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Ujitoko Lab
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A lab that explores technology for conveying the feeling of touch, using human perception as a guide.
AboutAbout the lab
Understanding human perception to bring haptic presentation to society
Ujitoko Lab conducts fundamental research on touch, aiming to realize haptic presentation systems that let people feel the sensation of touching objects or other people.
Its main themes are understanding human perceptual characteristics, proposing haptic presentation techniques based on those characteristics, systematizing the needs and application scenarios for haptic presentation, and examining the specifications that haptic presentation systems should meet.
At the University of Electro-Communications, the lab collaborates with Prof. Hirota (Department of Informatics) and uses a high-density pin-array display built in-house to realize new haptic experiences and investigate human perception.
Research is conducted at NTT Communication Science Laboratories.
Students can join this lab from the graduate school level.
Key terms
- Haptic presentation
- Technology that gives the skin physical stimuli such as vibration, force, or heat to make a person feel the sensation of touching something.
- Pseudo-haptics
- A phenomenon in which a sense of touch is perceived through visual stimuli or similar cues, even though no physical stimulus is actually applied.
ResearchResearch themes
To create haptic presentation technology that is actually used in the world, it is important to understand the characteristics of human sensation and perception well and to devise technology that fits those characteristics. This lab investigates the fundamentals of touch through themes such as pseudo-haptics, the human desire to touch, high-density haptic displays, and design criteria for displays.
*Illustrative imagePseudo-haptics: changing the feel of touch through vision
The lab explores methods that create a pseudo sense of touch by intervening in visual stimuli, such as those shown when a pointer is operated. It studies ways to convey tactile information, such as changing the perceived roughness, friction, or weight, without large-scale haptic presentation devices.
*Illustrative imageInvestigating the human desire to touch
The lab investigates the feeling of wanting to touch something. By analyzing a huge number of posts on social media, it clarifies the reality of the desire to touch that lies hidden in daily life.
High-density pin-array displays
The lab works to increase the density and coverage area of pin-array haptic displays in order to convey richer information. Its topics include pin arrays pressed against the finger pad, pin arrays that wrap around the finger, the representation of textures inside objects, and the relationship between stimulus density and shape recognition.
*Illustrative imageDesign criteria for haptic displays
The lab examines how design factors of haptic displays, such as weight, affect users, and explores information useful for creating design guidelines. This research looks ahead to find out what designers wish they had known before building a display.
MembersFaculty
- Affiliated Associate ProfessorYusuke Ujitoko
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “X06Taiwan” Rico Shen / CC BY-SA 3.0 (cropped)
- Pseudo-haptics: changing the feel of touch through vision: “Team touching hands” Teak Sato / Public domain (cropped)
- Investigating the human desire to touch: “20171027-AMS-LSC- )” U.S. Department of Agriculture / Public domain (cropped)
- Design criteria for haptic displays: “Punktskriftsdisplay, Braille 18 cells” Gulundin / CC BY-SA 4.0 (cropped)
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