Juyoung Lee

Juyoung Lee

Ph.D. Candidate · KAIST UVR Lab

ejuyoung@kaist.ac.kr

Ph.D. candidate working on one of the most deceptively hard problems in HCI: making XR interactions good enough for everyday life.

Real-world use demands more than clever demos. Interactions need to be quick, subtle, and robust against false positives, especially when you're wearing smartglasses for hours, not just five minutes in a lab study. That's the thread running through my work on gesture, EOG, touch, and force-based input.

Advised by Prof. Woontack Woo · Collaborators: Thad Starner, Kai Kunze, Hui-Shyong Yeo

Why This Matters

Each research thread is driven by a concrete problem in everyday XR use.

πŸ₯½
Smartglasses

Glasses are already on your face. As an always-available, eyes-free platform, smartglasses offer input without the friction of reaching for a device.

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⌚
Smartwatch

The wrist is persistent, socially acceptable, and always within reach. A subtle wrist gesture is faster and less disruptive than pulling out a phone.

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πŸ‘‹
Gesture

Gestural input enables eyes-free, hands-busy control β€” letting technology respond to how you naturally move, without demanding your full attention.

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πŸ‘
EOG/EMG

Electrooculography turns eye movement into intentional input. Unlike gaze tracking, EOG works in bright or dark environments and does not require a front-facing camera.

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🀫
Subtle Interaction

Not every command needs to be visible. Subtle interaction keeps users in context β€” no loud voice commands, no conspicuous gestures that draw attention in public.

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🎯
False-positive Robustness

An interface that misfires on accident is worse than no interface. Robust activation cleanly separates deliberate commands from the noise of everyday movement.

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Research & Projects

For a full list, visit the CV page.

Whirling Interface
Whirling Interface
Smartglasses Gesture
GestureMark
GestureMark
Smartwatch Gesture
WRIST
WRIST
Smartwatch Gesture False-positive Robustness
SelfSync
SelfSync
Smartglasses Gesture False-positive Robustness
ItchyNose
ItchyNose
Smartglasses EOG/EMG Gesture Subtle Interaction
WatchMI
WatchMI
Smartwatch
Opisthenar
Opisthenar
Smartwatch Gesture
Smooth eye movement interaction using EOG glasses
Smooth eye movement interaction using EOG glasses
Smartglasses EOG/EMG
Vernacular Sound
Vernacular Sound
Others
Conquer to Fit
Conquer to Fit
Others
Coffee Brewing Helper
Coffee Brewing Helper
Others

Publication

Paper
[18] 2026 TVCG IEEE VR
Juyoung Lee, Hyunseo Seo, Hyunjin Lee, Minju Baeck, Hui-Shyong Yeo, Woontack Woo (2026). “Event-Based Referred Vibrotactile Feedback for Bare-Hand XR Interaction” [will be appear IEEE VR'26] IEEE Transactions on Visualization and Computer Graphics.
Gesture
[17] 2025 TVCG
Seo Young Oh, Junghoon Seo, Juyoung Lee, Boram Yoon, Sang Ho Yoon, Woontack Woo (2025). “ForceCtrl: Hand-Raycasting with User-Defined Pinch Force for Control-Display Gain Application” IEEE Transactions on Visualization and Computer Graphics. DOI
Gesture EOG/EMG
[16] 2024 ISMAR
Juyoung Lee, Seo Young Oh, Minju Baeck, Hui Shyong Yeo, Hyung-il Kim, Thad Starner, Woontack Woo (2024). “Whirling Interface: Hand-based Motion Matching Selection for Small Target on XR Displays” 2024 IEEE International Symposium on Mixed and Augmented Reality. DOI
Smartglasses Gesture
[15] 2024 AHs
Juyoung Lee, Minju Baeck, Hui-Shyong Yeo, Thad Starner, Woontack Woo (2024). “GestureMark: Shortcut Input Technique using Smartwatch Touch Gestures for XR Glasses” The Augmented Humans International Conference 2024. DOI
Smartwatch Gesture
[14] 2023 CHI
Hui-Shyong Yeo, Erwin Wu, Daehwa Kim, Juyoung Lee, Hyung-il Kim, Seo Young Oh, Luna Takagi, Woontack Woo, Hideki Koike, Aaron John Quigley (2023). “OmniSense: Exploring Novel Input Sensing and Interaction Techniques on Mobile Device with an Omni-Directional Camera” Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems. DOI
Gesture
[13] 2021 VR Journal
Yun Suen Pai, Marsel L. Bait, Juyoung Lee, Jingjing Xu, Roshan L Peiris, Woontack Woo, Mark Billinghurst, Kai Kunze (2021). “NapWell: An EOG-based Sleep Assistant Exploring the Effects of Virtual Reality on Sleep Onset” Virtual Reality. DOI
Smartglasses EOG/EMG
[12] 2020 TVCG
Gabyong Park, Antonis Argyros, Juyoung Lee, Woontack Woo (2020). “3D Hand Tracking in the Presence of Excessive Motion Blur” IEEE Transactions on Visualization and Computer Graphics. DOI
Gesture
[11] 2020 AHs
Richard Li, Juyoung Lee, Woontack Woo, Thad Starner (2020). “KissGlass: Greeting Gesture Recognition using Smart Glasses” Proceedings of the Augmented Humans International Conference. DOI
Smartglasses Gesture
[10] 2020 AHs
Hui-Shyong Yeo, Juyoung Lee, Andrea Bianchi, Alejandro Samboy, Hideki Koike, Woontack Woo, Aaron Quigley (2020). “WristLens: Enabling Single-Handed Surface Gesture Interaction for Wrist-Worn Devices Using Optical Motion Sensor” Proceedings of the Augmented Humans International Conference. DOI
Smartwatch Gesture
[9] 2019 UIST
Hui-Shyong Yeo, Erwin Wu, Juyoung Lee, Aaron Quigley, Hideki Koike (2019). “Opisthenar: Hand Poses and Finger Tapping Recognition by Observing Back of Hand Using Embedded Wrist Camera” Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology. DOI
Smartwatch Gesture
[8] 2019 MobileHCI
Hui-Shyong Yeo, Juyoung Lee, Hyung-il Kim, Aakar Gupta, Andrea Bianchi, Daniel Vogel, Hideki Koike, Woontack Woo, Aaron Quigley (2019). “WRIST: Watch-Ring Interaction and Sensing Technique for Wrist Gestures and Macro-Micro Pointing” Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services. DOI
Smartwatch Gesture False-positive Robustness
[7] 2019 ISWC
Juyoung Lee, Shaurye Aggarwal, Jason Wu, Thad Starner, Woontack Woo (2019). “SelfSync: exploring self-synchronous body-based hotword gestures for initiating interaction” Proceedings of the 23rd International Symposium on Wearable Computers. DOI
Smartglasses Gesture False-positive Robustness
[6] 2018 HCII
Juyoung Lee, Eunseok Kim, Jeongmin Yu, Junki Kim, Woontack Woo (2018). “Holistic Quantified Self Framework for Augmented Human” Distributed, Ambient and Pervasive Interactions: Technologies and Contexts. DOI
[5] 2017 ISWC
Juyoung Lee, Hui-Shyong Yeo, Murtaza Dhuliawala, Jedidiah Akano, Junichi Shimizu, Thad Starner, Aaron Quigley, Woontack Woo, Kai Kunze (2017). “Itchy nose: discreet gesture interaction using EOG sensors in smart eyewear” Proceedings of the 2017 ACM International Symposium on Wearable Computers. DOI
Smartglasses Gesture EOG/EMG Subtle Interaction
[4] 2017 MobileHCI
Hui-Shyong Yeo, Juyoung Lee, Andrea Bianchi, David Harris-Birtill, Aaron Quigley (2017). “SpeCam: sensing surface color and material with the front-facing camera of a mobile device” Proceedings of the 19th International Conference on Human-Computer Interaction with Mobile Devices and Services. DOI
Subtle Interaction
[3] 2016 ICMI
Murtaza Dhuliawala, Juyoung Lee, Junichi Shimizu, Andreas Bulling, Kai Kunze, Thad Starner, Woontack Woo (2016). “Smooth eye movement interaction using EOG glasses” Proceedings of the 18th ACM International Conference on Multimodal Interaction. DOI
Smartglasses EOG/EMG
[2] 2016 MobileHCI
Hui-Shyong Yeo, Juyoung Lee, Andrea Bianchi, Aaron Quigley (2016). “WatchMI: pressure touch, twist and pan gesture input on unmodified smartwatches” Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services. DOI
Smartwatch
[1] 2016 HCI-K
Seukwoo Lee, Juyoung Lee, Kiseul Suh, Youngyim Doh (2016). “A Mobile Game Design Study Using Gamification and Symbolization Strategies to Promote Daily Physical Activity” HCI Korea 2016. DOI
Poster / Demo
[10] 2025 ISMAR-Adj
Taejun Son, Juyoung Lee, Seo Young Oh, Woontack Woo (2025). “Round-Trip2 Gesture: Inplace IMU Gesture Recognition with Visual Guidance for Out-of-FOV Interaction” 2025 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct). DOI
Gesture EOG/EMG
[9] 2025 KSC
Hyunseo Seo, Juyoung Lee, Woontack Woo (2025). “Smart Glasses Framework for Real-time Holistic Self-Awareness based on Multi-modal Sensing” ν•œκ΅­μ •λ³΄κ³Όν•™νšŒ 2025 ν•œκ΅­μ»΄ν“¨ν„°μ’…ν•©ν•™μˆ λŒ€νšŒ 논문집. DOI
Smartglasses
[8] 2021 CHI-EA
Hui-Shyong Yeo, Juyoung Lee, Woontack Woo, Hideki Koike, Aaron J Quigley, Kai Kunze (2021). “JINSense: Repurposing Electrooculography Sensors on Smart Glass for Midair Gesture and Context Sensing” CHI EA '21: Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems. DOI
Smartglasses EOG/EMG
[7] 2018 ISMAR-Adj
Hyung-il Kim, Juyoung Lee, Hui-Shyong Yeo, Aaron Quigley, Woontack Woo (2018). “SWAG demo: smart watch assisted gesture interaction for mixed reality head-mounted displays” 2018 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct). DOI
Smartwatch Gesture
[6] 2018 AHs
Juyoung Lee, Hui-Shyong Yeo, Thad Starner, Aaron Quigley, Kai Kunze, Woontack Woo (2018). “Automated Data Gathering and Training Tool for Personalized "Itchy Nose"” Proceedings of the 9th Augmented Human International Conference. DOI
Smartglasses Gesture EOG/EMG Subtle Interaction
[5] 2016 UIST
Hui-Shyong Yeo, Juyoung Lee, Andrea Bianchi, Aaron Quigley (2016). “Sidetap & Slingshot Gestures on Unmodified Smartwatches” Proceedings of the 29th Annual Symposium on User Interface Software and Technology. DOI
Smartwatch Gesture
[4] 2016 UbiComp
Junichi Shimizu, Juyoung Lee, Murtaza Dhuliawala, Andreas Bulling, Thad Starner, Woontack Woo, Kai Kunze (2016). “Solar system: smooth pursuit interactions using EOG glasses” Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct. DOI
Smartglasses EOG/EMG
[3] 2016 MobileHCI
Hui-Shyong Yeo, Juyoung Lee, Andrea Bianchi, Aaron Quigley (2016). “WatchMI: applications of watch movement input on unmodified smartwatches” Proceedings of the 18th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct. DOI
Smartwatch
[2] 2016 ISEA
Sungeun An, Juyoung Lee, Sanghoon Shim, Ji-Hyun Lee (2016). “PlayLight: Enriching Music Experiences through Interactive Lighting Based on Motion” the 22nd International Symposium on Electronic Art(ISEA16). DOI
[1] 2016 ISEA
Joo Young Oh, Juyoung Lee, You Jin Lee, Kwang Yun Wohn (2016). “Vernacular Sound: System for Soundscaping of Everyday Objects” the 22nd International Symposium on Electronic Art(ISEA16). DOI

Community & Service

Tools, programs, and resources I help build and maintain.

ISWC 25 Years-Meta

As a fan of the Wearable Computing, managing the page with DB of publications from ISWC

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TLX Meta-Study

Aggregating NASA-TLX workload scores across HCI studies for meta-analysis.

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KAIST CT-AR Program

Managing the CT-AR program at KAIST.

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KAIST GSMV

Web Development & Academic Program Support | KAIST Graduate School of Metaverse

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