用于Landsat ETM+和ERS-2 SAR圖像融合對(duì)城區(qū)地物特征分類的BP-ANN/GA混合算法
A Hybrid BP-ANN/GA Algorithm for Classification of Urban Terrain Surfaces Using Fused Images of Landsat ETM+ and ERS-2 SAR
-
摘要: 該文建立了反向傳播人工神經(jīng)網(wǎng)絡(luò) (Back Propagation Artificial Neural Network, BP-ANN)和遺傳算法 (Genetic Algorithm, GA)的BP-ANN/GA混合算法。利用GA算法的全局優(yōu)化能力優(yōu)化BP-ANN的初始權(quán)值，克服了傳統(tǒng)BP-ANN收斂速度慢，容易陷入局部最小的缺點(diǎn)。BP-ANN/GA混合算法對(duì)Landsat ETM+4, 5, 7三波段紅外圖像和ERS-2 SAR雷達(dá)圖像的融合數(shù)據(jù)進(jìn)行了城市多類地物特征分類。結(jié)果表明：BP-ANN/GA算法不僅提高多源遙感圖像自動(dòng)分類的速度，而且提高了各類特征分類的精度。該文對(duì)上海浦東地區(qū)的Landsat ETM＋和ERS-2 SAR數(shù)據(jù)作了融合分類試驗(yàn)與驗(yàn)證。
-
關(guān)鍵詞:
- 圖像融合;BP-ANN/GA;地表分類
Abstract: A hybrid algorithm of the BP-ANN/GA (Back Propagation Artificial Neural Network and Genetic Algorithm) is developed to optimize the initial weights and make fast convergence of the BP-ANN. This algorithm is applied to classification of urban terrain surfaces with fused data of Landsat ETM+ and ERS-2 SAR. An example of the Shanghai Pudong area using both the Landsat ETM+ and ERS-2 SAR image data well demonstrates the classification speed and accuracy of the algorithm. -
邊肇祺. 模式識(shí)別 (第二版)[M]. 北京：清華大學(xué)出版社，2000.01: 46.159.[2]Yoshida T, Omatu S. Neural network approach to land cover mapping [J]. IEEE Trans. on Geosci. Remote Sens. 1994, 32(5):11031109. .合肥：中國(guó)科學(xué)技術(shù)大學(xué)出版社, 2003.05: 5587. .[3]Hansen J V, McDonald J B. Some experimental evidence on the performance of GA-designed neural networks [J].Journal of Experimental Theoretical Artificial Intelligence.2001, 13(3):-[4]周明, 孫樹棟. 遺傳算法原理及應(yīng)用(第一版) [M]. 北京：國(guó).64. 防工業(yè)出版社, 1999.06: 1[5]Jin Y Q, Wang Y. A genetic algorithm to retrieve multi- parameters of land surface roughness and soil moisture [J]. International Journal of Remote Sensing, 2001, 22(16): 3093307321. .[6]李祚泳. 用B-P神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)多波段遙感圖像的監(jiān)督分類[J]. 紅外與毫米波學(xué)報(bào), 1998, 17(2): 153156. 3099...[7]Lopbs A, Nezry E, Touzi R, Laur H. Structure detection and statistical adaptive speckle filtering in SAR images [J]. International Journal of Remote Sensing, 1993, 14(9): 17351758.[8]Gonzalez R C, Woods R E. Digital image processing (second edition) [M], New York: Prentice-Hall, 2003: 675.683. -
計(jì)量
- 文章訪問數(shù): 2573
- HTML全文瀏覽量: 120
- PDF下載量: 986
- 被引次數(shù): 0
下載:
