摘要
针对扫描地形图存在折痕和光照不均的现象,研究了Retinex理论在扫描地形图中的应用,提出一种基于西方快速傅里叶变换(faster Fourier transform in the west,FFTW)的单尺度Retinex匀光方法,并给出了匀光处理流程.实验表明该方法可克服数学模型法的不足,适用性较强,在消除扫描地形图的折痕和光照不均方面能取得满意的效果,可有效解决单张扫描地形图的色彩平衡问题.
This paper analyzes the appearance of creases and light non-uniformity in scanned topographic maps,and applies the Retinex theory to process the maps.A processing method and a single-scale Retinex algorithm(SSR) are proposed based on the faster Fourier transform in the west(FFTW) and the Retinex theory.Experimental results show that the proposed method can overcome disadvantages of the mathematical model and effectively remove creases and light non-uniformity in scanned topographic maps.
出处
《应用科学学报》
EI
CAS
CSCD
北大核心
2010年第3期297-300,共4页
Journal of Applied Sciences
关键词
扫描地形图
单尺度Retinex
色彩平衡
西方快速傅里叶变换
scanned topographic maps
single-scale Retinex(SSR)
color balance
faster Fourier transform in the west(FFTW)