Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.11/100
Título: Evaluation of transform based image coders, using different transforms and techniques in the transform domain
Autor: Salvado, José
Roque, Bruno
Palavras-chave: Image coding
Image quality
Visual thresholds
Discrete cosine transform
Discrete wavelet transform
S transform
Data: Jan-2004
Editora: The World Scientific and Engineering Academy and Society
Citação: Salvado,José; Roque,Bruno - Evaluation of transform based image coders, using different transforms and techniques in the transform domain. WSEAS Transactions on Computers.[S.l]: The World Scientific and Engineering Academy and Society. ISSN: 1109-2750. Vol. 3, nº 1, (January 2004), p. 241 – 249
Resumo: This paper addresses the most relevant aspects of lossy image coding techniques, and presents an evaluation study on this subject, using several transforms and different methods in the transform domain. We developed different transform based image coders/decoders (codecs) using different transforms, such as the discrete cosine transform, the discrete wavelet transform and the S transform. Besides JPEG Baseline, we also use other techniques and methods in the transform domain such as a DWT based JPEG-like (JPEG DWT), a JPEG DWT with visual threshold (JPEG-VT), a JPEG–like coder based on the ST, and an EZW coder. The codecs were programmed in MATLAB™, using custom and built-in functions. The structures of the codecs are presented, also as some experimental results which allow us evaluate them, and support this study.
URI: http://hdl.handle.net/10400.11/100
ISSN: 1109-2750
Aparece nas colecções:ESTCB - Artigos em revistas com arbitragem científica

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