A low-power quadtree fractal image decoder

For many multimedia applications including VOD and image database, Fractal image compression algorithm has excellent characteristics in terms of high compression ratio and fast decompression speed but has been widely studied only in regard to software. However, in this paper, we present a low power quadtree fractal image decoder which can decode 256×256, 8 bits gray-scale images in real-time. Two power-down techniques have been adopted in the implementation, a power-down multiplier used in data-path, and a simple post-processing method optimized in terms of hardware utilization and energy dissipation. The decoder designed by using 1 poly, 3 metal, 0.6µm CMOS technology consumes 18.5 mW at 3.3V with 100 MHz clock.