• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.767-771
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• 2006

Recently, the User Created Contents is rising up. Gearing with an era of the Web 2.0, The pre existed Potal and private web pages are having extensive changes, and the heart of the changes is just the contents what the users produce and spread by themselves. Therefore, there is an observation about the system of contents spread on Web media until nowadays, and the features, in this article. This paper will be intend to expect that the commonness between the examples of the current User Contents, technologies for User contents, and the possibilities for development.

• The Journal of the Korea Contents Association
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• v.14 no.2
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• pp.39-47
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• 2014

Fast advancement and dynamic diffusion of Smart device make big change to personal user. They have been extended from consumer only watching video to prosumer recording and sharing User Created Video(UCV). With this reason, as a platform for various kind of content service. Especially, UCVs for the purpose of sharing experience are recorded from same event on limited time and space by some people. These are also produced by various cameras that has each angle similar like broadcasting videos. In this paper, we present multi-view characteristic of UCV and propose Multi-view UCV service that is watching UCVs from same event through adjusting camera angle. Through user satisfaction survey, we knew that adjusting camera angle is preferred for watching UCV including overlapping part more than linear watching.

• Journal of Korea Multimedia Society
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• v.23 no.1
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• pp.74-84
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• 2020

In November 2018, virtual pop band K/DA, with the use of holograms and actual K-pop girl group members, performed its debut album titled "POP/STARS" at the opening ceremony of the League of Legends S8 final, hosted by Riot Games. The fan culture that exists for real singers adapts itself to virtual bands, and K/DA, consisting of virtual characters, encouraging the production of user created content (UCC). However, this form of UCC is different from the most common one, meaning that this type of band generates another way of consuming content. Therefore, this study examines how K/DA's digital characters are transformed and reproduced by UCC and how the original producers' content differs from them. Firstly, the development of this study considers the open characteristics of UCC, such as user type, created motivation, created process, content type and sharing method. In the second part, the virtual idol Hatsune Miku and virtual band Pentakill will be analysed to understand UCC. Thirdly, K/DA will be analyzed as a case study based on three factors: created motivation, content type and sharing method. In this manner, this study aims to explain how UCC for virtual bands reproduce and consume original content and expand their commercial value.

• Journal of Korea Multimedia Society
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• v.14 no.8
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• pp.1020-1028
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• 2011

In this paper, we proposed a mechanism that prevents indiscreet use of digital contents, verifies created content's copyrights to provide services to granted user and protects digital contents by law by authenticating the original digital content whenever an infringement of copyright occurs in UCC environments. The proposed mechanism uses specific information and features of contents as copyrights authentication information without additional information. Also, provides the fact of violation by inferring the modification of the original digital contents. That means this mechanism infers same or similar value from the contents; fraudulent use of content, modification of content color, modification of content format, modification of content resolution and illegal use of frame not principal key frame. In that point, we found that the inferred value from the content differed according to features of content modification.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.112-122
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• 2011

In this paper, we adopt a concept of UCM(User Created Market) to develop STOWAR system which is user can use their smart phone at anytime, anywhere to directly forming a market at virtual space and other's also can access to this market trade with other users. This system is optimized for effectiveness of information alert and ease way to access information by selective event notification feature which can expected with activation of service.

• Journal of Digital Contents Society
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• v.8 no.3
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• pp.289-300
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• 2007

Recently, the number of People who want to study by online has been gradually increased. In addition, people's desire is increasing that represents their special knowledge and personality with new paradigm of UCC(User Created Contents). Most of the educational web-sites offer currently boring and unified educational contents without interesting objects. Therefore I want to solve these problems of existing online educational web-sites and I strongly propose the method of design to make the place educational and useful that everyone can enjoy and manifest the user's dispositions. On this study, it's possible to make pleasant environment and improve educational effects on cyber space by designing it in accordance with the individual tastes which have various design elements, beauties and facilities by the customized design method. As a result, this study proposes the model of online educational web-site having various interfaces and focusing on the customized design.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.01a
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• pp.267-272
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• 2009

Video digests provide an effective way of confirming a video content rapidly due to their very compact form. By watching a digest, users can easily check whether a specific content is worth seeing in full. The impression created by the digest greatly influences the user's choice in selecting video contents. We propose a novel method of automatic digest creation that evokes a joyful impression through the created digest by exploiting smile/laughter facial expressions as emotional cues of joy from video. We assume that a digest presenting smiling/laughing faces appeals to the user since he/she is assured that the smile/laughter expression is caused by joyful events inside the video. For detecting smile/laughter faces we have developed a neural network based method for classifying facial expressions. Video segmentation is performed by automatic shot detection. For creating joyful digests, appropriate shots are automatically selected by shot ranking based on the smile/laughter detection result. We report the results of user trials conducted for assessing the visual impression with automatically created 'joyful' digests produced by our system. The results show that users tend to prefer emotional digests containing laughter faces. This result suggests that the attractiveness of automatically created video digests can be improved by extracting emotional cues of the contents through automatic facial expression analysis as proposed in this paper.

• Journal of KIISE:Computing Practices and Letters
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• v.13 no.5
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• pp.320-332
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• 2007

Recently, new interests on digital contents and UCC(User Created Content)s are growing fast through the development of internet. However, there have been many side-effects on those interests. The representative problems are perversing illegal copies and the distributions for personal valuable digital contents to unauthorized anonymous users. These decrease creation of good digital contents by interfering with the growth of information technology industry and the content provider#s creative will. To resolve these problems, in the paper, we propose a novel auction system for multimedia contents and bidding processes. The system applies the concept of used goods onto digital contents. Especially, the auction system is based on mobile environment. Finally, the performance evaluation shows that those main auction process algorithms indicate the time complexity of logarithm scale for insertions and searches. Therefore, the performance of the system is not significantly influenced by the amount of contents even though the volume of contents in the system is increasing.

• Journal of Korea Game Society
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• v.17 no.6
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• pp.63-76
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• 2017

This study presents the analysis results through the experiments how to increase the user participation via the user created game contents(UCGC) which user oneself can produce in a game. The experiment was carried out for whether the three elements of self-express desire, providing game money, and competitiveness can increase active participation in UCGC by using a mobile game called 'Color Pop'. Through this, we summarized the comparative results of the importance and influence for the three elements. It is expected that it will be used to improve understanding of UCGC users and plan or produce UCGC.

• Journal of the Korea Society of Computer and Information
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• v.13 no.2
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• pp.127-134
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• 2008

Recently, it has developed that UCC (User Created Contents) is made and created by the users. The mainly issue of production of contents parts is how can make easier and paly the moving picture more useful. In this paper, for this, we implemented UCC production system using Direct Show which is included Direct X. Direct Show is a moving picture editing technique and has been supported in Microsoft with COM component. Our system has features that the various effects can be easily inserted into moving Picture by users. Moreover, our system can efficiently apply the effects at playing the moving picture differently from the frame processing method. We confirmed these merits through experiments. The proposed system can be used for commercial purposes which high efficiency is required such as advertisement movie.