Signal-adapted multiresolution transform for image-coding
IEEE Transactions on information theory, Volume 38, N°2, Part 2, March 1992
Wavelet-type multiresolution transforms have recently been introduced in digital image coding, and have been shown to offer some advantages over classical block transform techniques such as the discrete cosine transform (DCT). This correspondence is mainly concerned with the problem of designing suitable multiresolution transforms that are adapted to the given image signal, in the sense that they maximize the coding gain at each resolution level. A simple alternating optimization algorithm is derived for solving this problem in the framework of the lattice realization of para-unitary quadrature mirror filters (QMF). The resulting image coding scheme is discussed in some detail, and its performance is compared with the DCT (JPEG) technique and with some non-adapted multiresolution transforms.
| Mots Clés: | orthonormal bases;wavelet;design;banks |
| Type: | Journal |
| Langue: | English |
| Date: | Mars 1992 |
| Département: | Communications Mobiles |
| Eurecom ref: | 1048 |
| Copyright: | © 1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Bibtex: | @article{EURECOM+1048, doi = {http://dx.doi.org/10.1109/18.119749}, year = {1992}, month = {03}, title = {{S}ignal-adapted multiresolution transform for image-coding}, author = {{D}esarte, {P}hilippe and {M}acq, {B}enoit and {S}lock, {D}irk {T} {M}}, journal = {{IEEE} {T}ransactions on information theory, {V}olume 38, {N}°2, {P}art 2, {M}arch 1992}, url = {http://www.eurecom.fr/publication/1048} } |
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