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Abstract

A method, apparatus and computer program product for generating a texture map having a plurality of levels of detail for use in rendering an image which is displayed on a graphical display. A specified level of detail of the texture map is encoded as a sum of a plurality of scaled wavelet basis functions. A texture map corresponding to a more coarse level of detail of the texture map is generated from the wavelets comprising the lower frequency wavelets of the wavelet basis functions of the texture map corresponding to a finer level of detail. Preferably, the wavelet basis functions comprise Haar wavelet basis functions. Lower frequency wavelets from which the coarser level of detail texture map is reconstructed may comprise the lower half of the frequencies of the wavelet basis functions of the texture map corresponding to the immediately finer level of detail.

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First Claim