• Korean Journal of Remote Sensing
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• v.35 no.3
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• pp.359-373
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• 2019

Bursaphelenchus xylophilus(Pine wilt disease) is a serious threat to the pine forest in Korea. However, dead wood observation by Pine wilt disease is based on field survey. Therefore, it is difficult to observe large-scale forests due to physical and economic problems. In this paper, high resolution images were obtained using the unmanned aerial vehicle (UAV) in the area where the pine wilt disease recurred. The damaged tree due to pine wilt disease was detected using Artificial Neural Network (ANN), Support Vector Machine (SVM) supervision classification technique. Also, the accuracy of supervised classification results was calculated. After conducting supervised classification on accessible forests, the reliability of the accuracy was verified by comparing the results of field surveys.

• Korean Journal of Remote Sensing
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• v.20 no.4
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• pp.261-274
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• 2004

The feature extraction using remotely sensed imagery has been recognized one of the important tasks in remote sensing applications. As the high-resolution imagery are widely used to the engineering purposes, need of more accurate feature information also is increasing. Especially, in case of the automatic extraction of linear feature such as road using mid or low-resolution imagery, several techniques was developed and applied in the mean time. But quantitatively comparative analysis of techniques and case studies for high-resolution imagery is rare. In this study, we implemented a computer program to perform and compare GDPA (Gradient Direction Profile Analysis) algorithm and Hough transformation. Also the results of applying two techniques to some images were compared with road centerline layers and boundary layers of digital map and presented. For quantitative comparison, the ranking method using commission error and omission error was used. As results, Hough transform had high accuracy over 20% on the average. As for execution speed, GDPA shows main advantage over Hough transform. But the accuracy was not remarkable difference between GDPA and Hough transform, when the noise removal was app]ied to the result of GDPA. In conclusion, it is expected that GDPA have more advantage than Hough transform in the application side.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.69-75
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• 2022

The purpose of this study is to present the direction of the development and utilization of remote class content for infants in a future educational environment through the analysis of remote class content for childhood. The analysis targets are 148 kindergarten [play ON] contents, and the analysis results according to "easy to use," "interest," "educational," "conformity of content," and "technicality" are as follows. Except for the 'conformity of content', there was a large variation in the score of content for each sub-area. In the case of "conformity of content," almost all of them received high scores for content production by incumbent teachers. With this in mind, we have drawn the following conclusions: First, it should be produced at an appropriate speed in consideration of the induction and understanding of childhoods' participation in play in the search and progress process, and it should be possible to play according to the challenges and levels using various strategies under the theme that all childhoods can be interested in. In addition, it was found that it was necessary to select topics, edit videos, and voice support so that childhoods can participate in the process of discovery and search, supporting childhoods' imagination, curiosity, and creative experiences.

• Annual Conference of KIPS
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• 2000.04a
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• pp.916-921
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• 2000

인터넷이 보편화되고, 멀티미디어 처리기술과 정보통신 기술이 발전함에 따라 인터넷을 이용한 원격교육기술이 연구되고 있다. 강의를 저작하고 재생하는 원격 강의 도구들이 개발되고 있지만, 제한된 형태의 학습자료만 사용하고 음성 및 드로잉에만 의존하는 형태를 벗어나지 못해 면대면 효과가 매우 좋지 않은 강의의 저작이 이루어지고 있다. 따라서 다양한 형태의 멀티미디어 학습자료를 사용할 수 있으며, 교수자의 강의노하우를 반영시킬 수 있는 원격 강의저작 도구의 개발이 필요하다. 본 연구에서는 교수자의 강의를 학습자에게 최대한 전달하면서 면대면 효과를 극대화할 수 있는 멀티미디어 컴포넌트 기반 원격강의도구를 설계하고 구현한다. 제안하는 도구는 디지털 카메라 영상을 포함한 다양한 멀티미디어 자료를 사용하며, 드로잉과 포인팅을 이용하여 실감나는 강의를 쉽게 저작할 수 있으며, 강력한 압축기능으로 인터넷을 통하여 빠르게 강의를 전달할 수 있다.

• Journal of the Korea Computer Industry Society
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• v.3 no.3
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• pp.283-294
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• 2002

Now is the time for web-based video e-mail system because of world wide use of internet. But video data is so large, then data compression is much needed for transmission by web. In this paper, my colleagues and I implement full motion video e-mail system using MPEG-4, the international standards for audio-visual data. This video e-mail system is made of web-based active-X control, so easily accessible by web, and applies real-time audio-video compression. It's possible for everyone to send video e-mail for free to everywhere in the world if this system is used. The main application areas of this system are multimedia mailing service, web-based video advertisement, remote education, remote medical service and shopping mall construction, etc.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.11b
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• pp.59-64
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• 2002

인터넷 방송은 인터넷의 인프라와 관련 기술의 급속한 발전. 아날로그 컨텐츠의 디지털화와 디지털 컨텐츠의 확보와 제작을 통해 확고한 자기 위치를 구축하고 있다. 현재 초 · 중등 학교 및 대학에서 인터넷방송국 구축 및 매체제작관련 시설이 산발적으로 이루어지고 있으나 대부분 원격 교육을 위한 인터넷 방송 시스템이지만, 향후 독립 인터넷방송국의 증대 및 활성화가 기대된다. 따라서 본 논문의 주제는 다양한 동영상 컨텐츠를 이용한 다 채널방송 및 독립인터넷방송국에 직접 적용할 수 있는 실질적인 인터넷 방송 시스템의 설계와 그 원형 구축에 관한 연구이다.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.05c
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• pp.49-53
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• 2002

본 논문은 광학 현미경으로 관찰된 데이터들을 분산 시스템이나 병렬 시스템에 구현한 소프트웨어 시스템의 설계에 대한 것으로, 이 시스템이 처리하는 데이터들이 대용량이라는 특성과 함께 다중 해상도의 특성을 갖는다. 본 시스템은 고객/서버 모델을 기반으로 하였으며, 대용량 데이터 처리시 성능에 중요한 디스크 입출력의 대역폭을 높이기 위해 힐버트 곡선 기반의 분산 알고리즘을 적용하였다. 서버부는 조정자 노드와 서비스 노드로 구성되며, 시스템의 제 구성 요소들간에는 정해진 통신 규약에 따라 메시지를 주고 받고, 상호 독립적이다. 이 시스템은 의학 교육, 원격 병리, 가상 학술 회의 등에 응용될 때 활용 가치가 높을 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.7
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• pp.1633-1638
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• 2013

The mobile phone has now evolved into an effective multimedia devices to watch video content with your PC in addition to the calling features. Thus, the effectiveness of the video content streaming services smartphone will be available. And content should be able to deliver effectively. Be provided with textbook images and video of the speaker means that the effective content delivery. In this paper, we propose a integrated video management system that can be real-time VOD services on the Internet as input Multi-Source of audio-video, video content encoding system to meet the requirements of the above two.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.830-832
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• 2013

The mobile phone has now evolved into an effective multimedia devices to watch video content with your PC in addition to the calling features. Thus, the effectiveness of the video content streaming services smartphone will be available. And content should be able to deliver effectively. Be provided with textbook images and video of the speaker means that the effective content delivery. In this paper, we propose a integrated video management system that can be real-time VOD services on the Internet as input Multi-Source of audio-video, video content encoding system to meet the requirements of the above two.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.718-720
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• 2002

현재 교사를 위한 다양한 인격 연수가 시행되고 있다. 그러나 연수 내용을 살펴보면 교사 연수의 핵심이라고 할 수 있는 교수법 향상에 관련된 내용보다는 교과의 전문지식이나 기능적인 부분에 대해 더 많이 다루고 있는 것이 사실이다. 교사들은 대학에서 뿐만 아니라 교육 현장에서 자기 연수 혹은 연수 기관을 통해 끊임없이 교수법 향상을 위해 노력해야한다 연수 기관에서 그룹별 토의 시스템, 동영상 동기화 교수-학습 지도안 제작 도구, 교수학습 DB 등으로 구성된 인지적 도제 모델형 원격 연수 시스템을 이용한다면 좀 더 나은 교수법 향상을 기대할 수 있을 것이다.