no code implementations • 12 Jul 2021 • Sho Ozaki, Shizuo Kaji, Kanabu Nawa, Toshikazu Imae, Atsushi Aoki, Takahiro Nakamoto, Takeshi Ohta, Yuki Nozawa, Hideomi Yamashita, Akihiro Haga, Keiichi Nakagawa
The proposed method is based on CycleGAN with several extensions tailored for CT images, which aims at preserving the structure in the processed images and reducing the amount of training data.
1 code implementation • ICML 2020 • Nozomi Hata, Shizuo Kaji, Akihiro Yoshida, Katsuki Fujisawa
Studies on acquiring appropriate continuous representations of discrete objects, such as graphs and knowledge base data, have been conducted by many researchers in the field of machine learning.
2 code implementations • 23 May 2020 • Shizuo Kaji, Takeki Sudo, Kazushi Ahara
We introduce Cubical Ripser for computing persistent homology of image and volume data (more precisely, weighted cubical complexes).
1 code implementation • 5 Sep 2019 • Shizuo Kaji
A closed linkage mechanism in three-dimensional space is an object comprising rigid bodies connected with hinges in a circular form like a rosary.
History and Overview Differential Geometry 14M06, 53A04
2 code implementations • 21 May 2019 • Shizuo Kaji, Satoshi Kida
We hope this article together with the codes will provide both an overview and the details of the key algorithms and will serve as a basis for developing new applications.
Medical Physics Image and Video Processing
1 code implementation • 15 Mar 2019 • Shizuo Kaji, Kenji Kajiwara, Hyeongki Park
A linkage mechanism consists of rigid bodies assembled by joints which can be used to translate and transfer motion from one form in one place to another.
Exactly Solvable and Integrable Systems
no code implementations • 6 Feb 2018 • Shizuo Kaji, Stephen Theriault
If $G$ is a compact connected Lie group and $T$ is a maximal torus, we give a wedge decomposition of $\Sigma G/T$ by identifying families of idempotents in cohomology.
Algebraic Topology 55P40, 55S37 (Primary) 57T15 (Secondary)
no code implementations • 27 Apr 2017 • Soojin Cho, Suyoung Choi, Shizuo Kaji
We give a combinatorial description of the $G$-module structure of the homology of $X^{\mathbb R}$.
Algebraic Topology Representation Theory 55U10, 14M25, 20C30, 20F55, 06A11
no code implementations • 23 Mar 2017 • Shizuo Kaji, Toshiaki Maeno, Koji Nuida, Yasuhide Numata
Let $\mathbb{F}_p$ be the finite field of prime order $p$.
Combinatorics 68R05, 12Y05
1 code implementation • 14 Mar 2016 • Alexandre Derouet-Jourdan, Shizuo Kaji, Yoshihiro Mizoguchi
We generalise their result by providing a linear algorithm to decide and solve the tiling problem for arbitrary planar regions with holes.
Discrete Mathematics Graphics 05B45, 52C20, 68R10 I.3.3; I.3.6
1 code implementation • 19 Jan 2016 • Shizuo Kaji
The As-Rigid-As-Possible (ARAP) shape deformation framework is a versatile technique for morphing, surface modelling, and mesh editing.
Graphics Computational Geometry I.3.5; I.3.7
2 code implementations • 8 Jan 2016 • Genki Matsuda, Shizuo Kaji, Hiroyuki Ochiai
We introduce a new presentation of the two dimensional rigid transformation which is more concise and efficient than the standard matrix presentation.
Graphics Computational Geometry I.3.5; I.3.3
2 code implementations • 19 Jul 2015 • Shizuo Kaji, Hiroyuki Ochiai
Good parametrisations of affine transformations are essential to interpolation, deformation, and analysis of shape, motion, and animation.
Graphics 68U05, 65D18, 65F60, 15A16 I.3.5; I.3.7
no code implementations • 9 Jun 2015 • Shizuo Kaji, Toshiaki Maeno, Koji Nuida, Yasuhide Numata
It is known that any $n$-variable function on a finite prime field of characteristic $p$ can be expressed as a polynomial over the same field with at most $p^n$ monomials.
Combinatorics Cryptography and Security Information Theory Information Theory Number Theory 11T06 (primary), 05E05, 68R05, 94A60
1 code implementation • 5 Apr 2015 • Shizuo Kaji
One of the main goals of the {\em equivariant Schubert calculus} is to study the $T$-equivariant cohomology $H^*_T(G/T)$ with regard to the $T$-action on $G/T$ by multiplication.
Algebraic Topology 57T15, 14M15