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A hybrid DCT-SVD image-coding algorithm

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2 Author(s)
Dapena, A. ; Departamento de Electronica y Sistemas, Univ. de La Coruna, Spain ; Ahalt, S.

We propose an image-coding algorithm which combines the discrete cosine transform (DCT) and the singular value decomposition (SVD). The DCT is used to transform those blocks in the source image that exhibit a high correlation, while blocks with greater high-frequency content are transformed using the SVD. A simple criterion is used to decide which transform should be used on each block. Simulation results show that the new hybrid algorithm provides good distortion, bit rate, and image quality-especially in images which are less spatially correlated

Published in:

Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:12 ,  Issue: 2 )

Date of Publication:

Feb 2002

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