一级黄色片免费播放|中国黄色视频播放片|日本三级a|可以直接考播黄片影视免费一级毛片

高級搜索

留言板

尊敬的讀者、作者、審稿人, 關于本刊的投稿、審稿、編輯和出版的任何問題, 您可以本頁添加留言。我們將盡快給您答復。謝謝您的支持!

姓名
郵箱
手機號碼
標題
留言內容
驗證碼

基于小波變換和馬爾可夫隨機場的極化SAR圖像自動分類

劉國慶,  熊紅,  黃順吉

劉國慶, 熊紅, 黃順吉. 基于小波變換和馬爾可夫隨機場的極化SAR圖像自動分類[J]. 電子與信息學報, 2000, 22(3): 359-365.
引用本文: 劉國慶, 熊紅, 黃順吉. 基于小波變換和馬爾可夫隨機場的極化SAR圖像自動分類[J]. 電子與信息學報, 2000, 22(3): 359-365.
Liu Guoqing, Xiong Hong, Huang Shunji. AUTOMATIC MULTIRESOLUTION CLASSIFICATION OF POLARIMETRIC SAR IMAGE WITH WAVELET TRANSFORM AND MARKOV RANDOM FIELD[J]. Journal of Electronics & Information Technology, 2000, 22(3): 359-365.
Citation: Liu Guoqing, Xiong Hong, Huang Shunji. AUTOMATIC MULTIRESOLUTION CLASSIFICATION OF POLARIMETRIC SAR IMAGE WITH WAVELET TRANSFORM AND MARKOV RANDOM FIELD[J]. Journal of Electronics & Information Technology, 2000, 22(3): 359-365.

基于小波變換和馬爾可夫隨機場的極化SAR圖像自動分類

AUTOMATIC MULTIRESOLUTION CLASSIFICATION OF POLARIMETRIC SAR IMAGE WITH WAVELET TRANSFORM AND MARKOV RANDOM FIELD

  • 摘要: 本文提出一種對極化合成孔徑雷達(SAR)圖像進行自動多分辨率分類的方法。首先利用多視極化白化濾波(MPWF)抑制極化SAR圖像的相干斑,得到反映地物輻射特征的紋理SAR圖像,然后利用小波變換(WT)提取不同分辨率的紋理信息,在最低分辨率級利用Akaik信息準則(AIC)自動估計圖像中的紋理類數(shù),進而在各個分辨率級利用馬爾可夫隨機場(MRF)模型表征各像素間的空間關聯(lián)信息,并分別利用最大似然(ML)方法和循環(huán)條件模式(ICM)進行自動的模型參數(shù)估計和最大后驗概率(MAP)分類,最后應用NASA/JPL機載L波段極化SAR數(shù)據(jù)驗證了本文所提分類方法的有效性和優(yōu)越性。
    Abstract: In this paper an automatic multiresolution classification method is proposed to classify polarimetric synthetic aperture radar (SAR) image.At first a textured SAR image characterizing the terrain reflection is obtained by using a multi-look polarimetric whitening filter (MPWF) to reduce the speckle in the polarimetric SAR image. Then the wavelet transform (WT) is utilized to extract texture information in different resolutions, and in the lowest resolution level the Akaik information criterion (AIC) is used for estimating the optimal number of texture classes in the image. Next the Markov random field (MRF) model is employed to characterize the spatial constraints between pixels in each resolution level, and a maximum like- lihood (ML) approach and an iterated conditional mode (ICM) approach are used for the model parameters estimation and maximum a posteriori (MAP) classification, respectively. Finally the paper presents the experimental results with the NASA/JPL L-band airborne polarimetric SAR data and verifies the effectiveness and advantage of the classification method proposed.
    • HTML全文
  • Novak L M, Burl M C. Optimal speckle reduction in polarimetric SAR imagery[J].IEEE Trans. on Aerospace Electrical Systems.1990, 26(2):293-305[2]Guoqing Liu, Shunji Huang, Torre A, Rubertone F. The multi-look polarimetric whitening filter for speckle reduction in polarimetric SAR image .IEEE Trans. on Geoscience and Remote Sensing, 1998,363, 36(3) :1016-1020.[3]Mallat S G. A theory for multiresolution signal decomposition: the wavelet representation .IEEE Trans. on Pattern Anal. and Machine Intell, 1989,117, 11(7) :674-693.[4]Daubechies I. The wavelet transform, time-frequency location and signal analysis .IEEE Trans. on Information Theory, 1990,365, 36(5) :961-1005.[5]Besag J. Spatial interaction and the statistical analysis of lattice system .J. Roy. Statist. Soc. B, 1974,362, 36(2) :192-236.[6]Besag J. On the statistical analysis of dirty data .J. Roy. Statist. Soc. B, 1986,483, 48(3) :259-302.[7]Bouman C, Liu B. Multiple resolution segmentation of texture images .IEEE Trans. on Pattern Anal. and Machine Intell, 1991,132, 13(2) :99-113.[8]Geman S, Geman D. Stochastic relaxation, Gibbs distributions and the Bayesian restoration of images .IEEE Trans. on Pattern Anal. and Machine Intell, 1984,66, 6(6) :721-741.[9]Akaik H. A new look at the statistical model identification.IEEE Trans. ou Automat .Control, 1974,196, 19(6) :716-723.[10]Zhang J, Modestino J W, Langan D A. Maximum-likelihood parameter estimation for unsupervised stochastic model-based image segmentation .IEEE Trans. on Image Processing, 1994,34, 3(4) :404-420.[11]Ulaby F T, Elachi C. Radar Polarimetry for Geoscience Applications, Norwood, MA: Artech House Inc, 1990, Chapter 2, 24-25.[12]Srivastava S. On the complex Wishart distribution .Annals of Mathematical Statistics, 1965,362, 36(2) :313-315.[13]Guoqing Liu.[J].Shunji Huang, Torre A, Rubertone F. DuberOptimal multi-look polarimetric speckle reduction and its effect on terrain classification, in Proc. of IGARSS96, Lincoln, NE, USA: July.1515,1996:-
  • 加載中
計量
  • 文章訪問數(shù):  2554
  • HTML全文瀏覽量:  100
  • PDF下載量:  436
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  1998-10-16
  • 修回日期:  1999-05-22
  • 刊出日期:  2000-05-19

目錄

    /

    返回文章
    返回