摘要
分形编码是一种很有潜力的图像压缩算法,Jacquin在1989年提出了一种基于局部迭代函数系统(PIFS),可以真正自动实现图像压缩算法——分形块编码算法,在此基础上形成了基本的分形编码方案.衡量一种压缩算法好坏的标准之一是该算法是否容易硬件实现,基本算法由于计算复杂,计算量大,硬件实现需要较多的资源.比例因子是该算法中的一个重要变量,本文给出了一种求比例因子的方法,该方法简化了求比例因子的计算,从整体上减小了基本分形算法的计算量.由于比例因子计算的简化与计算量的减小,该算法将会有利于分形压缩的硬件实现.
Fractals is an important way of image compression. The basic automatic fractal algorithm was given by Jacquin in 1989. A good algorithm should be designed easier implementation by hardware. The basic fractal algorithm will need more hardware resource because of its complexity and enormous calculation. In this paper a new method was given to calculate the factor of scale as an important variable of the basic algorithm. The calculation load and complexity can be reduced by the new method. Compared with the basic algorithm, the method is easier for hardware implementation and needs less resource.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2008年第10期1152-1156,共5页
Journal of Tianjin University(Science and Technology)
基金
国家高技术研究发展计划(863)资助项目(2003AA84ts05)
关键词
图像压缩
分形
分形图像编码
比例因子
image compression
fractals
fractal image coding
the factor of scale
