• 한국정보과학회논문지:시스템및이론
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• 제33권11호
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• pp.853-858
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• 2006

본 논문에서는 깊이 영상기반의 3차원 그래픽 객체에 대하여 그래픽 처리 장치(Graphics Processing Unit, GPU)의 가속을 이용한 고속의 렌더링 기법을 제안한다. 제안하는 알고리즘은 최근의 그래픽 처리 장치의 새로운 특징과 프로그래밍이 가능한 쉐이더 기법을 이용하여, 속도가 느리거나 정적인 조명과 같은 기존의 일반적인 깊이 영상기반 렌더링 방법이 갖고 있는 단점을 극복할 수 있다. 깊이 영상기반 데이타의 3차원 변환 및 조명에 의한 효과 연산은 정점 쉐이더(vertex shader)에서 수행을 하고, 점 데이타의 적응적인 스플래팅(splatting)은 화소 쉐이더(fragment shader)에서 수행된다. 모의 실험결과, 소프트웨어 렌더링 또는 OpenGL 기반의 렌더링과 비교해서 괄목할 만한 렌더링 속도의 향상이 이루어졌다.

• 정보보호학회논문지
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• 제18권3호
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• pp.23-32
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• 2008

그래픽 프로세서(GPU)의 연산 능력은 이미 CPU를 능가하고 있으며, 그 격차는 점점 벌어지고 있다. 따라서, 범용 계산에 그래픽 프로세서를 활용하는 GPGPU 연구가 활발히 전개되고 있으며, 병렬 처리가 필요한 분야에서 특히 두드러진 성과를 보이고 있다. GPU를 이용한 암호 알고리즘의 구현은 2005년 Cook 등에 의하여 처음 시도되었으며, OpenGL, DirectX 등의 라이브러리를 이용하여 개선된 결과들이 속속 발표되고 있다. 본 논문에서는 2007년 발표된 NVIDIA의 CUDA 라이브러리를 이용한 블록암호 구현 기법과 그 결과를 소개하고자한다. 또한, 소프트웨어로 구현된 블록암호 소스를 GPU 프로그램으로 이식하는 일반적인 방법을 제공하고자 한다. 8800GTX GPU에서 블록암호 AES, ARIA, DES를 구현했으며, 속도는 각각 4.5Gbps, 7.0Gbps, 2.8Gbps로 CPU보다 고속 구현이 가능하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.281-284
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• 2008

최근 OpenGL ES 2.0이 개정됨에 따라 모바일 기기에 Shader 3.0모델을 지원 가능한 프로세서가 요구된다. 이 쉐이더 3.0 모델의 지원과 관련하여 명령어의 길이의 증가가 필요하고, 이는 메모리 용량의 증가를 초래한다. 본 논문에서는 가변길이 구조와 유닛구조를 채택한 새로운 명령어 구조를 제안한다. 이 명령어 구조는 쉐이더 3.0 모델을 지원하고 명령어 필드 낭비를 줄일 수 있도록 최대 4개의 32비트 유닛 명령어가 가변적으로 조합되어 수행된다.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2002년도 춘계학술대회 논문집
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• pp.398-403
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• 2002

We developed a Off-Line Graphic Simulator which can simulate a robot model in 3D graphics space in Windows 95 version. 4 axes SCARA robot was adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed program. The interface between users and the off-line program system in the Windows 95'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.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.1731-1734
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• 2003

We propose a unmaned integrating control system based-on Windows XP version Off-Line Programming System which can simulate a Robot model in 3D Graphics space in this paper. The robot with 4 and 6 axes modeled SM5 and AM1 respectively were adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed off-line program. The interface between users and the off-line programming system in the Windows XP'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.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2003년도 춘계학술대회 논문집
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• pp.319-326
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• 2003

We propose a unmaned integrating control system based-on Windows XP version Off-Line Programming System which can simulate a Robot model in 3D Graphics space in this paper. The industrial robot with 4 and 6 axes modeled SM5 and AMI respectively were adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed off-line program. The interface between users and the off-line programming system in the Windows XP'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.

• 전기전자학회논문지
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• 제11권4호
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• pp.358-363
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• 2007

This paper presents a floating point unit(FPU) with 3 stages for a 3D graphics shader engine. It targeted to accelerate 3D graphics in portable device environments. In order to design a balanced architecture for a shader engine, we analyzed shader assembly instructions and estimated the performance of FPU with the method we propose. The proposed unit handles 4-dimensional data through separated two paths that are lead to general operation module and special function module. The proposed FPU is compiled as a form of the cascade FPU with 3 stages to efficiently handle a matrix operation with relatively low hardware overhead. Except some complex instructions that are executed using macro instructions, all instructions complete an operation in a single instruction cycle at 100MHz frequency. A special function module performs all operations in a single clock cycle using the Newton Raphson method with the look-up table.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 춘계학술대회논문집 - 한국공작기계학회
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• pp.188-193
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• 2000

We developed a Off-Line Graphic Simulator which can simulate a robot model in 3D graphics space in Windows 95 version. 4 axes SCARA robot was adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed program. The interface between users and the off-line program system in the Windows 95' graphic user interface i\environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, y Silicon Graphics, Inc. were utilized for 3D graphics.

• 한국공작기계학회논문집
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• 제11권3호
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• pp.21-27
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• 2002

In this paper, we have developed a Widows 98 version Off-Line Programming System which can simulate a Robot model in 3D Graphics space. The SCARA robot with four joints (FARA SM5)was adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed program. The interface between users and the OLP system in the Widows 98's GUI environment was also studied. The developing language is Microsoft Visual C++. Graphic 1ibraries, OpenGL, by silicon Graphics, Inc. were utilized for 3D Graphics.

• 한국생산제조학회지
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• 제11권3호
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• pp.21-27
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• 2002

We developed a Off-Line Graphic Simulator which can simulate a robot model in 3D graphics space in Windows 95 version. 4 ares SCARA robot was adopted as an objective model. Forward kinematics, inverse kinematics and robot dynamics modeling were included in the developed program. The interface between users and the off-line program system in the Windows 95'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.