A
Akira Iwasaki
Researcher at University of Tokyo
Publications - 233
Citations - 5751
Akira Iwasaki is an academic researcher from University of Tokyo. The author has contributed to research in topics: Hyperspectral imaging & Multispectral image. The author has an hindex of 31, co-authored 228 publications receiving 4714 citations. Previous affiliations of Akira Iwasaki include National Institute of Advanced Industrial Science and Technology & Japanese Ministry of International Trade and Industry.
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Journal ArticleDOI
Coupled Nonnegative Matrix Factorization Unmixing for Hyperspectral and Multispectral Data Fusion
TL;DR: Simulations with various image data sets demonstrate that the CNMF algorithm can produce high-quality fused data both in terms of spatial and spectral domains, which contributes to the accurate identification and classification of materials observed at a high spatial resolution.
ASTER Global Digital Elevation Model Version 2 - summary of validation results
Tetushi Tachikawa,Manabu Kaku,Akira Iwasaki,Dean B. Gesch,Michael J. Oimoen,Zhaoxiang Zhang,Jeffrey J. Danielson,Tabatha Krieger,Bill Curtis,Jeff Haase,Michael Abrams,Claudia C. Carabajal +11 more
TL;DR: The ASTER GDEM (GDEM1) as mentioned in this paper was compiled from over 1.2 million scene-based DEMs covering land surfaces between 83°N and 83°S latitudes.
Proceedings ArticleDOI
Characteristics of ASTER GDEM version 2
TL;DR: Validation study of the trial and beta version of GDEM version 2 was carried out to investigate its characteristics such as geolocation error, elevation error and horizontal resolution, and confirmed that elevation offset and horizontalresolution will be greatly improved in version 2.
Journal ArticleDOI
The global distribution of pure anorthosite on the Moon
Makiko Ohtake,Tsuneo Matsunaga,Junichi Haruyama,Yasuhiro Yokota,Tomokatsu Morota,Chikatoshi Honda,Yoshiko Ogawa,Masaya Torii,Hideaki Miyamoto,Tomoko Arai,Naru Hirata,Akira Iwasaki,Ryosuke Nakamura,Takahiro Hiroi,Takamitsu Sugihara,Hiroshi Takeda,Hisashi Otake,Carle M. Pieters,Kazuto Saiki,Kohei Kitazato,Masanao Abe,Noriaki Asada,Hirohide Demura,Yasushi Yamaguchi,Sho Sasaki,Shinsuke Kodama,Junya Terazono,Motomaro Shirao,Atsushi Yamaji,Shigeyuki Minami,Hiroaki Akiyama,Jean-Luc Josset +31 more
TL;DR: If the upper crust of the lunar highland crust indeed consists of nearly 100 vol.% plagioclase, this is significantly higher than previous estimates, providing a valuable constraint on models of lunar magma ocean evolution.
Journal ArticleDOI
Validation of a crosstalk correction algorithm for ASTER/SWIR
Akira Iwasaki,Hideyuki Tonooka +1 more
TL;DR: A crosstalk correction algorithm is developed to improve the spectral separation performance of SWIR and is implemented in the preprocessing of higher level data products.