This is an interactive wall representing gravity according to human mass. The gravity is generated from the wall when a person gets close to the wall. To implement this, Microsoft's Direct Draw and Microrobot's computer vision board were used. The result of this work was exhibited in the 2005 Einstein Exhibition in Seoul National Science Museum from July 1, 2005 to March 1, 2006. This exhibition is hosted by the Korean Physical Society and the Korea Science Foundation to celebrate Einstein's great achievements.

This project is about a virtual aquarium in which virtual fishes are displaying on a large screen. In this virtual aquarium, all kinds of fishes are manipulated by physical pointers that include human hands (see the picture on the left). For example, when a fish is touched by a hand, its information is displayed to provide further information. A computer vision system and an image processing techniques are used to detect both the real and the virtual objects. This project was presented at the EDMEDIA 2004 conference.

This project is about an on/off line mixed interactive game in which the game is played on the floor using real and virtual objects and as many players can join the game as desired. Users can catch the fire-shaped virtual objects using bamboo-shaped real objects. A computer vision system was used in order to detect the collisions between the real and virtual objects, and a beam projector was used to display virtual scenes on a floor. The result of this project was presented in the IEEE SMC in 2004.

This project presents the AR-CAVE (Augmented Reality connected CAVE) platform that enables embodied interaction and tangible manipulations from a set of augmented reality (AR) remote site to integrate physical free body interactions in a CAVE system. Combining an AR environment with an immersive virtual environment (VE) can reduce interaction gaps and provide embodied interactions in distributed collaborative works. It can also provide many opportunities and degrees of freedom for collaboration in both real and virtual worlds. In the AR-CAVE, gesture-based inputs from the AR site provide variety of input and output modalities to the VE site. The result of this work was presented at ICARA 2006.

This is a battle ship simulation game installed in the Children's Museum of South Korea. This game is running based on physics and a real warship model which has an accelerator, a steering gear, and shooting mechanisms. Microsoft DirectX 8.0 was used to render scenes and detect the user inputs.

This is a gait simulator of human for analyzing walking pattens of patients at Seoul Bo-Hun Hospital. This project was performed with a faculty member at Seoul Health College. The main function of this software is to represent the joint motions of lower half of the body. There are 15 joints in total without dummy joints. The 7 joints of the 15 are located in each leg and one joint is on the pelvis. We used the previous research results of the 3D articulated figure animation. Open GL is used for displaying a 3D human character under an IBM compatible PC.

Most Avatars need an extra supporting program called a plug-in to convert the 2D axis to 3D axis of screen. Concerning this point, we developed a 2.5 dimensional Avatar called Live Avatar. It does not needs any plug-ins but it is shown like 3D. In this project, we used 3D Studio Max to make 3D models and developed a motion builder software to make a cell animation. This application can be used as a Web Agent in the field of general Internet application area.

This motivation of this project is to show the 2002 Sangahm Worldcup Stadium to domestic and international people through the Web. A 3D model of the Sangahm Worldcup Stadium was constructed and it was plugged to a webpage. To control and navigate the 3D model, several control points were programmed with Java. This project was partially supported by the Seoul Regional Government Agency.

This is a simulation project of concrete. The OpenGL with MS's Visuals C++ 6.0 was used. This concrete simulation software has several conditional parameters such as time and types of materials . This project was funded by MOST (Ministry of Science and Technology).

This project is a driving simulator for on-line driving education. A user can change the direction of the car to the left or right as well as adjust the speed of the car as faster or slower. VRML (Virtual Reality Modeling Language) was used to construct a car and other 3D objects and Java was used to programm them. This project was supported by M&D Info and MIC (Ministry of Information and Communication).

This is a 3D Avatar chatting application implemented based on a facial animation engine.It is running on an IBM compatible pc and the chatting avatar can generate various shapes such as smiling, angry, surprising, etc. The OpenGL with Visuals C++5.0 was used to render the scene and control the face.

This is a script-based animation tool for creating 3D articulated human figure animation generating walking and running motions. TGS's Open Inventor 2.5 with Visuals C++5.0 was used to render human characters and generate motions. This project was funded by ETRI (Electronics and Telecommunications Research Institute).

This is a human running simulation implemented based on the PUMA Robot simulator below. It is built based on the principle of robot arm generating a circular motion. OpenGL with Visual C++ 5.0 was used.

This is a PUMA Robot simulator moving according to the predefined trajectories. The trajectory is generated by an internal timer, and OpenGL with Visual C++ 4.0 was used to render the trajectories. The human running motion above was relaized based on the results of this work.

This project is about controlling and generating gestures of 3D virtual human using kinematics. This work was conductd with several teams: ETRI (Electronics and Telecommunications Research Institute), POSTECH (Pohang University of Science and Technology), Soongsil University, VicComm Corporation, and Sungkyunkwan University. This project consisted of four core modules: 3D modeler; motion generator, motion controller using inverse kinematics, and particle animation. The avatar was represented by OpenGL and Open Inventor with Visual C++ 4.0. The results of this project were published in SMC98 and HCI99.

This is a virtual reality bicycle simulator conducted when I was in Samsung Software Membership. TGS's Open Inventor was used to render a 3D bicycle and VC++ 4.0 was used to control sensors and process data from two encoders. A force sensor was installed in the bicycle to get force feedback while a user pedaled. The two encoders were installed in each wheel to check the bicycle's speed and directions. The results of this work were published in KACC'98 and KACC'97

This project is about developing a costomized browser for an information Kiosk, which is connected to the Internet or a local database. The browser can display the web contents as well as pictures from a camera installed in the kiosk. The Kiosk was used by TouchNet Co.

One day, I wanted to see music, not only listen to. The Flash Speaker is for representing sound visually with aural information. It represents the sound as lights (colors) according to the rhythms. To represent sound into lights, first software analyzed the frequency every each time and then mapped the frequency to pre-defined lights. The patent of the Flash Speaker was licensed by Samsung Electro-Mechanics Co.

Most TV quiz programs are conducting inside. This project is about an interactive game in which participants can join a game from both on-line and off-line by using the Internet or phone. This project was conducted with KBS (Korea Broadcasting System).

This is a subway exit and transfer information software telling the user which exit is closer to the destination and which subway line is better to transfer.

This is my first project with DBASE. A shop management program was implemented which manages borrowing, receiving and cashing between customers and the owner. After this project, I used to other database programs such as Fox Pro and Clipper.

T3 PANORAMA is an image stitching software to make a panoramic image. This project was funded by MIC (Ministry of Information and Communication). The software consist of mainly three parts: image pre-processing, image stitching, and publishing. MS's Visual C++6.0 was used for making a builder and Java was used for publisher an applet. Final result of this software was packaged as seen on the left thumb nail image..

When I took part in a trade show, one sales man gave me a paper-based brochure but I wanted to see a real product. However, giving a real product to a visiter is difficult in case the size of the product is big or its cost is expensive. The 3D eCatalog is a web based interactive 3D catalog displaying porducts in 3D on the web or CD-ROM.

This is a upgrade version of T3STUDIO 1.0. This version includes 360 object VR making software that makes a 3D using several serialized digital images.

As seen on the left side, the VR STUDIO is a set of digital devices equipped with several photographing devices. The VR STUDIO consists of four components: lights, turntable to rotate an object, camera to take pictures, and screen to make a background.

This is a semiconductor inspection software using Matrox's computer vision system. The main functions of the software are capturing a wiper, drawing lines or typing texts, sending an image via the Internet, and contacting a supervisor. A system can be controlled by a stopper, because a worker's hands are busy for their work. This system was installed in a factory in Samsung Electronics Co. and Anam Semiconductor Co.

Most iInternet shopping malls upload 2D images of their products on the web to sell them. However, customers want to see various points of a real product although they look at it on the Web. To remove this problem, we developed a 3D object making software using serialized digital images called T3STUDIO. The T3STUDIO is a 360 object VR making software, which displays an object as 3D.

This is a digital album builder. Using this software, a user can change color, insert texts, and draw lines on their picture. MS Visuals C++ 5.0 and a computer vision board were used to capture an image and overy graphics..

This is an image synthesizing project called Cyber Photo Cody. Using this system, A user can make photo stickers as well as synthesized images. A computer vision board of Integral was used.

This project is about making synchronization engine for binding data between DVDs and the location of LEDs. In this system, an input came from a touch screen monitor when a user touches to see specific DVD. To control DVD players, RS232 ports of a oc were used..

This project is about making a 3D game similar to Doom playing on a mobile phone. MS's EVT4.0 and KTF's (one of big telecom service provider in Korea) mobile phone were used. The game consists of three stages and has similar scenario as in a traditional Doom game.

This is about 2D Barcode creation and management software for business card consisted of two main programs: Barcode Publishing and Barcode Management. This project was funded by SMBA (Small and Medium Business Administration of Korea).

This project is about controling multiple motors using a realtime os VRTX of Mento Graphics. A KVME041 single board computer of HANA Systems, Inc was used. This project was investigated when I was an adjunct researcher in the Intelligent Control Center at KIST (Korea Institute of Science and Technology).

This is a SCARA Robot control project using a real time OS, VRTX of Microtech. A MVME162 of Motorola's single board computer was used with Unix system.

This project is about home automation system controlled by an answering machine. Computer programs such as MS-WORD, Webcam, and EXCEL can be run using this program. The result of this project was awarded the best paper award by Seodu Logic Inc.

A line tracer checking an error was implemented in this project using 80196 and 68000 micro processors. This control board was installed at the condenser manufacturing building in Samsung Electro-Mechanics Co.

Typically, a TV picture tube has 3:4 aspect ratios. This project is about developing a new TV called Wide TV, which has 16:9 screen ratios. In this project, I took a role in developing deflection york for the 16:9 screen ratios in Samsung Electronics Co. My research team produced the first version of wide vision TV called WT3200 for the first time in Korea.

An OSD (On Screen Display) is my first project achieved at Samsung Electronics Co. The purpose of OSD is to display texts on a TV screen and thus a user can communicate with a system. For example, a user can see a number or symbol when he or she changes volume using a remote. In this project, a Samsung micom was used with a Toshiba's one-chip IC.

This is a casual game playing like a Japanese slot machine. I made various of casual games using transistors and TTL ICs while in my high school, Gumi National Electronic Technical High School. During this period, I have achieved six national level technical licenses.