• Broadcasting and Media Magazine
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• v.26 no.1
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• pp.38-49
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• 2021

최근 차세대 온라인 및 오프라인 실시간 3차원 실사 및 애니메이션 서비스를 위한 시스템 및 요소 기술 분야의 기술 개발 필요성이 대두됨에 따라 정부 차원의 다양한 기초/원천 R&D로부터 서비스, 사업화 및 상용화를 추진 중에 있다. 여기에는 게임, 체험, 테마파크, 플랫폼, 다면영상, 유통 등의 넓은 분야로 확장이 진행 중이다. 특히, 초실감의 혼합현실 구현을 위해, 실사로 처리 가능한 3D 컨텐츠 제작 및 통신 기술이 핵심 기술로 대두되고 있으며, 국내 환경을 살펴보면 삼성전자, SK텔레콤 등이 관련 서비스를 준비 중에 있으나, 미국의 경우는 MICROSOFT, Google 등이 홀로 렌즈 등을 이용한 혼합현실 기술을 일부 상용화하고 있는 것으로 보고되고 있다. 따라서 본 고에서는 3D 실사 그래픽스 기반의 컨텐츠 제작을 위한 객체인식 기술(AA), 동적 애니메이션 생성 및 처리 기술(AB), 동적 애니메이션 압축 및 전송 기술(AC) 관련 국제적 특허 동향을 분석하고 이를 바탕으로 향후 관련 분야의 시장을 전망하고자 한다.

• Fire Science and Engineering
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• v.33 no.6
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• pp.43-52
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• 2019

A walk-down procedure for fire modeling of nuclear power plants, based on deterministic fire protection requirements, was developed. The walk-down procedure includes checking the locations of safety shutdown equipment and cables that are not correctly indicated on drawings and identifying the existence and location of combustibles and ignition sources. In order to verify the performance of the walk-down procedure developed in this study, a sample of important equipment and cables were selected for hypothetical multiple spurious operation (MSO) scenarios. In addition, the hypothetical fire modeling scenarios were derived from the selected safe shutdown equipment and cables and an actual walk-down was conducted. The plant information collected through the walk-down was compared to the information obtained from the drawings, so that the collected information may be used as input values for the fire modeling.

• Cartoon and Animation Studies
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• s.11
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• pp.41-53
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• 2007

Due to the development of digital cinema, Animations are no longer a peripheral part of movies and become major role in making films, including live action movies. This kind of change makes the distinctive line between animations and live action movies vague. In order to prevent such side-effect, this study is aimed at building solid territory again between the two by reviewing the difference and, based on it, looking for effective cinematic techniques to produce synthesized and digitalized images. First of all, consideration on mise-en-scene is crucially required to tell this line. The mise-en-scene is a director's own unique style in making films. In other words, it is a symbol expressed by him/her. With the mise-en-scene, competitive directors explore huge possibility of image expression and know how to use it audiences can understand. Therefore, I look into a set of studies on the mise-en-scene and methodological problems because it is thought that the mise-en-scene is an important element to distinguish way of expression in animations, live action movies and digital cinema. In addition, owing to these fundamental differences, both movies have their own limitation on representation even though they imitate it each other. Synthesized images produced by both representation may not overcome that limitation and even worse bring up the lack of expression and the increase on unfamiliarity, which reduce audiences' interest. But ironically speaking, digital cinema accept each representation. And it serves as hindrance to narrative's delivery not to balance each of it. Therefore, digital cinema that integrate animations and live action movies should keep an eye on the overuse of images and pursue balanced mise-en-scene.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.9
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• pp.1214-1219
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• 2018

A variety of VR contents are being introduced as of 2017. VR contents are concentrated in the genre of games and interactive because of the difficulty of $360^{\circ}$ shooting production environment. Live action $360^{\circ}$ VR content has many problems due to the difficulty of the production environment. In this paper, a three - dimensional information value is generated in binocular disparity of a real image by using a re-light technique based on real image data. The generated 3D information values are combined with a technique of converting the depth information into a depth map and a re-light technique by installing virtual lighting on the surface formed in the 3D space. In order to solve the problem of lighting exposure, we apply the technique of re-lighting to the VR production pipeline by comparing and analyzing the result image of actual image and virtual image data.

• Journal of Broadcast Engineering
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• v.23 no.1
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• pp.63-73
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• 2018

These days, VR contents are created in three ways: CG based method, game engine based method, and live action shooting method. The most universal method is live action shooting. So far, most live actions are shot with action cams. Therefore, this method is different from professional image production method for movies and TV dramas. This study tries to point out the difference between professional image production method and action cam based shooting method, and proposes an alternative. The proposed method is log shooting based HDR filming and editing. As the result of test shooting and editing, the proposed method was able to obtain more color information than conventional action cam based shooting method and thereby to implement high-definition images which are hard in an action cam.

• Journal of Broadcast Engineering
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• v.4 no.2
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• pp.176-186
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• 1999

In order to produce an image that lends realism to audience in the virtual studio system. it is important to synchronize precisely between foreground objects and background image provided by computer graphics. In this paper, we propose a method of camera parameter extraction for the synchronization by tracking the pose of TV camera. We derive an equation for extracting camera parameters from inverse perspective equations for tracking the pose of the camera and 3-D transformation between base coordinates and estimated coordinates. We show the validity of the proposed method in terms of the accuracy ratio between the parameters computed from the equation and the real parameters that applied to a TV camera.

• Journal of Auto-vehicle Safety Association
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• v.12 no.2
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• pp.40-46
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• 2020

Modern traffic accidents are a complex occurrence. Various indicators are needed to analyze traffic accidents. Countries that have been investigating traffic accidents for a long time accumulate various data to analyze traffic accidents. The Korean In-Depth Accident Study (KIDAS) database collected damaged vehicles and severity of injury caused by Collision Deformation Classification code (CDC code), Abbreviated Injury Scale (AIS), and Injury Severity Score (ISS). As a result of the investigation, data relating to the injuries of the occupants can be easily obtained, but it was difficult to analyze human severity based on the information of the damaged vehicle. This study suggests a method to measure the speed change at the time of an accident, which is one of the most important indicators in the vehicle crash database, to help advance KIDAS research.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.529-530
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• 2014

Multiplanar image video has been used in various fields advertising, exhibitions, and PR. But the content is applied therein, image synthesis, and graphics in most cases. That for taking pictures become a stock video exactly not only very difficult, to complement work in the second half of the problems of the shooting stage is difficult. Therefore, in this study, and then grasp the problems later work with imaging and attempts to validate the experiment improvements. As the study specific method, it is intended to advance the experiments for determining the distance to minimize the distortion generated at the edges of the image varies with the distance between cameras. It is intended to contribute to the creation of the content of the image-based, which can be utilized more effectively excellence media of the video if to build on this.

• Journal of Auto-vehicle Safety Association
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• v.14 no.4
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• pp.77-83
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• 2022

Occupant behaviors and body contact with vehicle interior parts are main injury mechanism in far-side collisions. In vehicle side impact accident where the crash accident occurs on the opposite side of the vehicle from the a particular occupant, it is exposed in terms of relatively larger lateral motion to interact with the opposite side of the vehicle structure. The challenge of minimizing motions of upper body and injury risk according to a direct contact is a primary occupant protection research. This study has performed a data analysis of real-world accident database extracted from the 2016~2020 CISS database and a parametric investigation of impact angles and occupant kinematics in far-side lateral and oblique impact simulations. A detailed data analysis was conducted to reveal the relationship among the accident and injury data. Database analysis and computational far-side impact results proposed the fundamental vehicle design for safety improvement in far-side collisions.

• The Journal of the Korea Contents Association
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• v.10 no.8
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• pp.119-129
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• 2010

Recently, development of mobile service and increased demand for mobile device make mobile environment noticeable in computer graphics. Especially demand for 3D graphic services in mobile devices is steadily increased. However up to the present non-photorealistic rendering is mainly studied in desktop platform. In the result, existing research were designed for desktop computers and are not well-suited for mobile devices. Thus, there is a growing needs for processing techniques that provide the ability to render 3D non-photorealistic graphics through mobile devices. In this paper, we discuss processing techniques for non-photorealistic rendering that are especially cartoon shading and rendering in mobile devices. Through the result of this research, it is expected that silhouette edge rendering for mobile display environment and preprocessing file technique for shading. The efficiency of 3D mobile graphic service like 3D model in cartoon style is increased by using proposed preprocessing file and rendering pipeline. Our work can provide mobile cartoon rendering results and various mobile contents to users.