Jiro Tanaka

University of Tsukuba · Compuer Science

A loyalty program is an important link between consumers and merchants in daily consumption. While new technologies (e.g. gamification, social networks, augmented reality, and so on) make it possible to strengthen this bond, their potential has not yet been fully exploited. In our research, we explore a novel approach to integrate gamification and...

The mobile robots are increasingly used in domestic space for room surveillance. However, joystick based controller dose not realize direct and intuitive motion control for monitor. To solve this problem, we propose an augmented reality based interface to control monitor from dual point of view, referring to the third-person view and rear first-per...

Advances on Human Interaction and Thinking - We create software to consolidate and store knowledge - Storing and handling knowledge is not easy - Humans users often bypass it for human interaction

In this paper, we investigate the effectiveness of two distinct techniques (Special Moment Approach and Spatial Frequency Approach) for reviewing the lifelogs, which were collected using a wearable camera and a bracelet, simultaneously for two days. Special moment approach is a technique for extracting episodic events. Spatial frequency approach is...

Nowadays humans are concerned more about their privacy because traditional text password becomes weaker to defend from various attacks. Meanwhile, somatosensory become popular, which makes gesture authentication become possible. This research tries to use humans dynamic hand gesture to make an authentication system, which should have low limitation...

Biometric authentication is popular in authentication systems, and gesture as a carrier of behavior characteristics has the advantages of being difficult to imitate and containing abundant information. This research aims to use three-dimensional (3D) depth information of gesture movement to perform authentication with less user effort. We propose a...

Point system is structured marketing strategy offered by retailers to motivate customers to keep buying goods or paying for the services. However, current point system is not enough for reflecting where points come from. In this paper, concept of point classification is put forward. Points are divided into different categories based on source. We i...

In this paper, our purpose is extending 2D multi-touch interaction to 3D space and presenting a universal multi-touch gestures for 3D space. We described a system that allows people to use their familiar multi-touch gestures in 3D space without touching surface. We called these midair gestures in 3D as 3D multi-touch-like gestures. There is no obje...

We developed a running support system using body movements as input in a realistic 3D Map. The users use their body movements to control movements in the 3D map. We used depth-camera sensor to track the user’s body joints movement as the user moves. The location changes are tracked real-time and the system calculates the speed, which will be used a...

Point system is structured marketing strategy offered by merchants to encourage consumers to continue to buy goods or pay for the services. According to the spending, merchants give consumers a certain amount of points as reward. These points can be exchanged into a good or service but not back into cash. However, as a result of the low rate of red...

We present Trip Together, a remote pair sightseeing system supporting gestural communication between a user remaining indoor and a remote partner going outside. With the integration of Head-mounted Display and Depth Camera, we allow the local user to perform a gestural interaction with the remote user on top of the remote scene while each user is p...

In this paper, we investigate the effectiveness of two distinct techniques (Special Moment Approach & Spatial Frequency Approach) for reviewing the lifelogs, which were collected by lifeloggers who were willing to use a wearable camera and a bracelet simultaneously for two days. Generally, Special moment approach is a technique for extracting episo...

In this paper we propose a novel pointing technique leveraging the user’s body motion to achieve smooth, efficient user experiences on wall-sized displays. Our proposal substantially consists of two parts: a graphical cursor controlled by the user’s hand motions, and mechanisms to assist the cursor manipulation by tracking the user’s face orientati...

Multitasking on digital media has a negative effect on mental health and concentration. At the same time, the negative effects of computer usage are not immediately obvious to most people. We suggest that people can improve their daily experience on the computer if they pay closer attention to their multitasking activities. To this end, we have con...

A system that allows a user to easily operate a computer or tablet while working on a desk was devised. In particular, the desk is changed into an input interface that can detect the touch of a hand. A device that acquires the position data of the hand and a software program that operates the computer or tablet using this device were developed. The...

In this paper, we propose a way to enable users to preview a modified version of objects in the real world with a mobile device's screen using techniques of augmented reality with live video. Here, we applied the methodology to develop a prototype system and an interface that enables users to modify fonts of designs of a poster put in an actual env...

A live video of a room shows a kind of presence information of the member in the room. It can be used to facilitate casual communication among distributed group members. However, only a live video image is not enough because it does not show future and past information. Therefore, we designed and implemented the KokaCam system that visualizes prese...

The meta-level representation of guarded Horn clauses (GHC) is considered and a GHC meta-computation system is constructed by enhancing the simple GHC metaprogram. Then the reflective guarded Horn clauses (RGHC) system is described, where a reflective tower can be constructed and collapsed in a dynamic manner, using reflective predicates. The imple...

This paper presents an overview of an experimental reflective programming system (ExReps). ExReps is an environment in which one can input programs and execute goals. It consists of two layers: the abstract machine layer and the execution system layer. Both layers are based on an enhanced metacall mechanism. Reflective operations are implemented on...

We developed a visual system generator called "Rainbow" which can handle layout constraints. The system can interactively layout figures while parsing them and make the parsed figures more understandable. Rainbow can deal with "soft layout constraints." Soft layout constraints automatically layout entire figures by using graph drawing algorithms. S...