• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2003.10a
• /
• pp.264-267
• /
• 2003

The stereoscopic vision robot system design with DSP processor is presented. The vision system is consists of control system, vision system and host computer. The vision system is based on 32bits DSP processor. The stereoscopic image processing applies the correlation coefficient method to execute the software. The result of experiment, image recognition rate is 95% on the stereoscopic vision robot system.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.26 no.9B
• /
• pp.1267-1276
• /
• 2001

본 논문은 스테레오 시차정보를 이용하여 스테레오 비젼 시스템에서 표적물체의 영역 및 위치를 구하고, 표적물체를 제외한 배경을 분리함으로써 표적물체 영역을 효과적으로 추출할 수 있는 새로운 알고리즘을 제시하였다. 즉, 제안한 알고리즘은 스테레오 비젼 시스템에서 얻어지는 양안시차 정보와 각 픽셀의 유사도를 이용하여 1차적으로 배경을 분리한 후 그 결과에 히스토그램을 적용하여 최종적으로 표적물체 영역을 추출하였다. 실험 결과 제안한 알고리즘은 스테레오 입력 영상에서 배경잡음과 관계없이 표적 물체영역을 추출할 수 있었고, 이의 구현으로 스테레오 원격작업 시스템이나 적응적인 스테레오 물체 추적기 등의 구현 가능성을 제시하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.1
• /
• pp.504-507
• /
• 2005

In this paper, we propose a calibration technique of 3D coordinates using orthogonal stereo vision. First, we acquire front- image and upper- image from stereo cameras with real time and extract each coordinates of a moving object using differential operation and ART2 clustering algorithm. Then, we can generate 3D coordinates of that moving object through combining these two coordinates. Finally, we calibrate 3D coordinates using orthogonal stereo vision since 3D coordinates are not accurate due to perspective. Experimental results show that accurate 3D coordinates of a moving object can be generated by the proposed calibration technique.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.23 no.10
• /
• pp.134-142
• /
• 2009

In this paper, we proposed the right-angle stereo vision system to measure the object size using a human eyesight-like, and the system is reconstructed with conventional stereo vision system. In this proposed system, the size results of objects are measured very close to the real object size, and we got the ratios 93~103[%] for the real object sizes. Therefore, the suggested right-angle stereo vision system have a high possibilities to be applied to many industrial system parts and to be used for robot system, automatic system, and etc.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.10
• /
• pp.5130-5133
• /
• 2013

Volumetric display has many applications recently in education, 3D movie, medical images but these applications have several problems that need to be overcome. Volumetric display may process a amount of visual data and design the high efficient vision system for realtime display. The stereo data for volumetric display estimated the disparity vectors from the stereoscopic sequences has been transmitted the disparity vectors, motion vectors and residual images with the reference images, and the stereoscopic sequences have been reconstructed at the receiver for 3D display. Central issue for efficient 3D display lies in selecting an appropriate stereo matching with robust vision system. In this paper, high efficient vision system is proposed for efficient stereo image matching and the experimental results represent high efficiency for proposed 3D display system.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2001.04a
• /
• pp.170-173
• /
• 2001

To apply stereo vision system to obstacle recognition system of AGV, we constructed algorithm of stereo matching and distance measuring with stereo image for positioning of object in area. And using this system, we look into the error between real position and measured position, and studied relationship of compensation.

• Journal of the Korean Institute of Telematics and Electronics D
• /
• v.35D no.12
• /
• pp.99-107
• /
• 1998

A stereo vision system such as the structure of human's eyes has two cameras at separated positions from which we can obtain two input images and then put them together to create 3-D image. It can show more virtual effect than the conventional 2-D image system. But, the stereo image system has to control the convergence angle so that the stereo disparity could always be zero because observers can be fatigued and unconscious of stereo image in conditions that the stereo disparity is not zero for a long work. Therefore, in the paper, optical JTC system which can process adaptive tracking of a specific moving object is proposed as a new approach to keep the stereo disparity to be zero. In this method, optical JTC system obtains the values of the relative locations of a moving objects in left and right images and then these values are used for maintaining the stereo disparity to be zero. Through some optical experiments the proposed stereo vision system is proved to be insensitive to background noises and operate in real-time.

• Proceedings of the IEEK Conference
• /
• 1998.10a
• /
• pp.973-976
• /
• 1998

스테레오 물체추적 시스템은 스테레오 비젼 시스템의 입체 영상에서 나타나는 스테레오 시차를 없애 주는 주시각 제어와 이동 물체를 영상의 중앙에 위치시키기 위한 팬/틸트 제어를 통해 이동 물체를 추적하게 된다. 본 논문에서는 스테레오 물체추적 시스템의 새로운 접근방법으로 적응적 물체 추적이 가능한 광 JTC를 이용해 이동 물체를 추적하는 스테레오 물체추적 시뮬레이터를 구현하였다. 이를 이용하여 여러 종류의 입력 영상에 따른 광 JTC 의 추적 결과를 분석하여 실험 결과를 예측할 수 있었으며, 이를 광학적으로 구현할 경우 배경 잡음에 강하고 실 시간적 물체 추적이 가능한 스테레오 물체추적 시스템을 구현할 수 있음을 제시하였다.

• Journal of Broadcast Engineering
• /
• v.7 no.3
• /
• pp.248-261
• /
• 2002

In this paper, we proposed a new 3-dimensional(3-D) object-tracking algorithm that can control a stereo camera using a variable window mask supported by which uses ,B-D information and an optical BPEJTC. Hence, three-dimensional information characteristics of a stereo vision system, distance information from the stereo camera to the tracking object. can be easily acquired through the elements of a stereo vision system. and with this information, we can extract an area of the tracking object by varying window masks. This extractive area of the tracking object is used as the next updated reference image. furthermore, by carrying out an optical BPEJTC between a reference image and a stereo input image the coordinates of the tracking objects location can be acquired, and with this value a 3-D object tracking can be accomplished through manipulation of the convergence angie and a pan/tilt of a stereo camera. From the experimental results, the proposed algorithm was found to be able to the execute 3-D object tracking by extracting the area of the target object from an input image that is independent of the background noise in the stereo input image. Moreover a possible implementation of a 3-D tele-working or an adaptive 3-D object tracker, using the proposed algorithm is suggested.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1997.10a
• /
• pp.224-228
• /
• 1997

Computer vision system become more important as the researches on inspection systems, intelligent robots , diagnostic medical systems is performed actively. In this paper, 3D measuring system is developed by using stereo vision. The relation between left image and right image is obtained by using 8 point algorithm, and fundamental matrix, epipole and 3D reconstruction algorithm are used to measure 3D dimensions. 3D measuring system was developed by Visual Basic, in which 3D coordinates would be obtained by simple mouse clicks. This software would be applied to construction area, home interior system, rapid measuring system.