Soon-Bum Lim

Development of a standard format for eBooks

Since an electronic book (eBook) has various advantages over a paper-based book, there is a growing interest in eBooks. EBook industries are using different document formats creating difficulties in the interoperability and interchangeability of eBooks. The U.S. and Japan have realized the importance of a standard format for eBooks and developed such standards. Recently, Korea has also developed a standard format based on XML. The primary goal of this standard is to support the interchangeability of eBooks, reflect the characteristics of the Korean publication environment, simplify the creation process, and promote compatibility with other standards. It includes an extension mechanism for various document classes, and supports advanced style control such as vertical writing and multi-column based on XSL.

Standardization of eBook documents in the Korean industry

An electronic book (eBook) has quite a few advantages over a paper-based book. However, several technical problems have not been solved until now in spite of the growing interest in eBooks, eBook industries are using different document formats with the result of difficulty in exchanging and sharing eBook contents and reinvestment in developing the related software. The US and Japan have realized the importance of a standard document format for eBooks, so they have developed the Open eBook Publication Structure (OEB PS) and JepaX, respectively, with the support from government agencies and related industries. Recently, the Electronic Book of Korea (EBK) has established a working group and developed a standard format based on the eXtensible Markup Language (XML) for eBooks. The goals of the standard include the explicit exchange of eBook contents reflecting the characteristics of the Korean publishing environment, simplicity in creation and exchangeability with the related formats. The standard supports the logical structure of various document classes as well as advanced style control such as vertical writing and multi-column editing based on XSL.

A sketch interface to empower novices to create 3D animations

Realistic character animation requires elaborate rigging built on top of high quality 3D models. Sophisticated anatomically based rigs are often the choice of visual effect studios where life-like animation of CG characters is the primary objective. However, rigging a character with a muscular-skeletal system is very involving and time-consuming process, even for professionals. Although, there have been recent research efforts to automate either all or some parts of the rigging process, the complexity of anatomically based rigging nonetheless opens up new research challenges. We propose a new method to automate anatomically based rigging that transfers an existing rig of one character to another. The method is based on a data interpolation in the surface and volume domain, where various rigging elements can be transferred between different models. As it only requires a small number of corresponding input feature points, users can produce highly detailed rigs for a variety of desired character with ease. Copyright

A layered scripting language technique for avatar behavior representation and control

The paper proposes a layered scripting language technique for representation and control of avatar behavior for simpler avatar control in various domain environments. We suggest three layered architecture which is consisted of task-level behavior, high-level motion, and primitive motion script language. These layers brides gap between application domain and implementation environments, so that end user can control the avatar through easy and simple task-level scripting language without concerning low-level animation and the script can be applied various implementations regardless of application domain types. Our goal is to support flexible and extensible representation and control of avatar behavior by layered approach separating application domains and implementation tools.

A Study on Sketch Input Technique by Surface of 3D Object for Collaboration.

The sketch technique, which can quickly and easily make expressions, is very useful in effectively adapting 3D virtual space technology to the collaboration. In order for the sketch technique to apply to the 3D virtual space, we need to solve the problem of inputting 2D sketch to a 3D virtual space and the phase difference that can occur during input. This research studies the input method of the 2D sketch to a targeted 3D object by selecting and creating a sketch plane of the section to sketch. We also tried to find the solution to the phase difference that occurs during input through the shifting of the View-point and the View-plane.

Spatial hypertext modeling for dynamic contents authoring system based on transclusion

This paper proposed a web content collecting model to reuse a variety of web contents based on Transclusion. Transclusion is a model for collecting existing web contents and including them into a new document. However, Transclusion lacks consideration of copyright issues and dynamic changes. Therefore, we classified Transclusions into three different types based on copyright restrictions: Trans-quotation, Trans-reference and Trans-annotation. Then we represented Transclusions in each different type of spatial hypertext model. Also, we designed RVS(ReVerse Syndication) model in order to trace the dynamic changes.

Definition of a layered avatar behavior script language for creating and reusing scenario scripts

An avatar script language consists of a set of commands which are used to control avatar behaviors in cyberspace. These script languages should be abstracted from complex low-level concepts such as DOF, so that users can create scenario scripts easily without having to be concerned about the physical properties of motion. Also, the scripts should be defined in a standard format and structure so that they can be reused in various applications. In the proposed system, we defined a layered script language for avatar behavior representation and control, which consists of task-level behavior, high-level motion and primitive motion script. The high-level behavior script provides abstract and domain-dependent avatar-object behavior interfaces to the user so that the user can easily create avatar scenario scripts, the high-level motion script represents the avatar motion sequence, and the primitive motion script represents the geometric information of the underlying tools for physical animation control. A presentation domain is chosen to apply the proposed script language, and empirical evaluation shows that a novice user can easily and quickly design a scenario script using the proposed interface

Mynews: personalization of web contents transcoding for mobile device users

Developing wireless internet service and mobile devices, web access mechanism is various. There are various methods for developing wireless internet services, mobile devices, and web access mechanism. However, the existing web infrastructure and content are designed for desktop computers and not well-suited for other types of accesses, e.g, PDA or mobile phone that have less processing power and memory, small screens, limited input facilities, or network bandwidth etc. Thus, there is a growing need for transcoding techniques that provide ability to browse the web through mobile devices. In this paper, we present personalized XML documents transcoding techniques for mobile device users.

Context-based free-form annotation in XML documents

When creating annotation information in a free-form environment, ambiguity arises during the analysis stage between geometric information and the annotations. This needs to be resolved so that the accurate creation of annotation information in a free-form annotation environment is possible. This paper identifies and analyses the ambiguities, specifying methods that are tailored to each of the various contexts that can cause conflicts with free-form marking in a XML-based annotation environment. The proposed general method is based on context which includes various textual and structure information between free-form marking and the annotations themselves. The context information used is expressed in context-based annotation markup language (CAML), a language defined within the paper. The results are printed and shared through a system specifically implemented for this study. The results from the implementation of the proposed method show that the annotated areas included in the free-form marking information are more accurate, achieving more accurate exchange results amongst multiple users in a heterogeneous document environment.

A study on 3D representation of declarative content for web platform based hybrid TV

This paper proposes a 3D representation method that can be used in web platform based hybrid 3DTV. In order to provide declarative content for stereoscopic TV service, we studied content separation and 3D representation techniques, including 3D positioning. As the result of this study, we have designed and implemented a 3D view volume for three dimensional spatial layout and stereoscopic rendering of each element by extending CSS. To verify the suggested method, we generated sample content and it demonstrated that the proposed method enables 2D-based content to be reused in 3D content. Moreover, this approach can be easily adopted for web platform-based content creation.