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Horiuchi-Tanaka Lab (Information and Data Science)
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The lab uses measurement and experiments to uncover how things look and how people perceive them.
AboutAbout the lab
Connecting the physical world and the world of perception
The Horiuchi-Tanaka Lab studies the relationship between the physical world and the world of perception that people experience.
It clarifies the relationship between the two using data from physical measurements, psychophysical experiments, and psychophysiological experiments.
Centered on visual information such as images, the lab also studies smell and touch, as well as perception that combines multiple senses.
The results can be applied to devices that measure human perception, the design of images and lighting that appeal to emotions, and the creation of realistic content for the metaverse.
Key terms
- Psychophysical experiment
- An experiment in which people view stimuli such as light and color while they are varied, and how they perceive them is measured quantitatively
- Psychophysiological experiment
- An experiment that investigates how people perceive things by measuring bodily responses such as brain activity and heart rate
- Subpixel
- One of the small points of light, such as red, green, and blue, that make up a single pixel of a display
NewsLab news
A master's student received the Presentation Encouragement Award at the Annual Conference of the Color Science Association of Japan
A master's student received the Best Student Paper Award at the international conference Electronic Imaging
A master's student received the Presentation Encouragement Award at the Research Meeting of the Color Science Association of Japan
A doctoral student received the Best Student Paper Award at the international conference IDW
ResearchResearch themes
The lab clarifies the relationship between the physical world and the human perceptual world using data from physical measurements, psychophysical experiments, and psychophysiological experiments. It focuses on vision, and also studies smell and touch.
*Illustrative imageAdjusting the glossiness of objects in images
Photographing a scene or compressing an image can weaken the perceived glossiness of objects. The lab proposed a method for editing how glossiness appears for objects of various materials within a single image, and verified its effect using appearance evaluations and image statistics.
*Illustrative imageReproducing the Milky Way in planetariums
The lab investigates the physical factors needed to reproduce the Milky Way faithfully in a planetarium. It ran experiments in which participants rated fidelity, preference, and sense of depth while star transmittance, size, and density were varied, and built a model that estimates these ratings.
*Illustrative imageDesigning lighting that evokes emotions
Surrounding colors affect human emotions. Through psychophysical experiments, the lab showed that positive emotions such as happiness can be evoked reliably by lighting that spatially combines the color associated with the emotion and its opponent color.
*Illustrative imageDisplay subpixels and perceived resolution
Using two psychophysical experiments, the lab evaluated how the arrangement of a display's subpixels changes the resolution that people perceive. It found that the subpixel arrangement affects perceived resolution.
MembersFaculty
The members of the Horiuchi-Tanaka Lab are faculty and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakahiko Horiuchi
- Associate ProfessorMidori Tanaka
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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: “2023 Kolorymetr Datacolor Spyder 5 Pro (3)” Jacek Halicki / CC BY-SA 4.0 (cropped)
- Adjusting the glossiness of objects in images: “HTC Vive Virtual Reality Headset and Controllers” PB / CC BY-SA 4.0 (cropped)
- Reproducing the Milky Way in planetariums: “Manitoba Museum Planetarium” TMMCommunications / CC BY-SA 4.0 (cropped)
- Designing lighting that evokes emotions: “Lighting Designer SDF” Christopher Snape / CC BY 3.0 (cropped)
- Display subpixels and perceived resolution: “LCD subpixels” Politelyinsulting / CC BY-SA 3.0 (cropped)
- Related lab (溝上・佐藤研究室): “Farnsworth–Munsell Hue Color Vision Test, Material and Finishing Laboratory” Gabriela P. / CC BY 4.0 (cropped)
- Related lab (久保尋之 研究室): “Rendering techniques example, path tracing, realistic, Blender Cycles” KaiaVintr / CC BY-SA 4.0 (cropped)
- Related lab (黒岩・堀内研究室): “Ghanaian sign language interpreter working at University of Education Winneba” Uprising Man / CC BY-SA 4.0 (cropped)
- Related lab (関屋・グエン研究室): “Telecommunications towers of Bukit Nyabau, Bintulu” Wee Hong / CC BY-SA 4.0 (cropped)
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