost of these materials makes them still expensive. Hence, careful selection of proper drilling parameters is required to machine these special composites. The prime objective of this paper is to investigate experimentally to determine the optimal drilling parameters by using GRA method. The drilling experiments were carried out on a CFRC composite plate with TiN coated carbide tool on the computer numerically controlled drilling machine. © 2014 IEEE.


Prabakaran A.,AVIT | Prabakaran A.,Vinayaka Missions University
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

In a developing country like India prone to many disasters like earthquakes and cyclones, the disposal the building debris of buildings collapsed remain as a major issue. The authors have found an interesting method to recycle the building debris. The coarse aggregates derived out of broken glass and broken ceramics are used to pre fabricate funicular shell units to have alternate roofing. This method not only eliminates the debris but also remain as a cost effective technique to arrive at roofing elements for low cost building projects. The authors make a sincere attempt in conducting experimental research on pre-cast FUNICULAR SHELLS with a linear scale factor of 1:2 with the help of model study and arrived at valid findings. In order to minimize the cost, the authors used novel idea of introducing recycled waste materials as coarse aggregates like broken glass pieces and broken ceramic aggregates found as bio non degradable industrial solid waste. The results achieved were quite useful to the construction industry as valid addition to its knowledge base.


Sastry K.V.K.,AVIT | Rao V.S.,St. Joseph's College
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

This paper deals with drilling of Carbon-Carbon composite material and presents the influence of process parameters like Tool point angle,spindle speedand feed rate on the Performance characteristics like Thrust force and Torque of Carbon-carbon composite material by using HSS and TiN coated carbide drill bits. A plan of experiments based on Taguchi's technique has been used to acquire the data. An L27 Orthogonal array is employed to establish the optimal cutting parameters for the desired performance parameters. The drilling experiments were conducted on a CNC Drilling Machine at Anna University campus, Chennai, India. A comparison of the drillingprocess performanceby using both HSS tool and TiN coated carbide tools was also done in this paper.


Lakshmi Narayanan N.,AVIT | Prabhu P.,AVIT
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

Acoustic grating technology for the purpose of removing slag and fouling deposits in coal-fired utility power plant boilers offers great potential. Conventional slag removal methods including soot blowers and water lance cleaning devices are being only partially successful in removing deposits especially from the downstream side of heat transfer tube bundles in the convective pass sections. They also require considerable maintenance and reduce boiler efficiency when in use. This paper work helps to experiment and the performance of boiler furnaces by understanding the effects of heat absorption, increased draft loss, over-heating of tubes and heat lost. This thereby, confirmed the effect of the lost performance of the overall boiler, and hence helps to develop means of eliminating the growth of either slagging or fouling or both (opacity). This is often found when a furnace starves of air or combustion of such materials as thin paper where fly ash partially fills the combustion chamber. It is necessary to remove this accumulation daily in order to increase efficiency of Boiler and life of tubes/coils. Effective cleaning by using acoustic methods is suggested solutions for cleaning Boiler Tubes/Coils, which improves Boiler efficiency by increasing heat transfer rate.

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