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Water and salt movement in different soil textures under various negative irrigating pressures 被引量:14
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作者 WANG Jia-jia HUANG Yuan-fang LONG Huai-yu 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第8期1874-1882,共9页
supported by the National High-Tech R&D Program of China (2013AA102901)
关键词 negative pressure irrigation volumetric water content soil salt content soil texture
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Hyperspectral image classification based on volumetric texture and dimensionality reduction 被引量:2
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作者 Hongjun SU Yehua SHENG +2 位作者 Peijun DU Chen CHEN Kui LIU 《Frontiers of Earth Science》 SCIE CAS CSCD 2015年第2期225-236,共12页
A novel approach using volumetric texture and reduced-spectral features is presented for hyperspectral image classification. Using this approach, the volumetric textural fea^res were extracted by volumetric gray-level... A novel approach using volumetric texture and reduced-spectral features is presented for hyperspectral image classification. Using this approach, the volumetric textural fea^res were extracted by volumetric gray-level co-occurrence matrices (VGLCM). The spectral features were extracted by minimum estimated abundance covar- iance (MEAC) and linear prediction (LP)-based band selection, and a semi-supervised k-means (SKM) cluster- ing method with deleting the worst cluster (SKMd) band- clustering algorithms. Moreover, four feature combination schemes were designed for hyperspectral image classifica- tion by using spectral and textural features. It has been proven that the proposed method using VGLCM outper- forms the gray-level co-occurrence matrices (GLCM) method, and the experimental results indicate that the combination of spectral information with volumetric textural features leads to an improved classification performance in hyperspectral imagery. 展开更多
关键词 hyperspectral imagery image classification volumetric textural feature spectral feature FUSION
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