• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.413-414
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• 2009

본 논문은 스크립팅 기반의 탐구학습을 위한 가상현실 저작용 시스템인 SASILE을 보완하여 프로그래밍 경험이 없는 일반 사용자들이 손쉽게 탐구 학습을 위한 교육용 가상현실 환경을 구현하고 활용할 수 있도록 개발한 드로잉 인터페이스 기반의 DEVISE(Drawing Environment for VR-based Inquiry-learning Science Education)에 대해 설명한다. 그리고 간단한 사용성 평가를 통해 DEVISE의 효용성에 대해서 논한다.

• Journal of the Korea Society of Computer and Information
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• v.9 no.1
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• pp.45-54
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• 2004

A CAD and diagraming program of clothing and fashion design field within the country variously exist, but this paper implements design CAD and diagraming system based on diagraming piece with database system. Proposal system can be used quickly and easily to designer because of providing various diagraming piece. intend to utilize the data to diagraming piece provide with various classification and key word. 2D fashion design system provide GUI, various drawing tool, vector type document. application data based on XML, diverse library and easy mapping capacity for user.

• Journal of the Korea Computer Graphics Society
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• v.23 no.2
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• pp.11-22
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• 2017

This study proposes IMToon(IMage-based carToon) which is an image-based cartoon authoring system using an image processing algorithm. The proposed IMToon allows general users to easily and efficiently produce frames comprising cartoons based on image. The authoring system is designed largely with two functions: cartoon effector and interactive story editor. Cartoon effector automatically converts input images into a cartoon-style image, which consists of image-based cartoon shading and outline drawing steps. Image-based cartoon shading is to receive images of the desired scenes from users, separate brightness information from the color model of the input images, simplify them to a shading range of desired steps, and recreate them as cartoon-style images. Then, the final cartoon style images are created through the outline drawing step in which the outlines of the shaded images are applied through edge detection. Interactive story editor is used to enter text balloons and subtitles in a dialog structure to create one scene of the completed cartoon that delivers a story such as web-toon or comic book. In addition, the cartoon effector, which converts images into cartoon style, is expanded to videos so that it can be applied to videos as well as still images. Finally, various experiments are conducted to verify the possibility of easy and efficient production of cartoons that users want based on images with the proposed IMToon system.

• Journal of The Korean Association of Information Education
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• v.11 no.1
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• pp.107-116
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• 2007

To produce accurate editing results, the ambiguity of editing scopes related to marked correction signs should be solved. Proofreading the web document modifies the document structures, and the modified structures should be robustly valid for the defined DTD. This paper presents a pen-based proof-reading interface in the XML document. In the proposed interface, correction signs are free-drawn, and the editing scopes are recognized and revised based on the contexts of the document to minimize the ambiguity of the editing scopes. The proposed interface provides both implicit and explicit modification methods for document structures. As a result, the editing scopes processed in the proposed interface are more accurate, and the document structures are maintained valid for DTD after the editing.

• Journal of the Korean Society for Precision Engineering
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• v.19 no.8
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• pp.194-202
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• 2002

Die design of bonnet drawing is composed of upper die, lower die and blank holder. It has been performed by checked and re-design method, which cause economic and financial loss. Nowadays, CAD/CAM system is excellent, but application is low. Therefore, in specific item, drawing die of bonnet outer draw by 3-D lay-out. In this study purpose, Bonnet drawing die is designed rapidly, correctly. It's method that shape modify to resemble. This purpose lead to 3-D Lay-Out. It is to react the standard die. In rule relation, input data change all of the shape.

• Journal of the korean Society of Automotive Engineers
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• v.11 no.3
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• pp.49-59
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• 1989

The purpose of this paper is to obtain the effect of die lubrication in deep drawing process. The flange wrinkling is analysed by a moment equilibrium method in order to apply the optimum blankholding force to the blank. The experiment has been carried out with the high stiffness spring-type blankholder system. As the result, blankholding pressure is determined in terms of variables in deep drawing process. In the range of frictional coefficient which has been found in this experiment, there was a little difference in required blankholding force but a great difference in drawing force. It was found that the stiffness of blankholder was the major factor which influences on flange wrinkling in spring-type blankholder system.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2000.10a
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• pp.120-123
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• 2000

It is well known, for many years, that deep drawability can be improved by applying variable blank holding force. To apply variable blank holding force during cup during, we set up pressure controlling system on experimental hydraulic press, and the pressure control system is often called NC(Numerically Controlled) cushion system Using the NC cushion system we compared the drawability of square steel cups with NC cushion and that with conventional cushion. The results show drawability is greatly improved when the pressure control curve is designed in a S-shaped curve. This paper includes design details of the NC cushion system and experimental analysis of drawability with experimental NC cushion system.

• Electronics and Telecommunications Trends
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• v.21 no.1 s.97
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• pp.35-43
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• 2006

X 서버는 개발된 지 20년 동안 그리 큰 변경이 이루어지지 않았다. 하지만, 그래픽 하드웨어는 사양은 3D 그래픽 고성능으로 변화되었다. X 서버는 2D 그래픽을 처리하기위한 그래픽 시스템으로 설계되었다. 3D 그래픽 처리를 위해서 OpenGL 라이브러리를X 서버와 연동하는 작업을 해왔지만 구조적으로 3D 그래픽 드로잉을 처리하는 것은 X서버이기 때문에 성능에 한계를 드러내게 되었다. 마이크로소프트사 DirectX 구조처럼직접 그래픽 하드웨어를 제어해서 3D 그래픽 처리를 구현하고 있으며 리눅스 진영은X 서버와 공존하면서 3D 그래픽 처리를 향상시키기 위한 연구를 진행하고 있다. 본 고에서는 리눅스 진영에서 현재 진행중인 향상된 3D 그래픽 처리에 대한 기술 동향을 설명한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.04a
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• pp.766-770
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• 1996

In this study, a CAD/CAM system for axisymmetric deep drawing processes has been developed. An approach to the system is based on the knowledge based system. Under the environment of CAD/CAM software of Personal Designer, the system has been written in UPL. The geometries of intermediate and final object in deep drawing process, including processes parameters are input for the CAD/CAM system. The input data can be obtained from the results of Pro-Deep. The parts drawing of die sets for each process is generatedin tool design module of the CAD/CAM system. Also, the die assemblydrawings can be obtained. NC commands for machining of the part can be generated in the developed CAD/CAM system.

• Korean Journal of Computational Design and Engineering
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• v.4 no.1
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• pp.52-59
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• 1999

The CAD/CAM System for deep drawing transfer die tin mechanical press process has been developed. The developed CAD system can generate the drawing of transfer die in mechanical press. Using thee results from CAD system, it can generate the NC data to machine die's elements on the CAD system. This system can reduce design man-hour an human errors. In order to construct the system, it is used to automated the design process and generate the NC data using concepts of the designing rule and the machining rule. The developed system is based on the knowledge base system which is involved a lot of expert's technology in the practice field. Using AutoLISP language under the AutoCAD system, CTK customer language of SmartCAM is used as the overall CAD/CAM environment. Results of this system will be provide effective aids to the designer and manufacturer in this field.