New adaptive filters as perceptual preprocessing for rate-quality performance optimization of video coding

Autor: Elose Vidal, Patrick Corlay, Nicolas Sturmel, Christine Guillemot, Franois-Xavier Coudoux

Publikováno v: Signal Processing: Image Communication
Signal Processing: Image Communication, 2017, 52, pp.124-137. ⟨10.1016/j.image.2016.12.003⟩
Signal Processing: Image Communication, Elsevier, 2017, 52, pp.124-137. ⟨10.1016/j.image.2016.12.003⟩

In this paper, we introduce two perceptual filters as pre-processing techniques to reduce the bitrate of compressed high-definition (HD) video sequences at constant visual quality. The goal of these perceptual filters is to remove spurious noise and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e17a0ce7a0f5560c79b888d06dd72325
https://hal.science/hal-01591984/file/image4124R2.pdf

Iterative phase reconstruction of wiener filtered signals

Autor: Laurent Daudet, Nicolas Sturmel

Publikováno v: ICASSP

This paper deals with phase estimation in the framework of underdetermined blind source separation, using an estimated spectrogram of the source and its associated Wiener filter. By thresholding the Wiener mask, two domains are defined on the spectro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ba6b1eef5686cd83ce64e5d2bb7ae66
https://doi.org/10.1109/icassp.2012.6287827

Glottal closure instant and voice source analysis using time−scale lines of maximum amplitude

Autor: Christophe d'Alessandro, Nicolas Sturmel

Publikováno v: Sadhana
Sadhana, Indian Academy of Sciences, 2011, 36 (5), pp.601-622
HAL

International audience; Time-scale representation of voiced speech is applied to voice quality analysis, by introducing the Line of Maximum Amplitude (LoMA) method. This representation takes advantage of the tree patterns observed for voiced speech p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::9c68457d26f9333b8e54c8fb2c14284a
https://hal.archives-ouvertes.fr/hal-01712495

Glottal closure instant detection using Lines of Maximum Amplitudes (LOMA) of thewavelet transform

Autor: Christophe d'Alessandro, Francois Rigaud, Nicolas Sturmel

Publikováno v: ICASSP

The Lines Of Maximum Amplitude (LOMA) of the wavelet transform are used for glottal closure instant detection. Following Kadambe & al. (1992), the wavelet transform modulus maxima can be used for singularity detection. The LOMA method extends this id

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10d37145ce2d0a28d19e8c413a28ce37
https://doi.org/10.1109/icassp.2009.4960634

A comparative evaluation of the zeros of z transform representation for voice source estimation

Autor: Nicolas Sturmel, Christophe d'Alessandro, Boris Doval

Publikováno v: INTERSPEECH
EUROSPEECH conference (INTERSPEECH 2007)
EUROSPEECH conference (INTERSPEECH 2007), 2007, Antwerp, Belgium. pp.558-561
HAL

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c60de5b0343d356bfda70c90b522265
https://doi.org/10.21437/interspeech.2007-249