Ryosuke Ichikari

ORCID: 0000-0002-1784-0538
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About
Contact & Profiles
Research Areas
  • Augmented Reality Applications
  • Indoor and Outdoor Localization Technologies
  • Face recognition and analysis
  • Robotics and Sensor-Based Localization
  • Video Surveillance and Tracking Methods
  • Virtual Reality Applications and Impacts
  • Computer Graphics and Visualization Techniques
  • Advanced Vision and Imaging
  • 3D Surveying and Cultural Heritage
  • Stroke Rehabilitation and Recovery
  • Gaze Tracking and Assistive Technology
  • Human Mobility and Location-Based Analysis
  • 3D Shape Modeling and Analysis
  • 3D Modeling in Geospatial Applications
  • Inertial Sensor and Navigation
  • Telemedicine and Telehealth Implementation
  • Tactile and Sensory Interactions
  • Digital Transformation in Industry
  • Optical measurement and interference techniques
  • Interactive and Immersive Displays
  • Advanced Optical Imaging Technologies
  • Advanced Manufacturing and Logistics Optimization
  • Advanced Image and Video Retrieval Techniques
  • Innovation in Digital Healthcare Systems
  • Face and Expression Recognition

National Institute of Advanced Industrial Science and Technology
2015-2025

The University of Tokyo
2020-2025

Technology Holding (United States)
2024

National Institute of Informatics
2018

University of Southern California
2011-2016

Creative Technologies (United States)
2011-2016

Southern California University for Professional Studies
2015

USC Institute for Creative Technologies
2013

Ritsumeikan University
2006-2012

Every year, for ten years now, the IPIN competition has aimed at evaluating real-world indoor localisation systems by testing them in a realistic environment, with movement, using EvAAL framework. The provided unique overview of state-of-the-art systems, technologies, and methods positioning navigation purposes. Through fair comparison performance achieved each system, was able to identify most promising approaches pinpoint critical working conditions. In 2020, included 5 diverse off-site...

10.1109/jsen.2021.3083149 article EN cc-by IEEE Sensors Journal 2021-05-24

We present a process for rendering realistic facial performance with control of viewpoint and illumination. The is based on one or more high-quality geometry reflectance scans an actor in static poses, driven by video streams performance. compute optical flow correspondences between neighboring frames, sparse set frames. latter are made possible leveraging the relightability 3D to match viewpoint(s) appearance videos taken arbitrary environments. As tends proper correspondence some areas but...

10.1145/2638549 article EN ACM Transactions on Graphics 2014-12-29

Abstract This study introduces service robots to a restaurant company reduce work hours and improve quality. The industry must enhance productivity because it is the lowest in industry, but quality crucially important factor for added value. An automated guided vehicle (AGV) system stores was developed used Japanese cuisine restaurant. Service operations were changed. Work hour reduction confirmed. Sales per labor calculated confirm enhancement. Furthermore, staff working time place are...

10.1016/j.procir.2020.05.103 article EN Procedia CIRP 2020-01-01

Overview In 2008, the "Digital Emily" project [Alexander et al. 2009] showed how a set of high-resolution facial expressions scanned in light stage could be rigged into real-time photoreal digital character and driven with video-based animation techniques. However, Digital Emily was rendered offline, involved just front face, never seen tight closeup. this collaboration between Activision USC ICT shown at SIGGRAPH 2013's Real-Time Live venue, we endeavoured to create real-time, human which...

10.1145/2503385.2503387 article EN 2013-07-16

The main objectives of this project, launched in July 2021, is to mitigate and solve issues regarding health care services such as rehabilitation specific guidance while alleviating spatio-temporal, economic, cognitive constraints by establishing remote technology foundation. There are four themes project. In theme #1, we have been developing the MR <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> devices consisting Wear Mannequin for...

10.1109/vrw62533.2024.00048 article EN 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW) 2024-03-16

This paper presents a novel method for detecting the floor level of smartphone user in an indoor environment based on atmospheric pressure measured with sensors user's smartphone. Atmospheric is one most informative factors when estimating altitude, because its relative variation has strong correlation changes altitude. However, it difficult to directly estimate altitude observation absolute via smartphones, owing individual differences and climate. In this paper, we propose robust by...

10.1109/ipin.2015.7346776 article EN 2015-10-01

The performance of indoor localization methods is highly dependent on the situations in which they are used. Various competitions have been held for fairly comparing existing shared and controlled testing environments. However, it difficult to evaluate practical industrial scenarios through competitions. This paper introduces two competitions, named “PDR Challenge Warehouse Picking 2017” “xDR Operations 2018” tracking workers vehicles a warehouse scenario. For PDR 2017, we conducted unique...

10.3390/s19040763 article EN cc-by Sensors 2019-02-13

Creating and animating realistic 3D human faces is an important element of virtual reality, video games, other areas that involve interactive graphics. In this paper, we propose a system to generate photorealistic blendshape-based face models automatically using only single consumer RGB-D sensor. The capture processing requires no artistic expertise operate, takes 15 seconds facial expression, approximately 1 minute time per expression transform it into blendshape model. Our main...

10.1145/2915926.2915936 article EN 2016-05-13

In this paper, we introduce the outline of "The MR-PreViz Project" performed in Japan. pre-production process filmmaking, Pre Viz, pre-visualizing desired scene by CGI, is used as a new technique. As its advanced approach, propose that utilized mixed reality technology current PreViz. makes it possible to merge real background and computer-generated humans creatures open set or at outdoor location. The user can consider camerawork camera blocking efficiently using MR-PreViz. This paper...

10.1109/ismar.2006.297823 article EN 2006-10-01

Head-mounted cameras are an increasingly important tool for capturing facial performances to drive virtual characters. They provide a fixed, unoccluded view of the face, useful observing motion capture dots or as input video analysis. However, 2D imagery captured with these systems is typically affected by ambient light and generally fails record subtle 3D shape changes face performs. We have developed system that augments head-mounted camera LED-based photometric stereo. The allows...

10.1109/cvmp.2011.24 article EN 2011-11-01

Creating and animating a realistic 3D human face has been an important task in computer graphics. The capability of capturing the subject reanimate it quickly will find many applications games, training simulations, interactive In this paper, we propose system to capture photorealistic faces generate blendshape models automatically using only single commodity RGB-D sensor. Our method can rapidly set expressive facial poses from Microsoft Kinect requires no artistic expertise on part subject....

10.1145/2699276.2721398 article EN 2015-02-23

We present a technique for creating realistic facial animation from set of high-resolution static scans an actor's face driven by passive video the actor one or more viewpoints. capture geometry using multi-view stereo and gradient-based photometric [Ghosh et al. 2011]. The scan includes around 30 expressions largely inspired Facial Action Coding System (FACS). Examples input can be seen in Figure 1 (a). base topology is defined artist neutral each subject. dynamic performance shot under...

10.1145/2504459.2504501 article EN 2013-07-21

PreViz is a computer graphics movie that represents desired scenes in preproduction and useful for sharing the director's imagination among crews. Therefore, film industry looks upon as one of most important processes filmmaking become complicated [The Previs Society 2011]. Stereoscopic 3D (S3D) production not only changed ways expressiveness but also tools. Consequently, it requires more careful planning still important. This paper describes prototype S3D MR-PreViz system HD shooting using...

10.1145/2077378.2077396 article EN 2011-12-12

We have been developing a mixed reality system to support road maintenance using overlaid visual aids. Such requires positioning method that can provide sub-meter accuracy and function even if the appearance of surface changes significantly caused by many factors such as construction phase, time weather. Therefore, we are real-time worker be applied these situation integrating laser range finder (LRF) pedestrian dead-reckoning (PDR) data. In field, multiple workers move around workspace. it...

10.1109/ismar.2015.66 article EN 2015-09-01

In this paper, we present a review of the competition track organized by us at IPIN 2017. Our was named as "PDR challenge in warehouse picking". pedestrian dead-reckoning (PDR) focused on testing PDR methods under realistic scenario, which is tracking employees during picking operation warehouse. Firstly, introduce an overview including detailed information all evaluation metrics. Secondly, summarize results and findings from list challenges that should be tackled next competition. Thirdly,...

10.1109/ipin.2018.8533831 article EN 2018-09-01
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