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Progressively Expanded Neural Network for Automatic Material Identification in Hyperspectral Imagery

Paheding, Sidike
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1481031970630722

Abstract Details

2016, Doctor of Philosophy (Ph.D.), University of Dayton, Electrical and Computer Engineering.
The science of hyperspectral remote sensing focuses on the exploitation of the spectral signatures of various materials to enhance capabilities including object detection, recognition, and material characterization. Hyperspectral imagery (HSI) has been extensively used for object detection and identification applications since it provides plenty of spectral information to uniquely identify materials by their reflectance spectra. HSI-based object detection algorithms can be generally classified into stochastic and deterministic approaches. Deterministic approaches are comparatively simple to apply since it is usually based on direct spectral similarity such as spectral angles or spectral correlation. In contrast, stochastic algorithms require statistical modeling and estimation for target class and non-target class. Over the decades, many single class object detection methods have been proposed in the literature, however, deterministic multiclass object detection in HSI has not been explored. In this work, we propose a deterministic multiclass object detection scheme, named class-associative spectral fringe-adjusted joint transform correlation. Human brain is capable of simultaneously processing high volumes of multi-modal data received every second of the day. In contrast, a machine sees input data simply as random binary numbers. Although machines are computationally efficient, they are inferior when comes to data abstraction and interpretation. Thus, mimicking the learning strength of human brain has been current trend in artificial intelligence. In this work, we present a biological inspired neural network, named progressively expanded neural network (PEN Net), based on nonlinear transformation of input neurons to a feature space for better pattern differentiation. In PEN Net, discrete fixed excitations are disassembled and scattered in the feature space as a nonlinear line. Each disassembled element on the line corresponds to a pattern with similar features. Unlike the conventional neural network where hidden neurons need to be iteratively adjusted to achieve better accuracy, our proposed PEN Net does not require hidden neurons tuning which achieves better computational efficiency, and it has also shown superior performance in HSI classification tasks compared to the state-of-the-arts. Spectral-spatial features based HSI classification framework has shown stronger strength compared to spectral-only based methods. In our lastly proposed technique, PEN Net is incorporated with multiscale spatial features (i.e., multiscale complete local binary pattern) to perform a spectral-spatial classification of HSI. Several experiments demonstrate excellent performance of our proposed technique compared to the more recent developed approaches.
Vijayan Asari (Advisor)
Raul Ordonez (Committee Member)
Eric Balster (Committee Member)
Muhammad Islam (Committee Member)
123 p.
Computer Engineering; Electrical Engineering; Remote Sensing
Hyperspectral imagery; neural network; object detection; classification; joint transform correlation; progressively expanded neural network; spectral-spatial features;

Recommended Citations

Citations

  • Paheding, S. (2016). Progressively Expanded Neural Network for Automatic Material Identification in Hyperspectral Imagery [Doctoral dissertation, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1481031970630722

    APA Style (7th edition)

  • Paheding, Sidike. Progressively Expanded Neural Network for Automatic Material Identification in Hyperspectral Imagery. 2016. University of Dayton, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1481031970630722.

    MLA Style (8th edition)

  • Paheding, Sidike. "Progressively Expanded Neural Network for Automatic Material Identification in Hyperspectral Imagery." Doctoral dissertation, University of Dayton, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1481031970630722

    Chicago Manual of Style (17th edition)

dayton1481031970630722
982
© 2016, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.