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This paper describes approach based on the particle swarm optimization with improved inertia weight approach (PSOIIW) to improve nulling performance of time modulated linear antenna arrays by Radio Frequency (RF) switch. The nulls position of a time modulated linear array can be reduced significantly by rearranging the static excitation amplitudes as well as the wtich-on intervals of each element...
The evolution of level set segmentation needs an appropriate initialization and controlling parameters, which requires manual intervention. A new spatial fuzzy level set algorithm is proposed in this paper to facilitate the automatic mammogram image segmentation. The initial segmentation of the mass is obtained by spatial fuzzy clustering that incorporates the spatial information and local intensity...
Iris Recognition (IR) across illumination variations is a problem of fundamental importance in computer vision. In this paper, we propose two novel techniques, viz., Triangular DCT based Feature Extraction (T-DCT) and Radon Transform based Pre-processing, to improve the performance of an IR system. T-DCT is used for efficient feature extraction and Radon Transform is used for curve detection in iris...
One of the major challenges encountered by current Face Recognition (FR) techniques lies in the difficulties of handling varying poses and illuminations. In this paper we propose three novel techniques, viz., Fast Walsh Hadamard Transform (FWHT), Chiral Image Superimposition (CIS) and Discrete Wavelet Transform (DWT), to improve the performance of a FR system. FWHT is used for illumination normalization,...
The measurement of the Intima Media Thickness (IMT) have a clinical relevance in accord ance with cardiovascular disease. Fully automatic algorithm is developed for the test of arterial wall thickening and for automatic measurement, tracking and segmentation of the Intima Media Complex (IMC) in B-mode ultrasound video sequences. The Adaptive Normalized Correlation (ANC) algorithm has two stage of...
This paper analyzes the characteristics of photovoltaic (PV) cells under various weather conditions. Mostly, the PV cells are non-linear in nature, whose characteristics and the maximum power point varies with irradiance and temperature. Here the solar cells are cascaded to form a photovoltaic array or otherwise solar panel according to the power requirement. It has a unique operating point at which...
A finished product should be quality assured to meet the needs, expectations and requirements it is intended for. As quality through human inspection may lead to errors and may not be adequate for instant and mass production, current high speed production lines require automated inspection with precise critical objective measurements and high reliability. Image processing has become a key tool in...
Squamous cell carcinoma (SCC) of the lungs is one of the types of non-small cell lung malignancy. Non-small cell lung cancers accounts for about 80% of lung cancers, and of these, roughly 30% are SCC's, which are mostly seen in smokers. SCC is seen in the tissue that lines the air passages in the lungs. The work is based on the Segmentation and Detection of Squamous cell carcinoma of lung from sputum...
All industrial applications are directly or indirectly dependent on induction motor. There would be a high amount of losses in the induction motor due to poor quality of voltage and current that is generated by the normal inverter. As number of levels of the output voltage increase, voltage quality increases. In the paper, multilevel inverter of seven levels which is connected in series sub-multilevel...
A Cognitive Radio is a Software Defined Radio (SDR). The Cognitive radio network is capable to sense and analyze its surrounding environment as well as reconfigure its operation in accordance with this radio environment. In this way, based on the available Channel State Information (CSI), the cognitive radio network may dynamically access the spectrum. MIMO based cognitive radio system enabled dynamically...
A Dual-Element Tri-Band (DETB) by cleft and bifurcation based Multiple Input Multiple Output (MIMO) antenna is designed for Long Term Evolution Advanced (LTE-A) and Global positioning system (GPS) wireless applications. As part of DGS, a T-shaped structure is used in the ground plane with dual H-shaped slot is etched from it to improve the isolation between the antennas. The overall size of the MIMO...
Cloud computing is an information technology where user can remotely store their outsourced data so as enjoy on demand high quality application and services from configurable resources. Using information data exchange, users can be worried from the load of local data storage and protection. Thus, allowing freely available auditability for cloud data storage is more importance so that user gives change...
Typically, decentralized off-grid solar street lighting solutions are designed to the needs during low or no-isolation period. These systems satisfy the lighting load requirements even if the weather conditions are worse but for most part of the year there will be an excessive amount of energy without being utilized. But still these unutilized energy from each pole may not fulfil the local energy...
Nodes communicate through wireless links in the absence of fixed infrastructure in Mobile ad-hoc network (MANET). The two basic routing on the basis of security purpose are cryptographic and trust based mechanism which have been used for performing fundamental functions like message sending, data transmission etc in MANET. Though several trust based protocols have been developed, but most of them...
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