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Your search keyword '"Zhuang, Huifu"' showing total 122 results
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122 results on '"Zhuang, Huifu"'

33. 融合多维度CNN的高光谱遥感图像分类算法

Author

刘金香 Liu Jinxiang, 班伟 Ban Wei, 陈宇 Chen Yu, 孙亚琴 Sun Yaqin, 庄会富 Zhuang Huifu, 富尔江 Fu Erjiang, and 张克非 Zhang Kefei

Subjects
Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2021

34. SAR Images Unsupervised Change Detection Based on Combination of Texture Feature Vector with Maximum Entropy Principle

Author

ZHUANG Huifu, DENG Kazhong, and FAN Hongdong

Subjects
Computer Science::Graphics, Computer Science::Computer Vision and Pattern Recognition, maximum entropy principle, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, lcsh:Mathematical geography. Cartography, GLCM, change detection, lcsh:GA1-1776, texture feature vector, SAR
Abstract

Generally, spatial-contextual information would be used in change detection because there is significant speckle noise in synthetic aperture radar(SAR) images. In this paper, using the rich texture information of SAR images, an unsupervised change detection approach to high-resolution SAR images based on texture feature vector and maximum entropy principle is proposed. The difference image is generated by using the 32-dimensional texture feature vector of gray-level co-occurrence matrix(GLCM). And the automatic threshold is obtained by maximum entropy principle. In this method, the appropriate window size to change detection is 11×11 according to the regression analysis of window size and precision index. The experimental results show that the proposed approach is better could both reduce the influence of speckle noise and improve the detection accuracy of high-resolution SAR image effectively; and it is better than Markov random field.

Published
2016

38. Dodder-transmitted mobile signals prime host plants for enhanced salt tolerance.

Author

Li, Shalan, Zhang, Jingxiong, Liu, Hui, Liu, Nian, Shen, Guojing, Zhuang, Huifu, and Wu, Jianqiang

Subjects
CUCUMBERS, HOST plants, SALT, PHOTOSYNTHETIC rates, GAS exchange in plants, ABIOTIC stress, STOMATA
Abstract

The dodders (Cuscuta spp.) are a genus of shoot parasites. In nature, a dodder often simultaneously parasitizes two or more neighboring hosts. Salt stress is a common abiotic stress for plants. It is unclear whether dodder transmits physiologically relevant salt stress-induced systemic signals among its hosts and whether these systemic signals affect the hosts' tolerance to salt stress. Here, we simultaneously parasitized two or more cucumber plants with dodder. We found that salt treatment of one host highly primed the connected host, which showed strong decreases in the extent of leaf withering and cell death in response to subsequent salt stress. Transcriptomic analysis indicated that 24 h after salt treatment of one cucumber, the transcriptome of the other dodder-connected cucumber largely resembled that of the salt-treated one, indicating that inter-plant systemic signals primed these dodder-connected cucumbers at least partly through transcriptomic reconfiguration. Furthermore, salt treatment of one of the cucumbers induced physiological changes, including altered proline contents, stomatal conductance, and photosynthetic rates, in both of the dodder-connected cucumbers. This study reveals a role of dodder in mediating salt-induced inter-plant signaling among dodder-connected hosts and highlights the physiological function of these mobile signals in plant–plant interactions under salt stress. [ABSTRACT FROM AUTHOR]

Published
2020
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