Malika Mimi

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In this paper, we consider the problem of radar detection using the Gabor transform in presence of unknownpsilas noise and clutter. We proposed a new constant false alarm rate (CFAR) detector in time frequency domain to locate the positions of the targets exactly. This method is efficient in measurement as the case of no homogeneity is dealt with thus the(More)
PURPOSE Radiotherapy treatments to local tumors are always associated with dose deposit in surrounding tissues and even in distant tissues not traversed by the radiation beams. In the present work, we demonstrate by Monte Carlo simulations the impact of radiation energy on absorbed dose in a lung tumor and in other secondary organs in a digital mouse. We(More)
In this paper, we propose a new method based on texture analysis of anisotropy. Our proposed method based on a combination of fractal analysis with preprocessing using histogram equalization with discrete wavelets transforms (DWT). First, the texture image enhanced using the histogram equalization. Then, the enhanced image rotated with differences angles(More)
Small animal CT imaging and dosimetry usually rely on X-ray radiation produced by X-ray tubes. These X-rays typically cover a large energy range. In this study, we compared poly-energetic X-ray spectra against estimated equivalent (effective) mono-energetic beams with the same number of simulated photons for small animal CT imaging and dosimetry(More)
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