A5046932356- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Video Analysis and Summarization
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Video Surveillance and Tracking Methods
- Human Pose and Action Recognition
- Geological and Geophysical Studies
- Anomaly Detection Techniques and Applications
- Evolution and Paleontology Studies
- Seismology and Earthquake Studies
- Multimedia Communication and Technology
- Geomagnetism and Paleomagnetism Studies
- Methane Hydrates and Related Phenomena
- Advanced Image and Video Retrieval Techniques
- Sports Dynamics and Biomechanics
- Gaze Tracking and Assistive Technology
- High-pressure geophysics and materials
- Geological Modeling and Analysis
- Urban and spatial planning
- Music and Audio Processing
- Image Retrieval and Classification Techniques
- Geological Studies and Exploration
- Virtual Reality Applications and Impacts
Japan Broadcasting Corporation (Japan)
2013-2024
Keio University
2014-2024
Geological Survey of Japan
1997-2017
Nihon University
2004-2015
Czech Academy of Sciences, Institute of Geology
2000-2015
National Institute of Advanced Industrial Science and Technology
2006-2014
The Graduate University for Advanced Studies, SOKENDAI
2012
Waseda University
2006-2009
Ibaraki University
1984-2006
Shimane University
2006
The need to quantitatively estimate future locations of volcanoes in the long‐term is increasing importance, partly as a result requirement constructing certain types installations regions low geologic risk. complex geological factors and natural processes controlling make it problematic patterns deterministically. Instead, probabilistic approach can be developed with quite high levels confidence; however, for few or no volcanoes, there include additional geophysical data that may indicate...
The ∼50 Myr old Izu–Bonin–Mariana (IBM) arc consists mostly of Oligocene middle and lower crust that underlies the upper crust; these units are in turn covered by Quaternary volcanic rocks. Seismic imaging, forearc geology, Ocean Drilling Program drilling magnetic anomalies suggest most IBM was created Eocene–Oligocene times. However, remnants this have never been found at northern end arc, where it is colliding with Honshu (Izu collision zone). Two batholiths zone (the Tanzawa tonalites...
Current models of Philippine Sea (PHS) Plate motion assume a general and large northward shift since the Eocene. In order to constrain better age amount this shift, we have conducted paleomagnetic study on drill gravity cores, respectively, taken from seafloor northern part PHS Plate. The core samples consist sedimentary rocks or semi-consolidated sediments, their ages, as estimated microfossils strontium isotope ratios, range Eocene late Miocene. results stepwise alternating-field thermal...
Coesite occurs in garnets from quartz schists and pelitic the Makbal Complex of Kyrgyzian Tien-Shan. The thick interbedded with are transitional facies after coesite schists. Quartz-pseudomorph also appears widely schists, but is rare eclogitic rocks. growth zoning Na-Ca amphiboles eclogites garnet-omphacite geothermometry indicate that metamorphic P-T paths different each. Ultra-high (UHP) pressure rocks mainly composed All eclogite lenses included host UHPM rocks, although most them do not...
We have developed a real-time ball tracking system that can be used for volleyball games. Although number of methods visual object been proposed, fast-moving is still challenging task because the motion blur and occlusion. thus use complementary scheme in which processes multiple cameras help each other sharing 3D position ball. The on camera accurately tracked by predicting its at next frame. positions measured drawing trajectory CG calculating statistical data related to movement....
Northeast (NE) Japan, where the Pacific Plate is subducted to west, frequently suffers large earthquakes not only along Japan Trench but also Sea side.Those occurred in former area (subduction-zone earthquake) such as 2011 off coast of Tohoku Earthquake can easily be understood a releasing process accumulated stress boundary between subducting and overlying plate.On contrary, those latter (inland earthquake), which occur at relatively shallow depth (<20 km), cannot explained by simple...
There is a need for systems that can automatically detect specific human actions in surveillance video. However, almost all of the action recognition techniques proposed so far are detecting relatively large within simple video sequences. To alleviate this shortcoming, we propose method crowd sequences real Our based on bag-of-features approach, and key-point trajectories used as its features. One problem cannot be directly input when using because they have various time lengths. overcome...
関東地方の中新統の地質,層序,岩相,層厚変化,堆積様式,変形等に基づく層序・構造モデルを構築し,その視点に立脚して関東平野西部の反射法地震探査断面(朝霞-鴻巣-邑楽測線)の地質学的解釈を試みた.関東地方の中新統~鮮新統は庭谷不整合を境に"N.8期堆積層"(16.5~15 Ma)と"post N.8期堆積層"(15 Ma~)の堆積ユニットに大別される.前者はハーフグラーベン埋積堆積物の有無により層厚が側方に変化し,基盤の起伏の主要な要因となっている.一方,後者は下位層をほぼ一様に被覆するが,利根川中流低地帯の地下では海退に伴うデルタ堆積物が厚く伏在する.関東平野の基盤構造は,中新世(N.8期末)に形成されたハーフグラーベンにより非対称な起伏が形成されている.吉見丘陵に先中新統基盤岩類(吉見変成岩類)が露出しているのは,日本海拡大時に吉見地域がハーフグラーベンを形成した傾動ブロックの非沈降部に位置していたためであると考えられる.
We describe a method that can detect specific human behaviors even in crowded surveillance video scenes. Our developed system recognizes based on the trajectories created by detecting and tracking people video. It detects using an HOG descriptor SVM classifier, it tracks regions calculating two-dimensional color histograms. identifies several behaviors, such as running meeting, analyzing similarities to reference trajectory of each behavior. Verification techniques backward optical flows...
A paleomagnetic study was conducted for well-dated volcanic rocks from the Middle Miocene Nijo Group in Mt. area, southwest (SW) Japan. Samples were collected 33 sites. Detailed stepwise demagnetization with both alternating-field and thermal techniques revealed well-determined site-mean directions 29 Tilt correction applicable to 13 sites, yielding an overall mean direction of D=352.2°, I=51.7°, α95=7.4° a pole at 84.3°N, 35.5°E, A95=8.5°. The bedding-tilt test passed 95% probability....
群馬県富岡地域に分布する海成中新統において, これまで複数の研究者により別個に報告されてきた浮遊性有孔虫化石について, 試料の採取地点をもとにそれぞれの層位関係を整理し, 年代層序学的に重要な有孔虫化石種の産出リストを作成した. また, 他のタクサについても, 年代学的に重要な種の産出層準を整理した. これらの浮遊性微化石層序とともに, 海成層に挟在する凝灰岩について測定された各種放射年代値に基づいて, 富岡地域の海成中新統の年代層序を総括した. 野外調査に基づいて従来の層序区分 (大石・高橋,1990) に若干の修正を加え, また庭谷不整合が観察される露頭の詳細を報告した. 庭谷不整合より下位層を富岡層群と再定義し, 不整合より上位の地層は安中層群として定義した.
An automatic pitch type recognition system has been developed. It is difficult to determine the automatically from a baseball broadcast video, so decision currently made by specialists that have expertise and experience in baseball. We developed incorporating of professionals. The identifies type, such as straight balls curveballs, single-view pitching sequences live broadcast. analyses ball trajectories using tracking catcher's stance mitt region well recognizing speed numbers superimposed...