Wavelet analysis is a powerful signal processing method that represents a signal in terms of wavelets. A wavelet or small wave is a wavelike function, upon scaled and translated, that can be used to decompose a signal into its basic constituent components at different scales. Each scale component can be converted into a frequency range. The resulting wavelet transform measures the time-frequenc...

continuous and lengthy droughts in previous years not only in the southern provinces of iran but also in the whole country necessitate optimized water management. indian ocean and adjacent seas in south of iran are suppliers of part of the humidity in the region and the variation on indian ocean sea surface temperature has an important role in evaporation from oceans and input humidity into atm...

Optical character recognition system research has been acquired howling success, but the reconstruction of layout needs fonts of the characters. In this paper, a novel font recognition algorithm is proposed, which is based on multi-scale wavelet analysis. We adopt wavelet analysis and the grid method to deal with the character image, and extract wavelet energy density feature, and apply the BP ...