• Title, Summary, Keyword: 미디어프레임

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Characteristics of the Media Acting (매체연기 특성 연구)

  • Park, Ho-Young;Min, Kyung-Won
    • The Journal of the Korea Contents Association
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    • v.11 no.8
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    • pp.159-169
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    • 2011
  • Due to media's characteristics, the methods of acting expression in stage differ from that in media. However, actors playing in either genre use the same internalization as the basis of their performance. The acting arising from actors' internalization is the same in stage acting and media acting. Nevertheless, media acting, by its genre characteristics, requires a more delicate and natural acting than that in stage acting. Such is because media acting shows a far more detailed and amplified performance that is shown on screen. The purpose of this research is to examine how to differentiate the expression characteristics of media acting from the expression methods of stage acting. Through this research, I attempt to present the expression methods of media acting that can show real life acting reflecting media's distinct characteristics, with the aim of benefiting students who practice media acting or professional actors. Diverse expression methods presented by training of media acting are expected to enable actors engaged in this field to produce excellent outcomes through acting training to successfully bring out a realistic and convincing performance through internalization. And together with the opportunity to build delicate and detailed acting styles that are required in media acting, acting styles that are differentiated from those in stage acting will also be discussed.

Accelerated compression of sub-images by use of effective motion estimation and difference image methods in integral imaging (집적영상에서 효율적인 물체움직임 추정 및 차 영상 기법을 이용한 서브영상의 고속 압축)

  • Lee, Hyoung-Woo;Kim, Eun-Soo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.12
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    • pp.2762-2770
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    • 2012
  • In this paper, we propose a novel approach to effectively compress the sub-images transformed from the picked-up elemental images in integral imaging, in which motion vectors of the object in each sub-image are fast and accurately estimated and compensated by combined use of MSE(mean square error)-based TSS(tree-step search) and FS(full search) schemes. This is, the possible object areas in each sub-image are searched by using the fast TSS algorithm in advance, then the these selected object areas are fully searched with the accurate FS algorithm. Furthermore, the sub-images in which all object's motion vectors are compensated, are transformed into the residual images by using the difference image method and finally compressed with the MPEG-4 algorithm. Experimental results reveal that the proposed method shows 214% improvement in the compression time per each image frame compared to that of the conventional method while keeping the same compression ratio with the conventional method. These successful results confirm the feasibility of the proposed method in the practical application.

An Optimal Adaptation Framework for Transmission of Multiple Visual Objects (다중 시각 객체 전송을 위한 최적화 적응 프래임워크)

  • Lim, Jeong-Yeon;Kim, Mun-Churl
    • Journal of KIISE:Software and Applications
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    • v.35 no.4
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    • pp.207-218
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    • 2008
  • With the growth of the Internet, multimedia streaming becomes an important means to deliver video contents over the Internet and the amount of the streaming multimedia contents is also getting increased. However, it becomes difficult to guarantee the quality of service in real-time over the IP network environment with instantaneously varying bandwidth. In this paper, we propose an optimal adaptation framework for streaming contents over the Internet in the sense that the perceptual quality of the multi-angie content with multiple visual objects is maximized given the constraints such as available bandwidth and transcoding cost. In the multi-angle video service framework, the user can select his/her preferred alternate views among the given multiple video streams captured at different view angles for a same event. This enhanced experience often entails streaming problems in real-time over the network, such as instantaneous bandwidth changes in the Internet. In order to cope with this problem, we assume that multi-angle video contents are encoded at different bitrates and the appropriate video streams are then selected or transcoded for delivery to meet such bandwidth constraints. For the user selective consumption of the various bitstreams in the multi-angle video service, the bitstream in each angle can be encoded in various bitrate, and the user can select a sub-bitrstream in the given bitrstreams or transcode the corresponding content in order to deliver the optimally adapted video contents to the instantaneously changing network condition. Therefore, we define the transcoding cost which means the time taken for transcoding the video stream and formulate a unified optimization framework which maximizes the perceptual quality of the multiple video objects in the given constraints such as the transcoding cost and the network bandwidth. Finally, we present plenty of the experimental results to show the effectiveness of the proposed method.

An Efficient Thumbnail Extraction Method in H.264/AVC Bitstreams (H.264/AVC 비트스트림에서 효율적으로 축소 영상을 추출 하는 방법)

  • Yu, Sang-Jun;Yoon, Myung-Keun;Kim, Eun-Seok;Sohn, Chae-Bong;Sim, Dong-Gyu;Oh, Seoung-Jun
    • Journal of Broadcast Engineering
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    • v.13 no.2
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    • pp.222-235
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    • 2008
  • Recently, as growing of high definition media services like HDTV and IPTV, fast moving picture manipulation techniques need to meet what those services require. Especially, a fast reduced-size image extracting method is required in the areas of video indexing and video summary Conventional DC image extracting methods, however, can't be applied to H.264/AVC streams since a spatial domain prediction scheme is adopted in H.264/AVC intra mode. In this paper, we propose a theoretical method for extracting a thumbnail image from an H.264/AVC intra frame in the frequency domain. Furthermore, the proposed scheme can extract the thumbnail very fast since all operations are applied to transform coefficients directly, after a general equation for the thumbnail extraction in nine H.264/AVC intra prediction modes is introduced, an LUT(Look Up Table) for each mode is designed. Through the implementation and performance evaluation, while the subject quality difference between the output of our scheme and a conventional output is negligible, the former can extract the thumbnail faster then the latter by up to 63%.

News Attributes and the Second-level Agenda Setting Study: Coverage of the nuclear waste storage facility in Wido (뉴스의 속성과 2차 의제설정 효과 연구: 위도 핵폐기장 보도를 중심으로)

  • Ban, Hyun;Choi, Won-Seok;Shin, Sung-Hye
    • Korean journal of communication and information
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    • v.25
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    • pp.65-102
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    • 2004
  • The purpose of this study was to examine the news attributes of the nuclear waste storage facility in Wido by conducting content analysis of two newspapers (Chosun Ilbo and Hangyoreh) and Ohmynews. Furthermore, this study measured the effects of news attributes on readers' attitude, opinion, and recognition of the event. The results of the content analysis indicated that all three newspapers focused on event-oriented coverage than issue-oriented one. Also, they only dealt with two issues-decision making process of the residents and rewards for residents-among a total of nine issues. That is, according to the hypothesis of the second-level agenda-setting theory, the media emphasize on a particular attribute while ignoring other attributes, which, in turn, make the particular attributes more salient. Based on the results of content analysis, this study conducted an experiment to measure the effects of media attributes on public recognition toward the attributes in terms of cognitive and of affective aspects. The results showed a significant relationship between media attributes and public attributes, which confirmed the effects of the second-level agenda setting. However, the transfer of attributes did not take place in affecting public opinion and public recognition of the event itself.

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Automatic Anticipation Generation for 3D Facial Animation (3차원 얼굴 표정 애니메이션을 위한 기대효과의 자동 생성)

  • Choi Jung-Ju;Kim Dong-Sun;Lee In-Kwon
    • Journal of KIISE:Computer Systems and Theory
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    • v.32 no.1
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    • pp.39-48
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    • 2005
  • According to traditional 2D animation techniques, anticipation makes an animation much convincing and expressive. We present an automatic method for inserting anticipation effects to an existing facial animation. Our approach assumes that an anticipatory facial expression can be found within an existing facial animation if it is long enough. Vertices of the face model are classified into a set of components using principal components analysis directly from a given hey-framed and/or motion -captured facial animation data. The vortices in a single component will have similar directions of motion in the animation. For each component, the animation is examined to find an anticipation effect for the given facial expression. One of those anticipation effects is selected as the best anticipation effect, which preserves the topology of the face model. The best anticipation effect is automatically blended with the original facial animation while preserving the continuity and the entire duration of the animation. We show experimental results for given motion-captured and key-framed facial animations. This paper deals with a part of broad subject an application of the principles of traditional 2D animation techniques to 3D animation. We show how to incorporate anticipation into 3D facial animation. Animators can produce 3D facial animation with anticipation simply by selecting the facial expression in the animation.

Spray Modeling: An Augmented Reality Based Tangible 3D Modeling Interface (스프레이 모델링: 증강현실 기반의 실체적인 3차원 모델링 인터페이스 제안)

  • Jung, Hee-Kyoung;Nam, Tek-Jin
    • Archives of design research
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    • v.18 no.4
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    • pp.119-128
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    • 2005
  • This paper presents an intuitive 3D modeling interlace based on a field study and prototype development. The process and tools of modeling were observed in workshops of professional design model making, day modeling, wood caning and glass crafting. The Spray Modeling interlace was developed from the observational analysis of the field study. It is a 3D modeling interface which combines particle spraying and day modeling in Virtual or Augmented Reality space. Virtual volume particles are sprayed on frames in Augmented Reality space as day modeling. It adopts a real air spay gun as a tangible interface device which provides coherent sound and air-force feedback. The prototype development and a user study showed that the interface supports new patterns of form development and expression. Control interfaces and requirements of auxiliary devices were found to be improved. This study examines the potential of the new interlace for designers working in 3D virtual and augmented reality. The new spraying interface is also expected to be used as an alternative interface in 3D computer workspace, games, education software and media art.

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Design and Performance Evaluation of a New SR-ARQ with an Adaptive Timer and Delayed NAK for Improving Handover Performance in Next-Generation Mobile Communication Networks (차세대 이동 통신망에서 핸드오버 성능 향상을 위한 적응형 타이머와 지연 NAK을 이용한 SR-ARQ 설계 및 성능 평가)

  • Park, Man-Kyu;Choi, Yun-Chul;Lee, Jae-Yong;Kim, Byung-Chul;Kim, Dae-Young;Kim, Jae-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.46 no.1
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    • pp.48-59
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    • 2009
  • Next generation mobile communication system will have various access networks and provide seamless multimedia data service to mobile nodes. The WiNGS system, one of these access network, has superior RAT(Radio Access Technology) and network connectivity other than previous ones. In this paper, we propose link-layer SR-ARQ between mobile node and WAGW to solve packet re-ordering problem during handover. In the proposed scheme, we apply the adaptive timer at the SR-ARQ sender to reduce unnecessary packet retransmission during handoff and delayed NAK algorithm at the SR-ARQ receiver for delaying NAK response due to temporary out-of-sequenced frames. We evaluate the performance of the proposed scheme by implementing the new SR-ARQ protocol at the link-layer using ns-2 simulator, and show the handover performance is improved greatly by preventing unnecessary retransmission.

A new approach for overlay text detection from complex video scene (새로운 비디오 자막 영역 검출 기법)

  • Kim, Won-Jun;Kim, Chang-Ick
    • Journal of Broadcast Engineering
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    • v.13 no.4
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    • pp.544-553
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    • 2008
  • With the development of video editing technology, there are growing uses of overlay text inserted into video contents to provide viewers with better visual understanding. Since the content of the scene or the editor's intention can be well represented by using inserted text, it is useful for video information retrieval and indexing. Most of the previous approaches are based on low-level features, such as edge, color, and texture information. However, existing methods experience difficulties in handling texts with various contrasts or inserted in a complex background. In this paper, we propose a novel framework to localize the overlay text in a video scene. Based on our observation that there exist transient colors between inserted text and its adjacent background a transition map is generated. Then candidate regions are extracted by using the transition map and overlay text is finally determined based on the density of state in each candidate. The proposed method is robust to color, size, position, style, and contrast of overlay text. It is also language free. Text region update between frames is also exploited to reduce the processing time. Experiments are performed on diverse videos to confirm the efficiency of the proposed method.

Fast Intra-Mode Decision for H.264/AVC using Inverse Tree-Structure (H.264/AVC 표준에서 역트리 구조를 이용하여 고속으로 화면내 모드를 결정하는 방법)

  • Ko, Hyun-Suk;Yoo, Ki-Won;Seo, Jung-Dong;Sohn, Kwang-Hoon
    • Journal of Broadcast Engineering
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    • v.13 no.3
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    • pp.310-318
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    • 2008
  • The H.264/AVC standard achieves higher coding efficiency than previous video coding standards with the rate-distortion optimization (RDO) technique which selects the best coding mode and reference frame for each macroblock. As a result, the complexity of the encoder have been significantly increased. In this paper, a fast intra-mode decision algorithm is proposed to reduce the computational load of intra-mode search, which is based on the inverse tree-structure edge prediction algorithm. First, we obtained the dominant edge for each $4{\times}4$ block from local edge information, then the RDO process is only performed by the mode which corresponds to dominant edge direction. Then, for the $8{\times}8$ (or $16{\times}16$) block stage, the dominant edge is calculated from its four $4{\times}4$ (or $16{\times}16$) blocks' dominant edges without additional calculation and the RDO process is also performed by the mode which is related to dominant edge direction. Experimental results show that proposed scheme can significantly improve the speed of the intra prediction with a negligible loss in the peak signal to noise ratio (PSNR) and a little increase of bits.