• Title/Summary/Keyword: video material

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Wearable Computer Based Video Communication System Using Augmented Reality (증강 현실을 이용한 웨어러블 컴퓨터 기반의 비디오 통신 시스템)

  • Kim JongBae;Ahn Kyoungkwan
    • Proceedings of the Korea Information Processing Society Conference
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    • 2004.11a
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    • pp.245-248
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    • 2004
  • 일반적으로 비디오 통신 시스템은 두 전화 통신자의 영상을 각 사용자의 통신 장비에 부착된 스크린에 출력함으로써 음성과 더불어 통신을 이룰 수 있게 하는 시스템이다. 하지만. 현재까지 비디오통신 시스템은 정적인 상황하에 통신이 이루어짐에 의해 통신 사용자의 움직임에 많은 제약을 가져온다. 그러나, 사용자가 주시하는 실세계의 배경에 상대방 사용자의 영상을 부가하여 보여주는 증강현실(Augmented Reality) 기술은 현실감 증대에 많은 도움을 줄 수 있으며, 최근 많은 관심이 되고 있는데, 이 기술은 비디오 통신 시스템에 이용함으로써 기존의 시스템의 제약을 해결 할 수 있다. 따라서, 본 논문은 비디오 통신 시스템에 정적인 환경하에 영상을 전송 받아 통신하는 기존의 시스템을 개선하여 사용자가 움직이면서 주시하는 실세계를 배경으로 상대 통신자의 영상을 중첩하여 보여주는 증강현실 기술을 이용한 비디오 통신 시스템을 제안한다. 이처럼 통신 사용자의 활동성을 보장하면서 비디오 통신을 이루기 위해 웨어러블 컴퓨터를 이용하여 비디오 통신 시스템의 구현하였다. 또한, 제안한 시스템은 비디오 통신뿐만 아니라 다양한 시스템에서 활용될 수 있음을 알 수 있다.

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Liquid mist and videotape signal dropouts in gravure roll coating (Gravure롤 코팅방식에서 비산도료에 의한 비디오 신호의 dropouts)

  • 김명룡
    • Electrical & Electronic Materials
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    • v.8 no.5
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    • pp.633-639
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    • 1995
  • Dropouts in magnetic media are a primary quality deficiency which is detrimental to magnetic signal quality and thus the major impediment to error-free recording, especially in high density digital recorders. The specific form of defects and causes found to be responsible for signal dropouts occurring in magnetic tape were studied. Dropout occurred when the RF signal falls to low level due to the various types of surface defects. However, the fall in the level of the RF signal in gravure roll coated tapes was most often caused by foreign particles adhering to the magnetic tape. It was also shown from the present study that scattered particles trapped under the tape surface or put on the top can lift it as it crosses the head, creating a spherical tent shaped defect and causing a temporary signal drop. Dropout producing substances were identified through optical and microchemical analyses. The results were correlated with measured electrical signal losses combined with analytical microscopy to clarify source identification of defects.

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Korean and Japanese EFL Learners' AV Benefit for the Perception of the Liquid Contrast in English (한국인 및 일본인 영어학습자의 유음 차이 지각에 미치는 시각/청각 효과)

  • Chung, Hyun-Song
    • MALSORI
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    • no.60
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    • pp.1-11
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    • 2006
  • This paper investigated AV benefit of Korean and Japanese EFL learners' perception of the liquid contrast in English. In a perception experiment, the two English consonants /l/ and /r/ were embedded in initial and medial position in nonsense words in the context of the vowels /i, a, u/. Singletons and clusters were included in the speech material. Audio and video recordings were made using a total of 108 items. The items were presented to Korean and Japanese learners of English in three conditions: audio-alone (A), visual-alone (V) and audio-visual presentation (AV). The results showed that there was no evidence of AV benefit for the perception of the /l/-/r/ contrast for either Korean or Japanese learners of English. The results suggest that increasing auditory proficiency in identifying a non-native contrast is linked with an increasing proficiency in using visual cues to the contrast.

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Architecture_Speaking in Colors

  • Kim, Tae-Eun
    • International journal of advanced smart convergence
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    • v.8 no.3
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    • pp.167-176
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    • 2019
  • Building skins are expanding even beyond theirfunctions as a simple boundary between the exterior and interior and into the realm of linguistic functions thanks to the development of media art. LED has been used as material on outer walls following the advancement of building materials, so the outerskins of large buildings are evolving into a messenger of language capable of communication. In big cities, buildings send out video images to enable communication between people and architecture, which plays a huge role in determining the identity of a building beyond simple advertising. Such media fa?ade technologies can be understood based on the concept of outerskin change, which refers to the idea that animals change the colors or textures of their skins to show their various states. In addition, various message delivery functions in human clothes should be included in such a discussion. We need to research on the possibilities of seeing media facades for their information delivery function and expanding them into information delivery between buildings as well as just between buildings and people.

Multimedia Technologies As A Basis For The Development Of Modern It Education In Ukraine

  • Seiko, Nataliia;Yershov, Mykola-Oleg;Sakhnenko, Anna;Shevchenko, Marina;Bezsmertnyi, Roman;Kostyrya, Inna
    • International Journal of Computer Science & Network Security
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    • v.21 no.11
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    • pp.363-367
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    • 2021
  • This article analyzes the state and development of multimedia technologies in the educational process. The reasons for the emergence of multimedia educational technologies are shown. The definition of the concept of "multimedia education" is given. The advantages and disadvantages of teaching using multimedia technologies are presented. The article, based on multimedia technologies, provides one of the ways to solve the problem of lack of classroom time for the presentation of all educational material in the process of teaching engineering students. The creation and application of educational videos in education is discussed, an example of teaching electrical engineering is given; the requirements for the development of video lessons, their advantages and importance in the educational process are indicated.

Post Production in a Multi-format Environment

  • Pank, R. A.
    • Broadcasting and Media Magazine
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    • v.4 no.4
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    • pp.46-51
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    • 1999
  • The introduction of broadcast digital television (DTV) was, at one time, seen as an opportunity to rationalise video formats. The reality is quite different with a rapid divergence as the united States' ATSC offers 18 formats to cover both standard definition (SD) and high definition (HD), and yet more are supported by Europe's DVB. At the same time multi-media is expanding both as an area for source material and for finished work. Post production needs to move away from single-format facilities as requirements for multi-format operation is already increasing. A 'format-independent' solution is described which allows efficient operation with any mix of input formats and able to output any format with high quality. Attention is given to retaining the speed, accuracy and immediacy which is a feature of today's professional facilities -even while handling the greater demands of HD. Another route, using 24 frames-per-second is also examined.

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A Study on Development of Energy Education Materials for Middle School Students (중학교용 에너지 교육 자료 개발 연구)

  • 최돈형;이양락
    • Hwankyungkyoyuk
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    • v.7 no.1
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    • pp.46-87
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    • 1994
  • Our country has been consuming a huge amount of energy in the course of industrialization and its demand is expected to increase enormously in the future. However, the deposits of energy resources are so limited that the settlement of energy problem comes up the essential subject. To solve the energy problem, it is requested that new resources to gain energy stably should be developed and also energy should be economized and used effectively. The effective use of energy and an the wisdom of economy in energy are requested to everybody and these things should be habitualized from very young age through education. Nevertheless, almost every school in our country hasn’t been concerned about energy education. Even though they have a concern, they are very short of the energy education materials and the quality of the materials is not so good. Therefore it is very meaningful to the settlement of energy problem of the country to make the students who will lead our country to make the students who will lead our country in the future realize the seriousness of energy problem and to provide them the necessary knowledge and methods to solve this problem so that they practice those things in everyday life. Having these necessities, this research, supported by The Korea Energy Management Corporation(KEMCO), was performed for 8 months from April 17, 1994 to December 17, 1994. Many peoples participated in this study such as 30 staffs of researchers and authors, 5 staffs of photographers and illustrators, and 3 VCR program producers developing an energy education material set for middle school students that includes a printed material for student, a diskette for computer simulation, a teacher's guidebook, VCR material and its guidebook. The following main development direction was established : First, the material for student should be consisted of units that let students know the seriousness of energy problem. Second, the focus should be put on the necessary method and practice to economize energy actually in real life based on the basic knowledge learned in elementary school. Third, material for student should be consisted of modules to be student activity-oriented teaching-learning rather than lecture-oriented one. The activity, to maximize student's interests, should be presented in various forms such as experiments, investigation, play, data interpretation, computer simulation, visits, expression and appreciation, etc. To develop the energy education materials for middle school students, a research plan was made first. After literature review about domestic and foreign energy education materials, several research trips home and abroad, and discussion meetings, the basic theory of energy education such as the principle, objective, contents, teaching-learning method, and evaluation method was established. Material for student was developed through the following procedures : The activities in the existing energy education materials were analysed and were divided into four categories related to energy using places of home, school, community, and country, and which were again divided into three categories related to time of past, present, and future, Considering these division, nine modules which are structure units of material for student were chosen, Each module comprises 2-4 activities. Totally 31 activities were designed in this way. The syllabi were made out for each activity and writing was asked for to experts related to each activity after several discussions and revision. To complement the draft, another several discussions and revision were also made on it and then pictures and illustrations were asked for. All these procedures complete the material for student, titled ; Energy Inquiry of Middle School Students', which totals 129 pages and is all in color. As the manuscript of material for student was fixed, writing for teacher's guidebook was asked for to the same writers. The draft of teacher's guidebook was also complemented through the several concentrated works and discussions. Teacher's guidebook focused on the teaching-learning principle and methods of energy education and on the concrete instruction cases for effective instruction of material for student. It is organized with two parts : the one is 'general outline' which introduces theoretical contents and the other is 'details' which are practically helpful to teaching-learning. It is totally 131 pages including both 'general outline' and 'details'. The VCR material and its guidebook consist of contents that cultivate the good attitude trying to economize energy and raise student's interests with a purpose of strong motivation to recognize the necessity of economy and practice it. After establishing development direction of VCR material through discussion meetings and research trips, its script was made by relevant experts. Then the script was also reviewed two times. The drafted VCR material made by a video material developing expert was examined and modified by previews twice. After completion of VCR material, the VCR guidebook was made. All these procedures led to the development of VCR material which runs 20 minutes in VHS type. The VCR guidebook shows a production purpose of the program, structure of contents, evaluation methods, and contents of the program in detail to give help to instructors when they use this VCR material, When these energy education materials are used, it is desirable that the VCR material should be presented first to induce student's motive, and then material for student is introduced Since the material for student is composed of activity-oriented modules and each module is independent one another in general, and each activity is, too. the necessary module or activity can be chosen and utilized in any order according to school or class conditions. This energy education materials will contribute to the development of student's ability to solve energy problem in everyday life and teacher's ability to teach the fundamental knowledge and method in solving energy problem.

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Characteristics of a hero in the story the powered suit contents (영웅 서사 속의 강화복 콘텐츠 특성)

  • Sohn, Jong-Nam;Lee, Chang-Jo
    • Journal of Digital Convergence
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    • v.11 no.8
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    • pp.315-320
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    • 2013
  • The content of emerging hero is a material of many roles in the development of video content. In recent years, the hero story taking advantage of the powered suit are appearing, and the popularity is also high. The powered suit was first advocated by Robert Anson Heinlein called science fiction writer, and he contributed to creation of diverse and numerous powered suit content. In particular, the powered suit content combined with epic heroes has become popular with many crush to audiences. In this study, what is the powered suit content and analyzed characteristics within the content of the powered suit by content analysis of utilizing the powered suit materials. It is thought that the powered suit content is gaining popularity to a large audience because it focused on realistic, scientific storyline than a traditional hero narrative.

Development and Application of the Family Activity for Improving Scientific Creativity (FAISC) Program (과학적 창의성 향상을 위한 가족활동(FAISC) 프로그램의 개발과 적용)

  • Jee, Kyoungjun;Park, Jongwon
    • Journal of The Korean Association For Science Education
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    • v.33 no.1
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    • pp.114-131
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    • 2013
  • In this study, FAISC (Family Activity for Improving Scientific Creativity) program was developed and applied to 12 families. FAISC consists of 12 tasks and 12 evaluation papers. Family participants conducted the task individually and evaluated their performance results through discussion and agreement. From the participants' responses, it was found that FAISC tasks were fun but weakly difficult. Participants responded that Guide 1 (Creative thinking methods) and Guide 2 (Related knowledge) were helpful in their performance, and their scientific creativity was enhanced. From the analysis of interview and video recording of participants' behaviors, various positive aspects were observed. Especially on cognitive aspects, harmonious and pleasant family activities were observed. Negative aspects observed in interview and video gave us a practical guide for more effective performance in further application. Finally, according to comparison of evaluation results by family and professionals, the correlation between them was .901. Therefore, we conclude that evaluation of creative activity by family is highly confidential.

Smoke Detection Using the Ratio of Variation Rate of Subband Energy in Wavelet Transform Domain (웨이블릿 변환 영역에서 부대역 에너지 변화율의 비를 이용한 연기 감지)

  • Kim, JungHan;Bae, Sung-Ho
    • Journal of Korea Multimedia Society
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    • v.17 no.3
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    • pp.287-293
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    • 2014
  • Early fire detection is very important to avoid loss of lives and material damage. The conventional smoke detector sensors have difficulties in detecting smoke in large outdoor areas. The video-based smoke detection can overcome these drawbacks. This paper proposes a new smoke detection method in video sequences. It uses the ratio of variation rate of subband energy in the wavelet transform domain. In order to reduce the false alarm, candidate smoke blocks are detected by using motion, decrease of chromaticity and the average intensity of block in the YUV color space. Finally, it decides whether the candidate smoke blocks are smokes or not by using their temporal changes of subband energies in the wavelet transform domain. Experimental results show that the proposed method noticeably increases the accuracy of smoke detection and reduces false alarm compared with the conventional smoke detection methods using wavelets.