| 小波变换实现不同尺度土地利用图像融合 |
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| 引用本文： | 曹凯滨,张新长.小波变换实现不同尺度土地利用图像融合[J].地理空间信息,2007,5(2):50-53. |
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| 作者姓名： | 曹凯滨 张新长 |
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| 作者单位： | 1. 增城市规划局,城市建设测量队,广东,增城,511300
2. 中山大学,遥感与地理信息工程系,广东,广州,510275 |
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| 摘 要： | 图像融合的目的是把同一目标的多幅图像融合成一幅质量高的图像。本文给出了一种基于小波变换的图像融合方法,首先对大比例尺土地利用图像使用正交小波进行分解,再使用小比例尺土地利用图像替换分解出的低频近似信息,然后重构,得到两幅土地利用图像的融合图像。最后使用该方法对两幅土地利用图像进行了融合,得到的融合后的土地利用图像汲取了两幅图像的优势,在一定程度上实现了土地利用空间类型的信息量随比例尺变化而自动增减。
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| 关 键 词： | 小波变换 低通滤波 高通滤波 土地利用 图像融合 |
| 文章编号： | 1672-4623（2007）02-0050-03 |
| 修稿时间： | 2007-03-07 |
Multi-Scales Land-use Images Fusion Method Based on Wavelet Transform |
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| CAO Kaibin,ZHANG Xinchang.Multi-Scales Land-use Images Fusion Method Based on Wavelet Transform[J].Geospatial Information,2007,5(2):50-53. |
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| Authors: | CAO Kaibin ZHANG Xinchang |
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| Institution: | 1. Town Building Measurement Team, Zengcheng Urban Planning Bureau, Zengcheng, Guangdong 511300, China; 2.Department of Remote Sensing and Geographic Information Engineering, Sun Yat-Sen University, Guangzhou 510275,China |
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| Abstract: | The goal of image fusion is to combine a high quality image from multi-image about the same object. The paper presents an image fusion scheme based on wavelet transform. Firstly, the large-scale land-use image is decomposed by orthogonal wavelet; secondly, replace the low- frequency approximate information which was just decomposed with small-scale land-use image, finally the fused image is obtained by taking inverse wavelet transform. The fused land-use image obtains the merits of the images which have different scales. It realize that the information of special objects increase or decrease with the differences of the scale. |
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| Keywords: | wavelet transform low pass filter high pass filter land-use image fusion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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