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Improving the performance of the quadtree-based image approximation via the generalised DCT

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3 Author(s)
Wu, H.-S. ; Imperial Coll. of Sci. Technol. & Med., London, UK ; King, R.A. ; Kitney, R.I.

An algorithm is presented to improve the performance of the quadtree-based image approximation using the generalised discrete cosine transform. The results show that the number of coefficients for the approximation can be further reduced remarkably while the approximation error increases only slightly.

Published in:

Electronics Letters  (Volume:29 ,  Issue: 10 )

Date of Publication:

13 May 1993

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