• Journal of Broadcast Engineering
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• v.12 no.4
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• pp.333-341
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• 2007

Multi-view video has recently gained much attraction from academic and commercial fields because it can deliver the immersive viewing of natural scenes. This paper presents multi-view video processing being composed of intermediate view reconstruction (IVR), graphics composition, and multi-view video viewer. First we generate virtual views between multi-view cameras using depth and texture images of the input videos. Then we mix graphic objects to the generated view images. The multi-view video viewer is developed to examine the reconstructed images and composite images. As well, it can provide users with some special effects of multi-view video. We present experimental results that validate our proposed method and show that graphic objects could become the inalienable part of the multi-view video.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.7
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• pp.3184-3190
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• 2011

In this paper, we propose a method to detect Iris Round wipe transitions with circular moving borders in digital video data. The suggested method robustly extracts circular moving borders from the input image using improved Hough transform, and finally detects Iris Round wipes by effectively analyzing their moving directions and shapes. In order to evaluate the performance of the suggested algorithm, the experimental results show that the proposed method can effectively detect Iris Rounds with circular moving borders in various video data.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.285-287
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• 1998

본 논문에서는 다양한 멀티미디어 스트림(multimedia stream)을 재생할 수 있는DirectShow SDK를 이용하여, 비디오의 특수효과를 구현하기 위한 변환 필터(Transform filter) 제작 방법에 대해 소개한다. DirectShow는 여러 가지 포맷(MPEG, AVI, MOV, WAV)으로 부호화된 digital movie나 sound를 재생할 수 있는 run-time(.ock)과 dynamic-link library (DLLs)를 제공하여 필터의 제작을 용이하게 한다. 본 논문에서는 디지털 영상 특수효과 중에서 Clip이라는 특수효과를 예로하여 변환 필터를 제작하는 방법을 소개한다. 또한 DirectShow Documentation에서 제공된 변환방법을 수정하여 변환필터의 입력 pin에서 출력 pin으로의 불필요한 복사를 줄임으로써 수행 속도를 개선하는 특수효과 구현 방법을 제시한다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.43 no.4 s.310
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• pp.123-132
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• 2006

In this paper, the digital video and audio system is improved so that various digital video data formats in DVD disc, and digital audio data formats through the S/PDIF ports may be decoded. It is not easy to implement all decoding functions of video and audio by a DVD processor. The special structure in audio decoding circuit is proposed in this system so as to have simultaneously almost same video and audio performance in quality. By dividing the decoding circuit separately into video and audio part, the audio quality can be dramatically improved together with supporting several audio formats and with several effects. In order to satisfy the perfect audio system to support to audio decoding formats, it is just enough to get the expensive, complicated decoder. However, it may be not easy to get this expensive decoder in near future. Therefore it is rather to adopt the downloading method by which the host should download the appropriate code into memory by detecting the corresponding audio bit streams. It is proved that this method may be efficient in the point of sharing resource of audio data for video decoding.

• The KIPS Transactions:PartB
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• v.14B no.5
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• pp.351-360
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• 2007

Video Completion refers to a computer vision technique which restores damaged images by filling missing pixels with suitable color in a video sequence. We propose a new video completion technique to fill in image holes which are caused by removing an unnecessary object in a video sequence, where two objects cross each other in the presence of camera motion. We remove the closer object from a camera which results in image holes. Then these holes are filled by color information of some others frames. First of all, spatio-temporal volumes of occluding and occluded objects are created according to the centroid of the objects. Secondly, a temporal search technique by voxel matching separates and removes the occluding object. Finally. these holes are filled by using spatial search technique. Seams on the boundary of completed pixels we removed by a simple blending technique. Experimental results using real video sequences show that the proposed technique produces new completed videos.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.400-406
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• 2019

This study will explore the reenactment of visual special effects used in TV dramas. The subjects of the study are images that are reproduced in visual special effects through and . Accordingly, we looked at the changes in the way TV dramas were produced according to the times, and looked at the changes in the market. Also, we looked at cases of visual special effects of Korean dramas, and looked at expressions according to the degree of completion of visual special effects. For the purpose of the analysis of the research targets, the images of reproducibility and the flow through reality were analyzed. In the case of , the period setting is realistic, but visual special effects were used to maximize the actor's safety and expression, and in the case of , the visual effects were used to maximize the aesthetic of the period background. In addition, it can be seen that the visual special effects were used for the effect of PPL on the export of images. This shows that the emphasis of reality and image montage techniques are being used to pursue hyperrealism. It is now possible to actively express and use the beauty of TV dramas rather than technical limitations. In addition, the pursuit of realism can actively express the changing times of digital age. This is an active representation of the camera's angle, lighting, and perspective that coincides with the background. The environment of video production is crucial for realistic expressions. The study examined various visual directions and applications. In TV images, we looked at reproduction, which can make a natural period of time by combining. As a follow-up study, we are going to study the changes in the new quadratic image based on the present image representation.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 1997.11a
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• pp.39-43
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• 1997

본 논문에서는 ActiveMovie와 같은 stream data 기반의 library에서 실시간으로 사용될 수 있는 영상 특수효과 filter들을 소개하고, 알고리즘 개발 및 구현방법에 대해 기술한다. ActiveMovie는 기본적으로 mpeg decoder 및 Video for Windows(.avi file) decoder를 제공하여 프로그래밍을 수월하게 한다. 또한 각 module에 filter라는 개념을 도입하고 filter graph라는 구조를 이용하여 filter의 추가, 삭제를 용이하게 한다. 본 논문에서는, 디지털 영상 특수효과 중에서 Mosaic, Wind, Ghosting 등의 point processing filter들을 실시간으로 처리하기 위한 고속의 알고리즘을 제안한다. 제안하는 알고리즘은 픽셀의 포인터를 특정 위치로 이동시키지 않고 단순히 주소값을 하나씩 증가시키는 연산을 이용하여 실시간 특수효과를 얻을 수 있도록 한다. 또한 이와 같은 특수효과 알고리즘들을 ActiveMovie환경에서 구현함으로써 제안된 기법에 의하여 실시간 동영상 특수효과 처리가 가능함을 입증한다.

• Journal of Digital Convergence
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• v.19 no.8
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• pp.293-299
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• 2021

With the development of OSMU mode in the game industry, the most popular 3D mobile game 'Honour Of Kings' in China, in addition to the entertainment effects of the game itself, has paid more attention to the production of promotional animation video contents in recent years. The huge animation market is generating abundant game revenue for 'Honour Of Kings'. This paper selected the most popular game promotional animations 'MU BIAO' and 'Bu Ye Chang'an' through a survey of 30 CG promotional animation in the official story station of 'Honour of Kings'. Important elements such as rich stories and the special effects of the gorgeous scenes, etc are summarized. Through the research of this paper, grasped the importance of promotional animation content in the game industry, and can expect the common growth of the game industry and the animation industry, which is one of the ways to create high profits in the game market.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.19-29
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• 2022

This study was conducted with the aim of verifying the effects of restaurant video taping and job communication drawing board production activities on cooking job skills of high school students with intellectual disabilities. The study participants consisted of three students with intellectual disabilities enrolled in the high school course of a special school, and the experimental environment consisted of a kitchen in the restaurant and a classroom in the special school. For the research design, the technique of multiple probe design across subjects according to a single subject research was used. The intervention program consisting of independent variables was applied as a linkage procedure in which study participants videotaped the kitchen's environmental facilities, tools, materials, and staff perform cooking job skills and then taped data from the classroom scene on a job communication drawing board. Cooking job skills consisting of dependent variables are defined as the performance of research participants cooking gimbap directly in the kitchen of the restaurant. As a result of the study, it was found that participants effectively acquired, maintained, and generalized cooking job skills through intervention programs.