• Title/Summary/Keyword: 비전공

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A Study of a Reliable Positioning Based on Technology Convergence of a Satellite Navigation System and a Vision System (위성항법시스템과 비전시스템 융합 기술 기반의 신뢰성있는 위치 측위에 관한 연구)

  • Park, Chi-Ho;Kwon, Soon;Lee, Chung-Hee;Jung, Woo-Young
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.10
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    • pp.20-28
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    • 2011
  • This paper proposes a reliable high-precision positioning system that converges a satellite navigation system and a vision system in order to resolve position errors and outdoor shaded areas, two disadvantages of a satellite navigation system. In kinematic point positioning, the number of available satellite navigation systems changes in accordance with a moving object's position. For location determination of the object, it should receive location data from at least four satellite navigation systems. However, in urban areas, exact location determination is difficult due to factors like high buildings, obstacles, and reflected waves. In order to deal with the above problem, a vision system was employed. First, determine an exact position value of a specific building in urban areas whose environment is poor for a satellite navigation. Then, identify such building by a vision system and its position error is corrected using such building. A moving object can identify such specific building using a vision system while moving, make location data values, and revise location calculations, thereby resulting in reliable high precision location determination.

A study on basic software education applying a step-by-step blinded programming practice (단계적 블라인드 프로그래밍 실습과정을 적용한 소프트웨어 기초교육에 관한 연구)

  • Jung, Hye-Wuk
    • Journal of Digital Convergence
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    • v.17 no.3
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    • pp.25-33
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    • 2019
  • Recently, universities have been strengthening software basic education to be active in the era of the fourth industrial revolution. Non-majored students need a variety of teaching methods because they have low knowledge of programming or a lack of connectivity with major courses. Therefore, in this paper, a learning model applying the step-by-step blind programming practice based on the Demonstration Modeling Making model was designed and applied to the actual lecture. As a result of analyzing the problem solving ability of the learner, it was confirmed that the learner's self - solving ratio increased as parking progressed. In the following study, it is necessary to analyze the learner's learning results in various aspects and to study effective teaching methods according to the difficulty of the learning contents.

Image Restoration using Stereo Images based on Feature Matching (스테레오 이미지를 이용한 특징점 매칭 기반 누락 이미지 복원)

  • Choi, Hyunji;Lee, Deokwoo
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2020.11a
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    • pp.319-321
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    • 2020
  • 스테레오 이미지는 카메라 두 대를 사용하여 찍은 미묘하게 다른 두 사진을 의미한다. 이 차이는 우리가 두 눈의 차이로 대상과의 거리를 계산하는 것처럼 이미지의 깊이를 예측할 수 있기에 요즘 주목받고 있는 자율주행 자동차나 로봇 비전에 이 기술이 사용된다. 심지어는 스마트폰 또한, 듀얼 카메라라는 이름으로 우리 일상생활에 쉽게 접할 수 있다. 이러한 상황에서 본 논문에서는 두 대의 카메라에서 찍힌 스테레오 이미지에서 손상된 한쪽의 이미지를 복원하는 기술문제에 대해 다루고자 한다.

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빅데이터 기반 패션 추천 도우미 Shoes Navigator 설계 및 구현

  • 조현우 ;장지완 ;최현선;정목동
    • Proceedings of the Korea Information Processing Society Conference
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    • 2023.11a
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    • pp.389-390
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    • 2023
  • 본 논문에서는 패션 매칭의 어려움을 해결해주기 위하여 '무신사' 쇼핑몰을 이용하여 크롤링하고 이를 정제한 dataset을 이용하여 패션 스타일의 핵심 요소 중 하나인 신발에 초점을 맞추어, 이미지 기반의 패션 매칭 시스템인 빅데이터 기반 패션 도우미, Shoes Navigator 를 제안한다. 이를 위해 컴퓨터 비전 및 딥 러닝 기술을 활용하여 이미지에서 의류 항목을 자동으로 감지하고, 스타일, 색상과 같은 패션 특성을 추출한다. 또한, 사용자의 개인적인 스타일을 고려하여 최적의 매칭을 제안하기 때문에 패션 코디 문제를 용이하게 해결할 수 있다.

Development of Automatic Visual Inspection System for Micro Needle (미세 탐침의 비전 자동 검사 시스템 개발)

  • Kang, Su-Min;Han, Kwang-Hee;Huh, Kyung-Moo
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.45 no.6
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    • pp.16-25
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    • 2008
  • The micro needle means the ultrafine probe of 'Probe Card'. The size of micro needle is so minute that it is difficult to minute that it is difficult to inspect it with eyes. On the other hand it is very critical if there is a defect in micro needle of probe card. In this study, we developed an automatic visual inspection system for finding defect status in probe angle, tip length and diameter. Through the experimental results, we could find that our proposed method is better than human-eyes inspection method in accuracy and inspection speed, and also in robustness to lighting circumstances.

Steering Gaze of a Camera in an Active Vision System: Fusion Theme of Computer Vision and Control (능동적인 비전 시스템에서 카메라의 시선 조정: 컴퓨터 비전과 제어의 융합 테마)

  • 한영모
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.41 no.4
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    • pp.39-43
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    • 2004
  • A typical theme of active vision systems is gaze-fixing of a camera. Here gaze-fixing of a camera means by steering orientation of a camera so that a given point on the object is always at the center of the image. For this we need to combine a function to analyze image data and a function to control orientation of a camera. This paper presents an algorithm for gaze-fixing of a camera where image analysis and orientation control are designed in a frame. At this time, for avoiding difficulties in implementing and aiming for real-time applications we design the algorithm to be a simple closed-form without using my information related to calibration of the camera or structure estimation.

Development of Auto Sorting System for T Type Welding nut using A Vision Inspector (비전 검사기를 활용한 T형 용접너트 자동 선별시스템 개발)

  • Song, Han-Lim;Hur, Tae-Won
    • 전자공학회논문지 IE
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    • v.48 no.1
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    • pp.16-24
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    • 2011
  • In this paper, we developed a auto sorting system for T type welding nut using a vision inspector. We used edge and thread detection with histogram of image which is captured by machine vision camera. We also used a binary morphology operation for a detection of spot. As a result we performed numeric inspection of 0.1mm accuracy. This is impossible in old sorting system and inspector with naked eye. Also, we reduced the manufacturing unit cost to 25% and improved a production efficiency to 330%.

A Study of Sensor Fusion using Radar Sensor and Vision Sensor in Moving Object Detection (레이더 센서와 비전 센서를 활용한 다중 센서 융합 기반 움직임 검지에 관한 연구)

  • Kim, Se Jin;Byun, Ki Hun;Won, In Su;Kwon, Jang Woo
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.16 no.2
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    • pp.140-152
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    • 2017
  • This Paper is for A study of sensor fusion using Radar sensor and Vision sensor in moving object detection. Radar sensor has some problems to detect object. When the sensor moves by wind or that kind of thing, it can happen to detect wrong object like building or tress. And vision sensor is very useful for all area. And it is also used so much. but there are some weakness that is influenced easily by the light of the area, shaking of the sensor device, and weather and so on. So in this paper I want to suggest to fuse these sensor to detect object. Each sensor can fill the other's weakness, so this kind of sensor fusion makes object detection much powerful.

Machine Vision based Quality Management System for Tele-operated Concrete Surface Grinding Machine (원격조종 콘크리트 표면절삭 장비를 위한 머신비전 기반 품질관리 시스템)

  • Kim, Jeonghwan;Phi, Seung Woo;Seo, Jongwon
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.33 no.4
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    • pp.1683-1691
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    • 2013
  • Concrete surface grinding is frequently used for flatness of concrete surface, concrete pavement rehabilitation, and adhesiveness in pavement construction. The procedure is, however, labor intensive and has a hazardous work condition. Also, the productivity and the quality of concrete surface grinding highly depend on the skills of worker. Thus, the development of remote controlled concrete surface grinding equipment is necessary to prevent the environmental pollution and to protect the workers from hazardous work condition. However, it is difficult to evaluate the grinded surface objectively in a remote controlled system. Also, The machine vision system developed in this study takes the images of grinded surface with the network camera for image processing. Then, by representing the quality test results to the integrated program of the remote control station, the quality control system is constructed. The machine vision algorithm means the image processing algorithm of grinded concrete surface and this paper presents the objective quality control standard of grinded concrete surface through the application of the suggested algorithm.

Visual Inspection Method Which Improves Accuracy By using Histogram Transformation (히스토그램 변환을 사용하여 정확도를 향상시킨 외관 Vision 검사 방법)

  • Han, Kwang-Hee;Huh, Kyung-Moo
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.46 no.4
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    • pp.58-63
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    • 2009
  • The appearance inspection of various electronic products and parts was executed by the eyesight of human. The appearance inspection is applied to the most electronic component of LCD Panel, flexible PCB and remote control. If the appearance of electronic products of small and minute size is inspected by the eyesight of human, we can't expect the stable inspection result because inspection result is changed by condition of physical and spirit of the checker. Therefore currently machine vision systems are used to many appearance inspection fields instead of inspection by human. The many problems of inspection by the checker are not occurred in machine vision circumstance. However, the inspection by automatic machine vision system is mainly influenced by illumination of workplace. In this paper, we propose a histogram transform method for improving accuracy of machine visual inspection.