Generalised quadtrees: a unified approach to multiresolution image analysis and codingR. Wilson, M. Todd, A. D. Calway, Generalised quadtrees: a unified approach to multiresolution image analysis and coding. SPIE Visual Commun and Image Processing, pp. 1–2. May 1990. PDF, 417 Kbytes.
This paper describes how a generalisation of the wavelet transform - the Multiresolution Fourier Transform ( MFT) - can be used in model-based coding, in which image features including boundary contours and textures can be extracted directly from the transform coefficients. As such, it has the potential to extend transform coding to very low bit rate, feature-based compression. Results of the work are presented to demonstrate the effectiveness of the methods.