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A generic post-deblocking filter for block based image compression algorithms
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Orientador(es)
Resumo(s)
In this paper we propose a new post-processing deblocking technique that is independent of the compression method used to encode the image. The development of this filter was motivated by the use of Multidimensional Multiscale Parser (MMP) algorithm, a generic lossy and lossless compression method. Since it employs an adaptive block size, it presents some impairments when using the deblocking techniques presented in the literature. This led us to the development of a new and more generic deblocking method, based on total variation and adaptive bilateral filtering. The proposed method was evaluated not only for still images, but also for video sequences, encoded using pattern matching and transform based compression methods. For all cases, both the objective and subjective quality of the reconstructed images were improved, showing the versatility of the proposed technique.
Descrição
Palavras-chave
Deblocking filter Total variation Image coding Pattern matching
Contexto Educativo
Citação
Nelson C. Francisco, Nuno M.M. Rodrigues, Eduardo A.B. da Silva, Sérgio M.M. de Faria, A generic post-deblocking filter for block based image compression algorithms, Signal Processing: Image Communication, Volume 27, Issue 9, 2012, Pages 985-997, ISSN 0923-5965, https://doi.org/10.1016/j.image.2012.05.005.
Editora
Elsevier