Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Luis A. S. V. de Sa"'
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783319097602
PROPOR
PROPOR
This paper presents a study on keyword spotting systems based on acoustic similarity between a filler model and keyword model. The ratio between the keyword model likelihood and the generic (filler) model likelihood is used by the classifier to detec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::737db89e73271638c6a6351f8a59b373
https://doi.org/10.1007/978-3-319-09761-9_5
https://doi.org/10.1007/978-3-319-09761-9_5
Publikováno v:
2009 35th Annual Conference of IEEE Industrial Electronics.
Constant frequency One Cycle Control (OCC), as proposed by Smedley, is a powerful method for controlling switching power converters. The dimensioning of this control method for two level AC output converters is not of common knowledge. This paper des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ac9a8dbf3130258894bb574a1a9da46
https://doi.org/10.1109/iecon.2009.5414953
https://doi.org/10.1109/iecon.2009.5414953
Autor:
Luis A. S. V. de Sa, José Lopes, Arlindo Veiga, Carla Teixeira Lopes, Cláudio Neves, Alexandre Magno Andrade Maciel, Fernando Perdigão
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540859796
PROPOR
PROPOR
This paper describes the development of a robust speech recognition using a database collected in the scope of the Tecnovoz project. The speech recognition system is speaker independent, robust to noise and operates in a small footprint embedded hard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e16a86fd71d96aa5d75e617c473bf09f
https://doi.org/10.1007/978-3-540-85980-2_34
https://doi.org/10.1007/978-3-540-85980-2_34
Publikováno v:
Visual Communications and Image Processing '97.
One efficient way to compress digital images is subband coding. Subband coding using vector quantization could be a competitor to DCT-like image compression schemes. In this paper we will describe an image sequence compression algorithm based on diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::271ef2a55b0f6c4292c8d6604d7fe8a1
https://doi.org/10.1117/12.263215
https://doi.org/10.1117/12.263215
Publikováno v:
SPIE Proceedings.
The wavelet transform is defined for infinite-length signals. In practice we only have finite-length signals, so signals must be extended before they can be transformed. The question is how to extend the signal to minimize signal end effects, or how
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28e16b516dfe4ed54f4500e2e13d8e91
https://doi.org/10.1117/12.251274
https://doi.org/10.1117/12.251274
Publikováno v:
Advanced Image and Video Communications and Storage Technologies.
Since the approval of the H.261 standard many compatible video codecs have been announced. These hardware systems are not versatile since they are generally based on proprietary chip sets specifically designed for that application. In this paper we d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f08cf7d9d812250e5b28659f796a9c3b
https://doi.org/10.1117/12.201212
https://doi.org/10.1117/12.201212
Autor:
Vitor Silva, Luis A. S. V. de Sa
Publikováno v:
Advanced Image and Video Communications and Storage Technologies.
An efficient video coding algorithm is described. It is based on a new quadtree block merging algorithm and wavelet decomposition of video signals using orthonormal and biorthogonal filter banks. The merging algorithm represents the motion compensate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a14032492df7604c0ed877c62afd617
https://doi.org/10.1117/12.201194
https://doi.org/10.1117/12.201194
Publikováno v:
SPIE Proceedings.
Almost any frame grabber system has a special controller circuit to transfer data from the video analog to digital converter (ADC) to the system memory. This controller which normally includes a locked phase loop (PLL) and several counters has to ful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69a1b977dfd4e9599616e0a41916eb7d
https://doi.org/10.1117/12.135918
https://doi.org/10.1117/12.135918
Autor:
Vitor Silva, Luis A. S. V. de Sa, Joao Carlos Silvestre, Sergio M. M. de Faria, Luis J. de la Cruz, Fernando Lopes, Pedro J. Amado, Antonio Navarro
Publikováno v:
SPIE Proceedings.
An important application of digital image processing is the compression of video sequences by one or two orders of magnitude with minor picture quality degradation. In order to achieve this data compression elaborated algorithms are used. They elimin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c1acdb11626ff6939173db640dd9f58
https://doi.org/10.1117/12.58419
https://doi.org/10.1117/12.58419