Below are some other projects I have worked on in the past.




ClayVision is an augmented reality system that injects additional information to the urban landscape not through the prevailing approach of overlaying a number of floating panels and arrows, but through real-time transformations of the built environment, made possible using a combination of modern image processing techniques and a (drone-mapped) 3D city model. Users of the system can dynamically transform the city scenery in whatever way that suits their needs and preferences; for example, heights of nearby buildings may all be increased or decreased to reflect Yelp ratings if the user is looking for restaurants.

In collaboration with Ken Perlin.


Takeuchi, Y., Perlin, K. ClayVision: The (Elastic) Image of the City. In Proc. of the 30th ACM Conference on Human Factors in Computing Systems (CHI 2012). pp.2411-2420. Best Paper Award. Download (PDF, 3.9MB)


Parallel City

Parallel Cities are live, 3D simulations of cities that are constantly kept "true to life" by using real-time information extracted from SNS feeds, weather/traffic information, etc. The simulation is densely populated with people, cars, etc., whose behaviors may deviate from reality in their microscopic details, but are largely faithful at the coarse, macroscopic level. The user experience is comparable to having the power to open "windows" to any place in the world. This is also the engine behind MIMMI.


Takeuchi, Y. Parallel Cities. In Proc. of the 19th ACM Symposium on Virtual Reality Software and Technology (VRST 2013). pp.89-92. Download (PDF, 2.0MB)



MIMMI is a large-scale interactive installation set up in Minneapolis, USA during the summer months of 2013. The installation continuously analyzed the collective "mood" of the city by mining Twitter feeds, and expressed it using lighting, mist and sound. The project was carried out by an international, cross-disciplinary team of experts; I was in charge of developing the digital components. The piece was a finalist for the 2015 Architizer A+ Awards.

In collaboration with Bradley Cantrell, Jack Cochran, Carl Koepcke, Peter Mabardi, Artem Melikyan, Allen Sayegh and Ziyi Zhang.

2013年の夏の間、米国ミネアポリス市に設置された大型インスタレーションです。Twitterを解析して割り出したその時々の街の「気分」を、光や音、霧によって表情豊かに表現する構造物です。建築家・デザイナーとの共同制作で、私は主に技術面を担当しました。先端技術を応用した独創的な建築物として、2015 Architizer A+ Awardsに入賞を果たしています。


Weightless Wall

Weightless Walls are virtual, sound-blocking walls that can be created anywhere in a room. Users wear custom headsets, which allow them to engage in VoIP-like, but "spatially faithful" conversations. As the headsets block any natural sound entering users' ears, the setup effectively allows all conversations between users to be mediated by a central server, which performs real-time audio processing to produce realistic sensations of virtual walls. The system allows an entirely new class of workspace design to be realized, where workers can freely create acoustically isolated regions to have meetings, presentations, etc.


Takeuchi, Y. Weightless Walls and the Future Office. In Proc. of the 28th ACM Conference on Human Factors in Computing Systems (CHI 2010). pp.619-628. Download (PDF, 3.0MB)



Whirlstools is a concept for a kinetic street furniture system that encourages spontaneous communication in public spaces. When a slight angle is added to the top surface of a cylindrical stool, sitting in a particular direction becomes more comfortable than the others. By dynamically adjusting the orientations of vacant stools using a rotation mechanism, the system implicitly steers people into sitting face-to-face with one another, raising the likelihood of social interactions.

In collaboration with Jean You.


Takeuchi, Y., You, J. Whirlstools: Kinetic Furniture with Adaptive Affordance. In Ext. Abst. of the 32nd ACM Conference on Human Factors in Computing Systems (CHI 2014). pp.1885-1890. Download (PDF, 2.8MB)


Gilded Gait

Gilded Gait is an insole-shaped haptic interface system that alters perceptions of ground texture using vibrotactile feedback. The system is particularly useful for urban navigation; for example, a user can assign a distinct bumpy texture to the entire path leading to his/her destination in the city, e.g., hotel, train station, etc. The technology is an adaptation of haptic feedback for touchscreens, that create artificial "click" sensations using vibration.


Takeuchi, Y. Gilded Gait: Reshaping the Urban Experience with Augmented Footsteps.In Proc. of the 23rd ACM Symposium on User Interface Software and Technology (UIST 2010). pp.185-188. Download (PDF, 1.4MB)



Invisibot is a transparent robot, that jumps around from block to block. Although the robot itself is invisible, its expressive motions can be observed from footprints that appear on the blocks. The robot hops over when it finds another block nearby. Its jumping ability (relative to its body size) is such that it easily surpasses the human world record. The robot craves attention, and will begin stamping its feet in frustration if left alone.




Moirérium is a design concept for a passageway that uses moiré patterns for navigation. Its distinctive dual-layered walls exhibit a forward-moving moiré pattern to people walking in the "correct" direction (as if to push them forward), and show a backward-moving pattern to people walking in the opposite direction (as if to push them back). More complex navigation schemes can be supported by varying wall configurations.



Remembered Presence

Remembered Presence is a responsive furniture that captures traces of interactions through color change and physical deformation. Memories of human presence are left behind as glowing, evanescent silhouettes of light.

In collaboration with Helena Slosar and Melissa Kit Chow.


Howeler, E. (Ed.). GSD Platform 4. ACTAR, Harvard Graduate School of Design. 2011.



Clockzilla is a clock widget for (the now sadly discontinued) Sony dash, specifically designed so that nearsighted people can easily read the time. The widget tries to make the clock appear as large as possible, by only showing parts of the clock that are necessary to read the current time.

現在の時刻を読み取るのに必要な部分だけを拡大して表示する置き時計です。近視の人でも労せず時間を判読できます。自宅で使っていますが思った以上に便利なので、いずれRaspberry Piなど安価な部品の組み合わせで作り直して、Web上で作り方を公開したいと思っています。



Edoshop is an iPhone app (no longer available for download) that turns photos into ukiyo-e style images. The app reached 4th place in the Japanese iTunes Store Free App Ranking.