Abstract: The paper is presented based on the deficiency of traditional interpolation. First, the theory of LS-SVR and linearity smoothness filtration are introduced, then LS-SVR filtration operator is constructed. To improve the arithmetic operation speed and simplify the arithmetic process complexity, it constructs the LS-SVR convolution mask based on the filtering strategy and LS-SVR characteristic, training process of LS-SVR is turned into simple weighted summation operation.

Key words: image magnification, least square support vector regression (LS-SVR) filter, filtration operator, convolution mask