首页   按字顺浏览 期刊浏览 卷期浏览 Neural classification of SPOT imagery through integration of intensity and fractal info...
Neural classification of SPOT imagery through integration of intensity and fractal information

 

作者: K. S. Chen,   S. K. Yen,   D. W. Tsay,  

 

期刊: International Journal of Remote Sensing  (Taylor Available online 1997)
卷期: Volume 18, issue 4  

页码: 763-783

 

ISSN:0143-1161

 

年代: 1997

 

DOI:10.1080/014311697218746

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

It is well known that higher dimensional information essentially leads to better accuracy in remotely sensed image classification. This paper is aimed at land cover classification from SPOT-HRV imagery by the integration of multispectral intensity and texture information. In particular, fractal dimensions are extracted using a wavelet transform as image texture. A neural network approach to classification is adopted in this paper. The underlying network is a modified multilayer perceptron trained by a Kalman filtering technique. The main advantages of this network are (1) its non-backpropagation fashion of learning which leads to a fast convergence, (2) a built-in optimization function, and (3) global scale. Saving computer storage space and a fast learning capability are in particular suitable features for remote sensing applications. Correlation analysis was subsequently performed on both the intensity and fractal images. It was found that fractal information significantly improves the discrimination capability of heterogeneous area such as in urban regions, while it slightly degrades accuracy for homogeneous areas, such as open water. The overall classification performance is superior to results obtained using reflectance only. Improvements over heterogeneous areas are demonstrated.

 

点击下载:  PDF (1114KB)



返 回