The invention relates to automation and computer engineering and can be used in systems of digital signal processing for obtaining two-dimensional image of the signal wavelet. In particular, the device can be used for image analysis, detect features periodic dependencies and local inhomogeneities. The utility model is aimed to obtain the frequency-space representation of a two-dimensional signal with a continuous two-dimensional wavelet transformation. Said technical result is achieved by computing the two-dimensional wavelet filter with an arbitrary choice of scaling factors and angle of rotation. For this purpose, the device adds two unit calculating values of functions sin and cos, five multipliers, two adders and calculating unit the values of the wavelet filter, a wavelet filter calculation providing rotated by an arbitrary angle Θ. The resulting wavelet filter is stored in random access memory and is used to calculate the convolution of the signal analyzed in the apparatus for calculating two-dimensional convolution.
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