Ryo Yamamoto

A VGA 30-fps Realtime Optical-Flow Processor Core for Moving Picture Recognition (2008)

MURACHI, Yuichiro, FUKUYAMA, Yuki, YAMAMOTO, Ryo, MIYAKOSHI, Junichi, KAWAGUCHI, Hiroshi, ISHIHARA, Hajime, ...

This paper describes an optical-flow processor core for real-time video recognition. The processor is based on the Pyramidal Lucas and Kanade (PLK) algorithm. It features a smaller chip area, higher...

Co-Regulation of Brassinosteroid Biosynthesis-Related Genes During Xylem Cell Differentiation (2007)

Yamamoto, Ryo, Fujioka, Shozo, Iwamoto, Kuninori, Demura, Taku, Takatsuto, Suguru, Yoshida, Shigeo, ...

To understand the regulatory mechanisms of brassinosteroid (BR) biosynthesis in specific plant developmental processes, we first investigated the accumulation profiles of BRs and sterols in xylem...

Lattice Model of Sweeping Interface for Drying Process in Water-Granule Mixture (2006)

Nakanishi, Hiizu, Yamamoto, Ryo, Hayase, Yumino, Mitarai, Namiko

Based on the invasion percolation model, a lattice model for the sweeping interface dynamics is constructed to describe the pattern forming process by a sweeping interface upon drying the...

On-Line Recognition of Handwritten Mathematical Expressions Based on Stroke-Based Stochastic Context-Free Grammar (2006)

Yamamoto, Ryo, Sako, Shinji, Nishimoto, Takuya, Sagayama, Shigeki

In this paper, we propose a new framework for online handwritten mathematical expression recognition. In this approach, we consider handwritten mathematical expressions as the output of stroke...

On-Line Recognition of Handwritten Mathematical Expressions Based on Stroke-Based Stochastic Context-Free Grammar (2006)

Yamamoto, Ryo, Sako, Shinji, Nishimoto, Takuya, Sagayama, Shigeki

In this paper, we propose a new framework for online handwritten mathematical expression recognition. In this approach, we consider handwritten mathematical expressions as the output of stroke...

On-Line Recognition of Handwritten Mathematical Expressions Based on Stroke-Based Stochastic Context-Free Grammar (2006)

Yamamoto, Ryo, Sako, Shinji, Nishimoto, Takuya, Sagayama, Shigeki

In this paper, we propose a new framework for online handwritten mathematical expression recognition. In this approach, we consider handwritten mathematical expressions as the output of stroke...

VLSI Architecture Study of a Real-Time Scalable Optical Flow Processor for Video Segmentation (2006)

MINEGISHI, Noriyuki, MIYAKOSHI, Junichi, KURODA, Yuki, KATAGIRI, Tadayoshi, FUKUYAMA, Yuki, YAMAMOTO, Ryo, ...

An optical flow processor architecture is proposed. It offers accuracy and image-size scalability for video segmentation extraction. The Hierarchical Optical flow Estimation (HOE) algorithm [1] is...

Brassinosteroids Induce Entry into the Final Stage of Tracheary Element Differentiation in Cultured Zinnia Cells (1997)

Yamamoto, Ryo, Demura, Taku, Fukuda, Hiroo

To elucidate the involvement of brassinosteroids in the progression of tracheary element differentiation in cultured Zinnia cells, we analyzed the effects of uniconazole, an inhibitor of...

Brassinosteroid Levels Increase Drastically Prior to Morphogenesis of Tracheary Elements

Yamamoto, Ryo, Fujioka, Shozo, Demura, Taku, Takatsuto, Suguru, Yoshida, Shigeo, Fukuda, Hiroo

As the first step toward understanding the involvement of endogenous brassinosteroids (BRs) in cytodifferentiation, we analyzed biosynthetic activities of BRs in zinnia (Zinnia elegans L. cv Canary...

Brassinosteroid Levels Increase Drastically Prior to Morphogenesis of Tracheary Elements

Yamamoto, Ryo, Fujioka, Shozo, Demura, Taku, Takatsuto, Suguru, Yoshida, Shigeo, Fukuda, Hiroo

As the first step toward understanding the involvement of endogenous brassinosteroids (BRs) in cytodifferentiation, we analyzed biosynthetic activities of BRs in zinnia (Zinnia elegans L. cv Canary...

Crystallization and preliminary X-ray crystallographic studies of the axin DIX domain

Shibata, Naoki, Tomimoto, Yusuke, Hanamura, Toru, Yamamoto, Ryo, Ueda, Mai, Ueda, Yasufumi, ...

The DIX domain of rat axin has been purified and crystallized. Crystals diffracted to 2.9 Å resolution using synchrotron radiation.