• 한국정보통신학회논문지
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• 제14권12호
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• pp.2675-2680
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• 2010

3D 그래픽을 처리하는 연산 과정에는 고정적인 연산만을 수행하는 영역과 Shader 등과 같은 명령어에 의한 프로그래밍이 요구되는 영역이 구분되어 있다. 이러한 3D 파이프라인의 특성을 고려하여 fixed 구조로 설계한 graphics hardware와 명령어 기반의 programmable hardware를 혼합한 구조로 설계하면 효율적인 그래픽 처리가 가능하다. 본 논문에서는 이러한 혼합 구조에 적합한 OpenGL ES(Open Graphics Library Embedded System) 2.0을 지원하는 Fragment Shader를 설계하였다. fixed hardware와 Shader간 데이터 입출력으로 인해 발생할 수 있는 전체 파이프라인의 지연을 줄일 수 있도록 내부 인터페이스를 최적화하였으며 Shader 내부 레지스터 그룹을 interleaved 구조로 설계하여 레지스터 면적과 처리 속도를 개선하였다.

• 한국산업융합학회 논문집
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• 제7권2호
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• pp.173-179
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• 2004

In this paper, we developed a Windows NT version off-line programming system which can simulate a track vehicle model in 3D graphics space. The track vehicle was adopted as an objective model. The interface between users and the off-line program system in the Windows NT's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D Graphics.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.586-589
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• 2006

High resolution satellite imagery is regarded as one of the important data sets to engineering application, as well as conventional scientific application. However, despite this general view, there are a few target applications using this information. In this study, the possibility for the future wide uses in associated with smart graphics of this information is investigated. The concept of smart graphics can be termed intelligent graphics with XML-based structure and knowledge related to semantic web, which is a useful component for the data dissemination framework model in a multi-layered web-based application. In the first step in this study, high resolution imagery is transformed to GML (Geographic Markup Language)-based structure with attribute schema and geo-references. In the second, this information is linked with GIS data sets, and this fused data set is represented in the X3D (eXtensible 3D), ISO-based web 3D graphic standard, with styling attributes, in the next stop. The main advantages of this approach using GML and X3D are the flourished representations of a source data according to user/clients’ needs and structured 3D visualization linked with other XML-based application. As for the demonstration of this scheme, 3D urban modelling case with actual data sets is presented.

• 한국컴퓨터정보학회논문지
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• 제21권2호
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• pp.89-96
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• 2016

This study analyzed with the case analysis of a series of processes from job analysis survey. And results analysis, and academic achievement in order to transform the curriculum of existing courses into the curriculum of NCS-based courses. Also this study analysed of the existing curriculum. Also analyzed the trend of workforce trends and needs of the broadcasting content industry. Through a needs analysis for the industry and alumni and students, video graphics, video editing and video directing were selected. In this paper, it dealt mainly with respect to the video graphics in a dual job. Modeling capability into the unit through a job analysis, animation, effects and lighting were chosen accordingly based introduction of 3D Graphics. Application of 3D Graphics were derived two courses and selected profiles and performance criteria. This training according to the NCS curriculum for students was evaluated based on the student's job was to investigate the learning ability. Academic achievement were the result satisfaction.

• 한국멀티미디어학회논문지
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• 제19권2호
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• pp.460-468
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• 2016

The teaching method of colleges and universities is traditionally lectures then professors has described orally in class and students has listened to accompanying with papers, mid-terms, and final exams. Jon Bergmann and Aaron Sams have developed new way of teaching called flipped learning; Classwork at home and homework in class. By adapting the method, this paper researched how efficient it is and what factors tutors should consider for better results. Specifically this research examined the flipped learning applying to basic 3D graphics class of J University in Korea and students answered surveys and took a couple of tests. Since the most students of the class did not have any background of 3D graphics, it was the first time for them to work with 3 dimensional space coordinate system. As a result, the research showed positive side of flipped learning like increasing peers' interest to the class and positive attitude about video lectures watched before coming to class.

• 대한임베디드공학회논문지
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• 제8권2호
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• pp.87-93
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• 2013

In this paper, we implemented and evaluated the performance of a vector-based rasterization algorithm of 3D graphics using a SIMD-based many-core processor that consists of 4,096 processing elements. In addition, we compared the performance and efficiency of the rasterization algorithm using the many-core processor and commercial GPU (Graphics Processing Unit) system which consists of 7 GPUs and each of which have 512 cores. Experimental results showed that the SIMD-based many-core processor outperforms the commercial GPU system in terms of execution time (3.13x speedup), energy efficiency (17.5x better), and area efficiency (13.3x better). These results demonstrate that the SIMD-based many-core processor has potential as an embedded mobile processor.

• 방송공학회논문지
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• 제2권1호
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• pp.36-44
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• 1997

2차원 지형정보의 고속 중첩 도시에 적합한 효율적인 3차원 지형 입체 도시 방안을 제안하였으며 벡터지도를 소프트웨어로 복원 도시 후 래스터화한 VRRG(Vector Restored Raster Graphics)의 지형 속성별 고유칼라인덱스를 이용하여 벡터 지도와 같이 지형 지물을 선택 도시하는 기능과 함께 선명한 2차원 래스터 지도를 3차원 지형 고도 위에 중첩 도시를 할 수 있게 되었으며 각종 상황 정보, 지형 분석 결과 둥의 중첩도시를 효율적으로 수행할 수 있게 되었다.

• 한국시뮬레이션학회논문지
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• 제8권2호
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• pp.13-28
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• 1999

The main purpose of this paper is to design and implement forest fire information system (FOFIS) for effective prevention of forest fire using GIS, database, 3-D graphics, and simulation techniques. In contrast to conventional fire information systems that are mostly based on the 2-D graphics and analytic modeling approaches, we have proposed the cell-based modeling approaches, i.e., spatial, data, and simulation modeling approaches. The cell-based spatial modeling is proposed by eliminating the cliff effect of the typical elevation model so that it can provide realistic 3-D graphics of the forest fire. The cell-based data modeling of geography, meteorology, and forestry information is also proposed. The cell-based dynamic modeling for forecasting of the fire diffusion is developed using the variable structure modeling techniques. Several simulation tests of FOFIS performed on a sample forest area of Chungdo, Kyungsangbukdo will demonstrate our approaches.

• 한국정보과학회논문지:소프트웨어및응용
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• 제32권1호
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• pp.34-40
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• 2005

엔지니어링 정보와 같은 3차원 정보의 시각화에는 CAD, 2D 컴퓨터그래픽, 3D 컴퓨터그래픽, 가상현실(VE)을 이용한 3차원적 표현 등 다양한 정보표현방식이 이용될 수 있으나, 이들 방식의 효과에 대한 비교연구는 매우 부족하다. 본 연구의 목적은 CAD, 2D 컴퓨터그래픽, 3D 컴퓨터그래픽, 가상현실의 한 형태인 증강현실 방식(AR)의 정보표현 방식에 대한 사용자의 호의도 및 심리적, 신체적 업무부하의 차이를 비교하는 것이다. 실험결과 사용자들은 정보제공방식 간에 업무부하의 차이는 없다고 보고하였으나, 2D 정보표현보다 3D 정보표현을 선호하였다 우리가 물체를 인식하는 방식과 동일한 방식으로 정보를 제공하는 AR방식은 인식정보의 병렬처리를 통하여 엔지니어링 정보제공에 유용한 수단으로 사용될 수 있음을 보여 주었다.

• IEIE Transactions on Smart Processing and Computing
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• 제4권2호
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• pp.65-70
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• 2015

In this paper, we describe the world's first real-time ray-tracing chip architecture. Ray-tracing technology generates high-quality 3D graphics images better than current rasterization technology by providing four essential light effects: shadow, reflection, refraction and transmission. The real-time ray-tracing chip named RayChip includes a real-time ray-tracing graphics processing unit and an accelerating tree-building unit. An ARM Ltd. central processing unit (CPU) and other peripherals are also included to support all processes of 3D graphics applications. Using the accelerating tree-building unit named RayTree to minimize the CPU load, the chip uses a low-end CPU and decreases both silicon area and power consumption. The evaluation results with RayChip show appropriate performance to support real-time ray tracing in high-definition (HD) resolution, while the rendered images are scaled to full HD resolution. The chip also integrates the Linux operating system and the familiar OpenGL for Embedded Systems application programming interface for easy application development.