改进的分形图像编码

改进的分形图像编码 A IMPROVED CODING METHOD BASED ON FRACTAL 袁兰英 Yuan Lanying 1 first-author 李刚 Li Gang 1 黄继武 Huang Jiwu 1 武汉大学电子信息学学院 武汉大学电子信息学学院 College of Electronic Information,Wuhan University College of Electronic Information,Wuhan University 基于分形维数对图像进行块分割，提出了一种混合编码方法，引入不变矩限制匹配块的搜索范围．实验证明，在保持解码图像质量的同时提高了压缩比，并大大减少了编码时间． Proposed a hybrid coding method, a block segmentation based on fractal dimensions is used, and introduced a invariant image moment to confine searching ranges.Experiments show that the compression ratio is improved and coding time is rreduced markedly, while the quality of decoding image is maintained. 分形 分数维 不变矩 拼帖定理 fractal fractal dimension invariant momentt collage theorem TN919.8 1998-03-01 2021-04-01 3