分形图象压缩的主池预缩小方法  

A Domain Pools Pre-reduction for Fractal Image Compression

作　　者：范策[1] 

机构地区：[1]烟台大学计算机学院,烟台264365

出　　处：《计算机工程》2001年第11期138-140,共3页Computer Engineering

摘　　要：在分形图象压缩中，图象被分割成序列块，其中每一个与其相似的子图象－主块要从子图象池中进行选择。不过，这个较大的池中实际上只有一部分被利用在图象编码中。通过利用较强亮度变化的主块来缩减主池，从而导致了分形图象在两方面的改善：加快了编码时间；同时也提高了压缩率。In fractal image compression an image is partitioned into ranges for each of which a similar subimage, called domain, is selected from a pool of sub image. However, only a fractions of this large pool is actually used in the fractal code. We reduce domain pools using domain with relatively large intensity variation, thus resulting in improvement in two related ways: speeduping coding time and raising compression rate.

关 键 词：分形 图象压缩 主池预缩法 图象编码 

分 类 号：TN919.81[电子电信—通信与信息系统] TP391.41[电子电信—信息与通信工程]