IEEE Trans Image Process - Resolution scalable image coding with reversible cellular automata.

Tópicos

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Resumo

In a resolution scalable image coding algorithm, a multiresolution representation of the data is often obtained using a linear filter bank. Reversible cellular automata have been recently proposed as simpler, nonlinear filter banks that produce a similar representation. The original image is decomposed into four subbands, such that one of them retains most of the features of the original image at a reduced scale. In this paper, we discuss the utilization of reversible cellular automata and arithmetic coding for scalable compression of binary and grayscale images. In the binary case, the proposed algorithm that uses simple local rules compares well with the JBIG compression standard, in particular for images where the foreground is made of a simple connected region. For complex images, more efficient local rules based upon the lifting principle have been designed. They provide compression performances very close to or even better than JBIG, depending upon the image characteristics. In the grayscale case, and in particular for smooth images such as depth maps, the proposed algorithm outperforms both the JBIG and the JPEG2000 standards under most coding conditions.

Resumo Limpo

resolut scalabl imag code algorithm multiresolut represent data often obtain use linear filter bank revers cellular automata recent propos simpler nonlinear filter bank produc similar represent origin imag decompos four subband one retain featur origin imag reduc scale paper discuss util revers cellular automata arithmet code scalabl compress binari grayscal imag binari case propos algorithm use simpl local rule compar well jbig compress standard particular imag foreground made simpl connect region complex imag effici local rule base upon lift principl design provid compress perform close even better jbig depend upon imag characterist grayscal case particular smooth imag depth map propos algorithm outperform jbig jpeg standard code condit

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