کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6949203 1451236 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An unsupervised technique for optimal feature selection in attribute profiles for spectral-spatial classification of hyperspectral images
ترجمه فارسی عنوان
یک تکنیک بدون نظارت برای انتخاب ویژگی بهینه در پروفایل های ویژگی برای طبقه بندی طیفی-فضایی تصاویر هیپرتراسترال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر سیستم های اطلاعاتی
چکیده انگلیسی
Inclusion of spatial information along with spectral features play a significant role in classification of remote sensing images. Attribute profiles have already proved their ability to represent spatial information. In order to incorporate proper spatial information, multiple attributes are required and for each attribute large profiles need to be constructed by varying the filter parameter values within a wide range. Thus, the constructed profiles that represent spectral-spatial information of an hyperspectral image have huge dimension which leads to Hughes phenomenon and increases computational burden. To mitigate these problems, this work presents an unsupervised feature selection technique that selects a subset of filtered image from the constructed high dimensional multi-attribute profile which are sufficiently informative to discriminate well among classes. In this regard the proposed technique exploits genetic algorithms (GAs). The fitness function of GAs are defined in an unsupervised way with the help of mutual information. The effectiveness of the proposed technique is assessed using one-against-all support vector machine classifier. The experiments conducted on three hyperspectral data sets show the robustness of the proposed method in terms of computation time and classification accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: ISPRS Journal of Photogrammetry and Remote Sensing - Volume 138, April 2018, Pages 139-150
نویسندگان
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