Portable freehand 3D ultrasound
A dual-rotary-encoder tracking framework for portable, freehand 3D breast ultrasound reconstruction.
PRIMA LAB IWATE · JAPAN
Beyond the
expected
Exploring human potential through intelligence, perception and technologies that work in the real world.
01 — 3D DISPLAY
02 — APPLIED AI
03 — VR / HERITAGE01 / 05 — RESEARCH IN MOTIONSCROLL TO DISCOVER ↓
01 / OUR PERSPECTIVE
PRIMA LAB · IWATE PREFECTURAL UNIVERSITY
Curiosity can
change the future
PRIMA LAB bridges AI, computer vision, sensing and XR to address challenges that matter to people. Research begins with simple questions—why does this happen, and what if we could change it? Through discussion, experimentation and prototyping, we turn curiosity into working technologies with potential impact in healthcare, industry, culture and everyday life.
We value careful thinking, experimentation and learning from failure over rushing to a single answer. By listening to people from different disciplines and cultures, we combine our strengths and tackle questions none of us could solve alone. Empathy for the people who will use our work is as important as technical expertise. We aim to be a place of intellectual excitement, generous collaboration and thoughtful discovery.
Let curiosity bring us together
02 / Immersive technologies
A new dimension
of seeing
We explore how VR, XR and three-dimensional displays can help people understand spaces and ideas through direct experience. Our work ranges from virtually reconstructing the historic Kunohe Castle to SpheriCul, a spherical display that opens new ways to share visual information. We design interactive experiences that invite people to explore, collaborate and discover, with applications in education, culture and industry.
Explore immersive research ↗Public image from the original research site03 / Research domains
Different disciplines. One curiosity
010203
Language & Vision Intelligence
Large language models, vision–language models, multimodal understanding and efficient AI.
Medical AI & 3D Ultrasound
Portable sensing, probe tracking and ultrasound reconstruction.
Computer Vision & Tracking
Detection, segmentation, person re-identification and identity consistency.
04 / Built in the lab
Research you can explore
Research becomes more compelling when you can interact with it. At PRIMA LAB, we transform ideas into working software so visitors can explore the science behind them firsthand. Inspect the interior of plum fruit through CT imagery, or manipulate a model of a growing tree. Compare views, rotate 3D structures and watch changes unfold to discover how research can address real-world challenges.
/01 — 3D VisualizationPlumbViewerCT-based candidate inspectionTry the interactive demo ↗
/02 — SimulationTree Growth SimulationExplore a tree as it growsTry the interactive demo ↗
/03 — Computer VisionPerson Re-identificationRemember a person by appearanceTry the interactive demo ↗
/03 — VR / CULTURAL HERITAGEKunohe Castle VRExplore a reconstructed historic castle in an interactive virtual environmentLaunch the VR experience ↗
Selected projects / 研究プロジェクト
Research with real impact
CORE-ReID
Domain adaptation and ensemble fusion for robust person re-identification.
Human depth perception
Assessment of spatial perception using cube and light-field displays.
Latest Publications / 最新論文
Ideas in print.
2026
Comparative Evaluation of Single- and Multi-Marker Pose Estimation for Freehand 3D Ultrasound Reconstruction
S.A. Irfan and O.D.A. Prima
ACHI 2026
2026
Memory-Driven Person ReID for Identity Consistency in Multi-Object Tracking
T. Pal, T.Q. Nguyen and O.D.A. Prima
ACHI 2026
2026
ORITRIP: Enhancing Person Re-IDentification with Orientation-Aware Triplet Loss
T.Q. Nguyen, S.A. Irfan, O.D.A. Prima, T. Pal, N.G.M. Thao, D.T.M. Nguyen
HUIT Journal of Science
Read publication ↗05 / Collaboration
Let’s build what
comes next
New ideas emerge when people with different experiences and perspectives work together. PRIMA LAB welcomes conversations with universities, research institutes, companies and communities. We connect AI, sensing, visual computing and XR with real challenges through experiments, prototypes and collaborative development. Whether you have a clear research question or simply a promising idea, we would love to explore what we can create together.
Contact us ↗