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Costs and advantages of shape-adaptive wavelet transform for region-based image coding

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3 Author(s)
Cagnazzo, M. ; Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. Federico II di Napoli, Italy ; Poggi, G. ; Verdoliva, L.

Region-based encoding techniques have been long investigated for the compression of still images and video sequences and have recently gained much popularity, as testified by the object-based nature of the MPEG-4 video coding standard. This work aims at analyzing costs and advantages of implementing such an approach by shape-adaptive wavelet transform and shape-adaptive SPIHT. The analysis of several performance measures in a number of experiments confirm the potential of wavelet-based region-based approach, and provide insight about what performance gains and losses can be expected in various operative conditions.

Published in:

Image Processing, 2005. ICIP 2005. IEEE International Conference on  (Volume:3 )

Date of Conference:

11-14 Sept. 2005

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