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Stabilising illumination variations in motion detection for surveillance applications

Since illumination variations may cause the misinterpretation of data for various higher vision applications and algorithms, this study aims to reduce such influence. In order to obtain a motion mask, which is input for a higher vision application, wavelet coefficients are calculated by applying two-dimensional lifting wavelet transform with two mother wavelets. Energy is calculated from the obtained wavelet coefficients. Morphological operations are used to improve output image. The developed algorithm is a robust algorithm further reducing false alarm readings caused by illumination variations (better false detection rate and percentage of correct classifications).