Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Joao Carlos Silvestre"'
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
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