Fractals everywhere
Fractal image compression: theory and application
Fractal image compression: theory and application
Accelerating fractal image compression by multi-dimensional nearest neighbor search
DCC '95 Proceedings of the Conference on Data Compression
On the performance of fractal compression with clustering
IEEE Transactions on Image Processing
A review of the fractal image coding literature
IEEE Transactions on Image Processing
Speed-up in fractal image coding: comparison of methods
IEEE Transactions on Image Processing
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This paper proposes the notion of a greylevel difference classification algorithm in fractal image compression. Then an example of the greylevel difference classification algorithm is given as an improvement of the quadrant greylevel and variance classification in the quadtree-based encoding algorithm. The algorithm incorporates the frequency feature in spatial analysis using the notion of average quadrant greylevel difference, leading to an enhancement in terms of encoding time, PSNR value and compression ratio.