Efficient multiplier-less parametric integer approximate transform based on 16-points DCT for image compression

Autor: Larbi Boubchir, Toufik Bouden, Tahar Brahimi, Nabila Brahimi

Publikováno v: Multimedia Tools and Applications. 81:37723-37746

The Discrete Cosine Transform (DCT) is one of the major components in most image and video compression systems. In this paper, a novel approach for developing integer approximation of the two-dimension 8 points conventional DCT-II is introduced. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96a8b67bad0d66683ab23a38f30930f4
https://doi.org/10.1007/s11042-021-11348-3

A Nonstationary Mathematical Model for Acceleration Time Series

Autor: Tahar Smain, Tahar Brahimi

Publikováno v: Mathematical Modelling of Engineering Problems. 8:246-252

The choice of nonstationary stochastic models for the study is fully justified by the limitation of acceleration time series number. The three acceleration time series under consideration are used to generate a new, artificial series of ten per histo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68409be29aa65da4523717429b592813
https://doi.org/10.18280/mmep.080211

An efficient JPEG-2000 based multimodal compression scheme

Autor: Abdellah Kacha, Tahar Brahimi, Fouad Khelifi

Publikováno v: Multimedia Tools and Applications. 80:21241-21260

In this paper, a wavelet-based multimodal compression method is proposed. The method jointly compresses a medical image and an ECG signal within a single codec, i.e., JPEG-2000 in an effective and simple way. The multimodal scheme operates in two mai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e35ab72dc0e6ef137099fe1c07e985d
https://doi.org/10.1007/s11042-021-10776-5

A novel and efficient 8-point DCT approximation for image compression

Autor: Larbi Boubchir, Toufik Bouden, Nabila Brahimi, Tahar Brahimi

Publikováno v: Multimedia Tools and Applications. 79:7615-7631

The Discrete Cosine Transform is widely used in the field of still image compression. Many integer approximations are given in the literature whereas the most of these transforms requires bit shift operations. This paper presents an efficient and low

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55db84cde52e6b10d7b6f979d7dbd4e8
https://doi.org/10.1007/s11042-019-08325-2

An improved wavelet-based image coder for embedded greyscale and colour image compression

Autor: Arab Ali-Cherif, Tahar Brahimi, Farid Laouir, Larbi Boubchir

Publikováno v: AEU-International Journal of Electronics and Communications, Elsevier
AEU-International Journal of Electronics and Communications, Elsevier, 2017, 73, pp.183-192

The embedded zero-tree wavelet (EZW) coding algorithm is a very effective technique for low bitrate still image compression. In this paper, an improved EZW algorithm is proposed to achieve a high compression performance in terms of PSNR and bitrate f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f90446775f8c1b1982a2d635d85ac52
https://doi.org/10.1016/j.aeue.2017.01.008