Presentation 2018-03-14
Hierarchical quaternion neural networks with self-organizing codebook for unsupervised PolSAR land classification
Hyunsoo Kim, Akira Hirose,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We propose a self-organizing codebook-based hierarchical polarization feature vector generation to realize an unsupervised land classification with PolSAR (polarimetric synthetic aperture radar) data. PolSAR has reached the high-resolution of decimeter level. Conventional methods perform the spatial averaging in 10m to 20m square real-space area to classify observed land into categories such as farm, forest, and town. However, with this averaging, we can not expect to discover new detailed land classes by resolution improvement, since the resolution of the PolSAR data is lowered in the averaging process. Our proposal in this paper generates feature vectors useful for classifying the land pieces into categories while preserving the detailed polarization features in respective pixels of the high-resolution PolSAR data. Then, the method discovers the new detailed land classes that can be available only in the high-resolution PolSAR data.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) polarimetric synthetic aperture radar (PolSAR) / unsupervised land classification / high-resolution / hierarchical polarization feature / quaternion neural networks / Poincare parameter / auto-encoder / self-organizing map (SOM)
Paper # NC2017-88
Date of Issue 2018-03-06 (NC)

Conference Information
Committee MBE / NC
Conference Date 2018/3/13(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) ME, general
Chair Kazuki Nakajima(Univ. of Toyama) / Masafumi Hagiwara(Keio Univ.)
Vice Chair Masaki Kyoso(TCU) / Yutaka Hirata(Chubu Univ.)
Secretary Masaki Kyoso(Toyama Pref. Univ.) / Yutaka Hirata(Kindai Univ.)
Assistant Kim Juhyon(Univ. of Toyama) / Takumi Kobayashi(YNU) / Yoshihisa Shinozawa(Keio Univ.) / Keiichiro Inagaki(Chubu Univ.)

Paper Information
Registration To Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Hierarchical quaternion neural networks with self-organizing codebook for unsupervised PolSAR land classification
Sub Title (in English)
Keyword(1) polarimetric synthetic aperture radar (PolSAR)
Keyword(2) unsupervised land classification
Keyword(3) high-resolution
Keyword(4) hierarchical polarization feature
Keyword(5) quaternion neural networks
Keyword(6) Poincare parameter
Keyword(7) auto-encoder
Keyword(8) self-organizing map (SOM)
1st Author's Name Hyunsoo Kim
1st Author's Affiliation The University of Tokyo(Tokyo Univ.)
2nd Author's Name Akira Hirose
2nd Author's Affiliation The University of Tokyo(Tokyo Univ.)
Date 2018-03-14
Paper # NC2017-88
Volume (vol) vol.117
Number (no) NC-508
Page pp.pp.121-126(NC),
#Pages 6
Date of Issue 2018-03-06 (NC)