| 采用FFTW的Retinex及其在扫描地形图匀光中的应用 |
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| 引用本文： | 付仲良,童春芽,邵世维. 采用FFTW的Retinex及其在扫描地形图匀光中的应用[J]. 应用科学学报, 2010, 28(3): 297-300. DOI: 10.3696/jssn.0255-8297.2010.03.12 |
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| 作者姓名： | 付仲良 童春芽 邵世维 |
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| 作者单位： | 1. 武汉大学遥感信息工程学院，武汉4300792. 武汉大学测绘遥感信息工程国家重点实验室，武汉430079 |
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| 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.
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| 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 |
| 收稿时间： | 2010-02-01 |
| 修稿时间： | 2010-03-31 |
Uniform Color Processing of Scanned Topographic Maps Using FFTW-Based Retinex |
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| FU Zhong-liang,TONG Chun-ya,SHAO Shi-wei. Uniform Color Processing of Scanned Topographic Maps Using FFTW-Based Retinex[J]. Journal of Applied Sciences, 2010, 28(3): 297-300. DOI: 10.3696/jssn.0255-8297.2010.03.12 |
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| Authors: | FU Zhong-liang TONG Chun-ya SHAO Shi-wei |
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| Affiliation: | 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China |
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| Abstract: | 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. |
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| Keywords: | scanned topographic maps single-scale Retinex (SSR) color balance faster Fourier transform in the west (FFTW) |
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