Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Siu-Kei Au Yeung"'
Publikováno v:
2022 IEEE International Symposium on Circuits and Systems (ISCAS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb5473a10fa2a9e1a19d43fd5e1bdedc
https://doi.org/10.1109/iscas48785.2022.9937480
https://doi.org/10.1109/iscas48785.2022.9937480
Publikováno v:
IEEE Transactions on Information Forensics and Security. 9:309-320
An alternative-transforms-based scheme has recently been proposed to achieve perceptual encryption of video signals in which multiple transforms are designed by using different rotation angles at the final stage of the discrete cosine transforms (DCT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d1263ee3b14a9985248be3be1b60e17
https://doi.org/10.1109/tifs.2013.2293955
https://doi.org/10.1109/tifs.2013.2293955
Publikováno v:
Signal Processing: Image Communication. 27:126-139
This paper studies how to reconstruct pictures with the best possible quality upon receiving more than one description at the decoder side of a multiple description coding (MDC) system, assuming that an MDC encoder has been fixed at the encoder side
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e179585819f035df11ffca1bc9ab10c6
https://doi.org/10.1016/j.image.2011.10.005
https://doi.org/10.1016/j.image.2011.10.005
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 21:1341-1345
In our earlier work , we proposed for the first time that the perceptual video encryption be performed at the transformation stage by selecting one out of multiple unitary transforms according to the encryption key. In this letter, we aim to design s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eb97cedea250a0af1edcac63c46437b
https://doi.org/10.1109/tcsvt.2011.2125630
https://doi.org/10.1109/tcsvt.2011.2125630
Publikováno v:
IEEE Signal Processing Letters. 17:961-964
It is well known that the discrete cosine transform (DCT) closely approximates the optimal Karhunen-Loeve transform (KLT) under the first-order stationary Markov condition with a strong inter-pixel correlation. However, if the inter-pixel correlation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b882b6192947168fcea4ab09abf99760
https://doi.org/10.1109/lsp.2010.2080266
https://doi.org/10.1109/lsp.2010.2080266
Publikováno v:
IEEE Signal Processing Letters. 16:861-864
Traditionally, any 2D transform (such as 2D DCT) is implemented through two separable 1D transforms along the vertical and horizontal dimensions. Such a framework is however not most suitable for a 2D directional source in which the dominant directio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9aa7b93851bc7d083df5099d0ebad562
https://doi.org/10.1109/lsp.2009.2026115
https://doi.org/10.1109/lsp.2009.2026115
Publikováno v:
IEEE Signal Processing Letters. 16:893-896
In this letter, we propose a novel video encryption technique that is used to achieve partial encryption where an annoying video can still be reconstructed even without the security key. In contrast to the existing methods where the encryption usuall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc4976d88f51c24bf54c0336f8af035b
https://doi.org/10.1109/lsp.2009.2026109
https://doi.org/10.1109/lsp.2009.2026109
Autor:
Jeff Siu-Kei Au-Yeung, Man-Hung Siu
Publikováno v:
Speech Communication. 50:769-781
Recently, the polynomial segment models (PSMs) have been shown to be a competitive alternative to the HMM in large vocabulary continuous recognition task [Li, C., Siu, M., Au-yeung, S., 2006. Recursive likelihood evaluation and fast search algorithm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70f9cdc2e5345e00624a57d9a15fa615
https://doi.org/10.1016/j.specom.2008.04.007
https://doi.org/10.1016/j.specom.2008.04.007
Autor:
Man-Hung Siu, Siu-Kei Au-Yeung
Publikováno v:
IEEE Signal Processing Letters. 13:644-647
Speaker adaptation has long been applied to improve speech recognition performance of hidden Markov model (HMM)-based systems. Recently, the polynomial segment model (PSM) has been shown as a viable alternative that can significantly improve the perf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::166df8f58d21a5d957ab50998587ec56
https://doi.org/10.1109/lsp.2006.875351
https://doi.org/10.1109/lsp.2006.875351
Publikováno v:
IEEE Transactions on Audio, Speech and Language Processing. 14:1704-1718
Polynomial segment models (PSMs), which are generalization of the hidden Markov models (HMMs), have opened an alternative research direction for speech recognition. However, they have been limited by their computational complexity. Traditionally, any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0532cbb98b6eaa20523f8bb7b8e2f348
https://doi.org/10.1109/tsa.2005.858553
https://doi.org/10.1109/tsa.2005.858553