versão On-line ISSN 0718-0764
MARTINEZ, Alejandro; DIAZ, Alejandro; LINARES, Mónico e VEGA, Javier. Simple and Modular Architecture for Fractal Image Compression using Quad-Tree Multi-Resolution. Inf. tecnol. [online]. 2006, vol.17, n.1, pp. 77-84. ISSN 0718-0764. http://dx.doi.org/10.4067/S0718-07642006000100010.
This work presents a simple and rapid architecture for fractal image compression based on a multi-resolution fractal image compression method, using pyramidal quad-tree partition and a block classification scheme based on image size and contrast. The use of expanded range blocks, non-contracted domain blocks, and chessboard-type block decimation compensated for loss of image quality and allowed obtaining the fractal parameters at low image resolution without recalculating them. The proposed architecture takes advantage of the simplicity of the method to obtain a modular structure. Because all the range blocks are equal-sized through multi-resolution image pyramid structure, a single type of fractal-coding module can carry out the all the quad-tree fractal encoding.
Palavras-chave : fractals; image compression; multi-resolution coding; modular architecture.