• Title/Summary/Keyword: Video

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Development of Video Data-base and a Video Annotation Tool for Evaluation of Smart CCTV System (지능형CCTV시스템 성능평가를 위한 영상DB와 영상 주석도구 개발)

  • Park, Jang-Sik;Yi, Seung-Jai
    • The Journal of the Korea institute of electronic communication sciences
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    • v.9 no.7
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    • pp.739-745
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    • 2014
  • In this paper, an evaluation of intelligent CCTV system is proposed with recording and implementation video and video DB. Videos for evaluation are recorded by dividing far, mid and near zone. Video DB has video recording information, detection area, and ground truth in XML format. A video annotation tool is proposed to make ground truth effectively in this paper. A video annotation tool writes ground truths of videos and includes evaluation comparing system alarms with ground truths.

Development of an Perceptual Video Quality Assessment Metric Using HVS and Video Communication Parameters (인간 시각 특성과 영상통신 파라미터를 이용한 동영상 품질 메트릭 개발)

  • Lee, Won-Kyun;Jang, Seong-Hwan;Park, Heui-Cheol;Lee, Ju-Yong;Suh, Chang-Ryul;Kim, Jung-Joon
    • 한국정보통신설비학회:학술대회논문집
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    • 2007.08a
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    • pp.155-158
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    • 2007
  • In this paper, we solved the underestimation problem of PSNR, which is caused by repeated frames, by easily synchronizing original and decoded frames using the proposed marks. Also we propose full-reference system which can be applied for measuring the quality of various kinds of video communication systems, e.g. wireless handsets, mobile phones and applications for PC. In addition, we propose a new video quality assessment metric using video communication parameters, i.e. frame rate and delay. According to the experiments, the proposed metric is not only appropriate for real-time video communication systems but also shows better correlation with the subjective video quality assessment than PSNR. The proposed measuring system and metric can be effectively used for measuring and standardizing the video quality of future communications.

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An Efficient Video Indexing Scheme Exploiting Visual Rhythm (비쥬얼 리듬을 이용한 효율적 비데오 인덱싱 기법)

  • Chung, Ji-Moon;Kim, Cheong-Ghil
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.10 no.3
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    • pp.103-109
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    • 2011
  • With the growing popularity of digital video applications, those areas of the efficient transmit, storage management, and search technology for video data are emerging as an important core technology. To be an effective video indexing system, users need to be able to find the video segments that they want. Unfortunately, video data is difficult to manage because of its unstructured data type and large volume with linear forms. This paper proposes a shot verification using visual rhythm and video retrieval system. The shot verification is designed to detect a segment from video easily and quickly, known as shot boundaries, just by changing the visual rhythm without playing the image. Therefore, this can decrease the false detected shots and generate the unidentified shots and key frames. The retrieval system is constructed in terms of visual descriptor from the list of MPEG-7. The effectiveness of the proposed shot verification process and video retrieval system is demonstrated.

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A Wavelet-Based Video Watermarking Approach Robust to Re-encoding

  • Yoo, Kil-Sang;Lee, Won-Hyung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.1C
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    • pp.124-130
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    • 2008
  • We present in this paper a method of digital watermarking for video data based on the discrete wavelet transform. In the proposed method, a watermark signal is inserted into the decompressed bitstream while detection is performed using the uncompressed video. This method allows detection if video has been manipulated or its format changed. We embed the watermark in the lowest frequency components of each frame in the un-coded video by using wavelet transform. The watermark can be extracted directly from the decoded video without access to the original video. Experimental results show that the proposed method gives the watermarked video of better quality and is robust against MPEG coding, down sampling and re-encoding to other type of video format such as MPEG4, H.264

Efficient scalable method of H.264 video coding for network transport (네트워크 전송을 위한 H.264 비디오의 효율적인 계층화 방법)

  • Hwang, Jeong-Taek;Park, Seung-Ho;Suh, Doug-Young
    • Proceedings of the KIEE Conference
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    • 2005.10b
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    • pp.192-194
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    • 2005
  • Acceptance of the international standards for video compression, such as H.261, MPEG-1 and MPEG-2, along with the developments in video codec hardware, has created an explosion of application. Among these, the long time quest for long-distance digital video transmission causes an increasing interest in transporting compressed video over networks which are nontraditional for this purpose, including asynchronous transfer mode networks, the Internet, and cellular and wireless channels. Transmission of compression video over packet network is improved for error resilience. And layered video coding techniques improves error resilience. We present a efficient method of scalable video coding for low bandwidth.

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Artificial Intelligence-Based Video Content Generation (인공지능 기반 영상 콘텐츠 생성 기술 동향)

  • Son, J.W.;Han, M.H.;Kim, S.J.
    • Electronics and Telecommunications Trends
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    • v.34 no.3
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    • pp.34-42
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    • 2019
  • This study introduces artificial intelligence (AI) techniques for video generation. For an effective illustration, techniques for video generation are classified as either semi-automatic or automatic. First, we discuss some recent achievements in semi-automatic video generation, and explain which types of AI techniques can be applied to produce films and improve film quality. Additionally, we provide an example of video content that has been generated by using AI techniques. Then, two automatic video-generation techniques are introduced with technical details. As there is currently no feasible automatic video-generation technique that can generate commercial videos, in this study, we explain their technical details, and suggest the future direction for researchers. Finally, we discuss several considerations for more practical automatic video-generation techniques.

Factors Affecting the Popularity of Video Clip: The Case of Naver TV (영상클립의 인기요인에 대한 실증 연구: 네이버 TV를 중심으로)

  • Yang, Gimun;Chung, Sun Hyung;Lee, Sang Woo
    • The Journal of the Korea Contents Association
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    • v.18 no.6
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    • pp.706-718
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    • 2018
  • This study analyzed Naver TV users' pattern of video clip watching, and analyzed the factors affecting the popularity of Naver TV's video clip. We selected 572 individual video clips that were ranked 50th in Naver TV rankings from September 10th to September 24th in 2017. We classified video clip's characteristics into several factors, including the number of likes, the number of subscriber, genre, video clip's types, and star appearances. We indexed the popularity of video clip, which implies the degree of popularity for each video clip. The results showed that the number of likes for video clips and the number of subscribers for each video clip were positively related to the popularity of video clip. Video clip's genre, video clip's type and star power positively affected the popularity of video clip. The effect of extras genre on the popularity of video clip was the lowest, followed by entertainment, music, and drama genre. but the difference among entertainment, music and drama genre was not statistically significant. Web-only video and non-broadcast video positively affected the popularity of video clip. Finally, the popularity of video clip was higher when stars appeared in the video clip.

Rotated Video Detection using Multi Region Binary Patterns (이중 영역 이진 패턴을 이용한 회전된 비디오 검출)

  • Kim, Semin;Lee, Seungho;Ro, Yong Man
    • Journal of Korea Multimedia Society
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    • v.17 no.9
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    • pp.1070-1075
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    • 2014
  • Due to a number of illegal copied videos, many video content markets have been threatened. Since this copied videos have intercepted the profits of the content holders, content developers lose the will to generate new contents. Therefore, video copy detection approaches have been developed to protect the copyrights of video contents. However, many illegal uploader who generate copied videos used video transformations to avoid video copy detection systems. Among of the video transformations, rotation and flipping did not distorted the quality of video contents. Thus, these two video transformations were adopt to generate copied video. In order to detect rotated or flipping copy videos, rotation and flipping robust region binary pattern (RFR) recently was proposed. But, this RFR has a weakness according to rotated angles. Therefore, in order to overcome this problem, multi region binary patterns are proposed in this paper. The proposed method has the similar performance with the original RFR. But, it showed much higher efficiency for memory spaces.

Objective Video Quality Assessment for Stereoscopic Video (스테레오 비디오의 객관적 화질평가 모델 연구)

  • Seo, Jung-Dong;Kim, Dong-Hyun;Sohn, Kwang-Hoon
    • Journal of Broadcast Engineering
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    • v.14 no.2
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    • pp.197-209
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    • 2009
  • Stereoscopic video delivers depth perception to users contrary to 2D video. Therefore, we need to develop a new video quality assessment model for stereoscopic video. In this paper, we propose a new method for objective assessment of stereoscopic video. The proposed method detects blocking artifacts and degradation in edge regions such as in conventional video quality assessment model. And it detects video quality difference between views using depth information for efficient quality prediction. We performed subjective assessment of stereoscopic video to check the performance of the proposed method, and we confirmed that the proposed algorithm is superior to the existing method in PSNR in respect to correlation with results of the subjective assessment.

A Study on the Effectiveness of Video Advertisements Generated by Social Media Users: Centered on Video Content Type and Information Framework (소셜미디어 사용자가 만드는 동영상 광고효과에 관한 연구: 동영상 콘텐츠 유형 및 정보 프레임워크 중심으로)

  • Zhang, Ning;KIM, Chee-yong
    • Journal of Korea Multimedia Society
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    • v.25 no.1
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    • pp.103-113
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    • 2022
  • Based on the information framework and regulatory focus theory, this paper verifies the impact on the advertising effect when the matching effect forms between the video advertising content type (Information Type, Entertainment Type) and the information framework (Promotional, Prevention) and the regulatory focus (Promotion Orientation, Prevention Orientation) in social media. In order to verify, after selecting of the experimental subjects and finishing the prior investigation of the experimental operation, four video advertisements and formal experiments were performed. The experimental results showed that first, the content type affects the advertising effect of the video and the information framework; when the information video matches the preventive information framework, it will have a more obvious positive effect on the advertising effect; when the entertainment video matches the promotion information framework, it will have a more obvious positive effect on the advertising effect. Second, with the two matches of video content type and information framework, the entertainment-oriented video has a more obvious positive effect for the information-oriented video audience; the above results enrich user created content research and improve the quality and communication efficiency of video in social media.