【摘要】 利用虹膜图像固有的对称特性,提出了基于对称性的快速分形虹膜图像特征区域的压缩算法;通过虹膜图像特征区域边缘的定位,确定对称轴,然后对于一值域图像块,与其匹配的定义域块被限定在其对称区域中,从而可减少定义域块的搜索范围,加快分形编码速度,最终达到加速虹膜图像压缩目的。更多还原

【Abstract】 A fast compression algorithm of Iris image interest region based on symmetry and fractal coding is proposed by using its inherent symmetry feature.The matched domain image blocks are restricted in the symmetrical region for a range block,which can decrease the searching region of the blocks,then speed up the fractal encoding,at last,accelerate the Iris image compression.更多还原