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In this paper, we reported the wavelet analysis of lightning electric field of Narrow Bipolar Pulses (NBP) measured during two different monsoon season in Johor, Malaysia. The lightning electric field of NBP were divided into Narrow positive Bipolar Pulses (NPBP) and Narrow Negative Bipolar Pulses (NNBP). Analysis on the wavelet and frequency spectrum reveals that the energy spectrum for both NBPs...
Lightning generates electric fields are known to have negative consequences. In this study, two types of lightning electric fields which are Negative Return Stroke (NRS) and Narrow Bipolar Pulses were thoroughly analyzed using wavelet analysis. Hence, analysis on the wavelet and frequency spectrum reveal that the energy spectrum for NBP concentrates at high frequency (200 kHz to 500 kHz) with average...
Prosthesis hand is an artificial device which replaces missing hand because of human's hand may lost by trauma, disease or defect. From last decade, some researchers have been studying to invent and develop artificial hand. One of the most important step of bionic upper limb is developing surface electromyography (sEMG) signal analyzing methods. This pilot study is aimed to examine de-noising efficiency...
This paper presents two novel architectures for two-dimensional (2-D) Haar wavelet transform (HWT) of transform block in face recognition systems. The proposed architectures comprises 2-D HWT with transpose-based computation and dynamic partial reconfiguration (DPR) that have been synthesised using VHDL and implemented on Xilinx Virtex-5 FPGAs. To evaluate the proposed architecture, comparison for...
In this research, novel architectures based on different design approaches and arithmetic techniques such as direct mapping implementation, dynamic partial reconfiguration (DPR) mechanism, distributed arithmetic (DA) and systolic array (SA) will be developed for three dimensional (3D) medical image compression system. Moreover, solutions for processing large medical volumes will be investigated and...
This paper describes the design and implementation of 3D Haar wavelet transform (HWT) with transpose based computation and dynamic partial reconfiguration (DPR). As a result of the separability property of the multi-dimensional HWT, the proposed architecture has been implemented using a cascade of three N-point 1D HWT and two transpose memory for a 3D volume of N ?? N ?? N, suitable for 3D medical...
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