Kaori Ikematsu

2.5 Dimensional Panoramic Viewing Technique utilizing a Cylindrical Mirror Widget

We propose a panoramic viewing system, which applies the technique of Anamorphosis, mapping a 2D display onto a cylindrical mirror. In this system, a distorted scene image is shown on a flat panel display or tabletop surface. When a user places the cylindrical mirror on the display, the original image appears on the cylindrical mirror.By simply rotating the cylinder, a user can decide the direction to walk-through in VR world.

Anamorphicons: an Extended Display Utilizing a Cylindrical Mirror Widget

We propose an interactive system that implements the technique of Anamorphosis, with a flat-panel display and a cylindrical mirror. In this system, a distorted image is shown on a flat-panel display or a tabletop surface, and the original image will appear on the cylindrical mirror when a user puts it on the display. By detecting the position and rotation angle of the cylinder, the system provides interaction between the user and the image on the cylinder. We developed three applications using this device.

Flip-Flop Sticker: Force-to-Motion Type 3DoF Input Device for Capacitive Touch Surface

Figure 1. (a) Flip-Flop Sticker attached to the trackpad; (b) The structure of Flip-Flop Sticker; (c) Applying shear force (sliding to any optional direction) to PL is assigned as X/Y-axis operations and applying pressure force (pushing down) to PL/PR is assigned as Z-axis (+Z/-Z) operations; (d) The seesawlike mechanism enabling “upward” force feedback to a primary operation finger; (e) Flip-Flop Sticker can also be utilized as a head-mounted display adapter; (f) Applications : 3D (X/Y/Z) operation in 3D CAD and 3D Tic-Tac-Toe can be realized by orthogonal and intuitive operation.

Ohmic-Touch: Extending Touch Interaction by Indirect Touch through Resistive Objects

When an object is interposed between a touch surface and a finger/touch pen, the change in impedance caused by the object can be measured by the driver software. This phenomenon has been used to develop new interaction techniques. Unlike previous works that focused on the capacitance component in impedance, Ohmic-Touch enhances touch input modality by sensing resistance. Using 3D printers or inkjet printers with conductive materials and off-the-shelf electronic components/sensors, resistance is easily and precisely controllable. We implement mechanisms on touch surfaces based on the electrical resistance of the object: for example, to sense the touching position on an interposed object, to identify each object, and to sense light, force, or temperature by using resistors and sensors. Additionally, we conduct experimental studies that demonstrate that our technology has a recognition accuracy of the resistance value of 97%.

Asian CHI Symposium: Emerging HCI Research Collection

This symposium showcases the latest work from Japan and Southeast Asia on interactive systems and user interfaces that address under-explored problems and demonstrate unique approaches. In addition to circulating ideas and sharing a vision of future research in human-computer interaction, this symposium aims to foster social networks among young researchers and students and create a fresh research community.