• Title, Summary, Keyword: Video signature

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A Frame-Based Video Signature Method for Very Quick Video Identification and Location

  • Na, Sang-Il;Oh, Weon-Geun;Jeong, Dong-Seok
    • ETRI Journal
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    • v.35 no.2
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    • pp.281-291
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    • 2013
  • A video signature is a set of feature vectors that compactly represents and uniquely characterizes one video clip from another for fast matching. To find a short duplicated region, the video signature must be robust against common video modifications and have a high discriminability. The matching method must be fast and be successful at finding locations. In this paper, a frame-based video signature that uses the spatial information and a two-stage matching method is presented. The proposed method is pair-wise independent and is robust against common video modifications. The proposed two-stage matching method is fast and works very well in finding locations. In addition, the proposed matching structure and strategy can distinguish a case in which a part of the query video matches a part of the target video. The proposed method is verified using video modified by the VCE7 experimental conditions found in MPEG-7. The proposed video signature method achieves a robustness of 88.7% under an independence condition of 5 parts per million with over 1,000 clips being matched per second.

A Study on Cross-Association between UCI Identification System and Content-based Identifier for Copyright Identification and Management of Broadcasting Content (방송콘텐츠 저작권 식별관리를 위한 UCI 표준식별체계와 내용기반 식별정보의 상호연계 연구)

  • Kim, Joo-Sub;Nam, Je-Ho
    • Journal of Broadcast Engineering
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    • v.14 no.3
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    • pp.288-298
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    • 2009
  • In this paper, we propose a scheme to associate content-based video signature with Universal Content Identifier (UCI) system of broadcast content for copyright identification and management. Note that content-based video signature can identify a previously distributed content since it is directly extracted from content itself without allocation process of identifier such as UCI. Thus, we design the schema of UCI application metadata, which provides a video signature in order to consistently maintain a systemic link between UCI and the video signature. Also, we present the scenarios of copyright identification, management and additional service, which are based on transmission and management mechanism of video signature with UCI identification system.

A Study on Transmission and Management Service Scenario for Video Signature of Broadcasting Program based on UCI Identification System (UCI 표준식별체계 기반 방송프로그램의 Video Signature 전송 및 관리 서비스 시나리오 연구)

  • Kim, Joo-Sub;Nam, Je-Ho
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • pp.229-232
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    • 2008
  • 본 논문에서는 방송프로그램 저작권 식별관리를 위한 방송프로그램의 Video Signature와 국가표준콘텐츠식별 체계인 UCI(Universal & Ubiquitous Content Identifier)와의 연계 방안을 제시한다. Video Signature는 UCI와 같은 식별자의 인위적인 부여 과정이 없더라도 비디오 콘텐츠 자체에서 직접 특징정보를 추출할 수 있기 때문에, 이미 배포 유통된 콘텐츠에 대해서도 식별 확인이 가능하다. 따라서, 본 연구에서는 UCI 표준식별체계와 방송프로그램의 Video Signature와의 지속적인 연계를 위하여, 바이너리로 표현된 Video Signature가 포함된 UCI 응용 메타데이터를 정의한다. 그리고 UCI 표준식별체계 기반의 Video Signature 전송 및 관리 메카니즘에 기반한 방송프로그램의 저작권 식별관리 시나리오를 제시한다.

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Signature Extraction Method from H.264 Compressed Video (H.264/AVC로 압축된 비디오로부터 시그너쳐 추출방법)

  • Kim, Sung-Min;Kwon, Yong-Kwang;Won, Chee-Sun
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.46 no.3
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    • pp.10-17
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    • 2009
  • This paper proposes a compressed domain signature extraction method which can be used for CBCD (Content Based Copy Detection). Since existing signature extraction methods for the CBCD are executed in spatial domain, they need additional computations to decode the compressed video before the signature extraction. To avoid this overhead, we generate a thumbnail image directly from the compressed video without full decoding. Then we can extract the video signature from the thumbnail image. Experimental results of extracting brightness ordering information as the signature for CBCD show that our proposed method is 2.8 times faster than the spatial domain method while maintaining 80.98% accuracy.

Video Sequence Matching Using Normalized Dominant Singular Values

  • Jeong, Kwang-Min;Lee, Joon-Jae
    • Journal of Korea Multimedia Society
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    • v.12 no.6
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    • pp.785-793
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    • 2009
  • This paper proposes a signature using dominant singular values for video sequence matching. By considering the input image as matrix A, a partition procedure is first performed to separate the matrix into non-overlapping sub-images of a fixed size. The SVD(Singular Value Decomposition) process decomposes matrix A into a singular value-singular vector factorization. As a result, singular values are obtained for each sub-image, then k dominant singular values which are sufficient to discriminate between different images and are robust to image size variation, are chosen and normalized as the signature for each block in an image frame for matching between the reference video clip and the query one. Experimental results show that the proposed video signature has a better performance than ordinal signature in ROC curve.

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Flexible Video Authentication based on Aggregate Signature

  • Shin, Weon;Hong, Young-Jin;Lee, Won-Young;Rhee, Kyung-Hyune
    • Journal of Korea Multimedia Society
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    • v.12 no.6
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    • pp.833-841
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    • 2009
  • In this paper we propose a flexible video authentication scheme based on aggregate signature, which provides authenticity of a digital video by means of cryptographic signature to guarantee right of users. In contrast to previous works, the proposed scheme provides flexible usages on content distribution system, and it allows addition of new contents to the signed contents and deletion of some parts of the signed contents. A modification can be done by content owner or others. Although contents are modified by one or more users, our scheme can guarantee each user's right by aggregation of the each user's signatures. Moreover, proposed scheme has half size of Digital Signature Algorithm (DSA) with comparable security.

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Video Signature using Spatio-Temporal Information for Video Copy Detection (동영상 복사본 검출을 위한 시공간 정보를 이용한 동영상 서명 - 동심원 구획 기반 서술자를 이용한 동영상 복사본 검출 기술)

  • Cho, Ik-Hwan;Oh, Weon-Geun;Jeong, Dong-Seok
    • 한국HCI학회:학술대회논문집
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    • pp.607-611
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    • 2008
  • This paper proposes new video signature using spatio-temporal information for copy detection. The proposed video copy detection method is based on concentric circle partitioning method for each key frame. Firstly, key frames are extracted from whole video using temporal bilinear interpolation periodically and each frame is partitioned as a shape of concentric circle. For the partitioned sub-regions, 4 feature distributions of average intensity, its difference, symmetric difference and circular difference distributions are obtained by using the relation between the sub-regions. Finally these feature distributions are converted into binary signature by using simple hash function and merged together. For the proposed video signature, the similarity distance is calculated by simple Hamming distance so that its matching speed is very fast. From experiment results, the proposed method shows high detection success ratio of average 97.4% for various modifications. Therefore it is expected that the proposed method can be utilized for video copy detection widely.

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Fast Video Detection Using Temporal Similarity Extraction of Successive Spatial Features (연속하는 공간적 특징의 시간적 유사성 검출을 이용한 고속 동영상 검색)

  • Cho, A-Young;Yang, Won-Keun;Cho, Ju-Hee;Lim, Ye-Eun;Jeong, Dong-Seok
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.11C
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    • pp.929-939
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    • 2010
  • The growth of multimedia technology forces the development of video detection for large database management and illegal copy detection. To meet this demand, this paper proposes a fast video detection method to apply to a large database. The fast video detection algorithm uses spatial features using the gray value distribution from frames and temporal features using the temporal similarity map. We form the video signature using the extracted spatial feature and temporal feature, and carry out a stepwise matching method. The performance was evaluated by accuracy, extraction and matching time, and signature size using the original videos and their modified versions such as brightness change, lossy compression, text/logo overlay. We show empirical parameter selection and the experimental results for the simple matching method using only spatial feature and compare the results with existing algorithms. According to the experimental results, the proposed method has good performance in accuracy, processing time, and signature size. Therefore, the proposed fast detection algorithm is suitable for video detection with the large database.

Analysis of Uniqueness and Robustness Properties of Ordinal Signature for Video Matching (비디오 정합을 위한 오디널 특징의 유일성 및 강건성 분석)

  • Jeong Kwang-Min;Kim Jeong-Yeop;Hyun Ki-Ho;Ha Yeong-Ho
    • Journal of Korea Multimedia Society
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    • v.9 no.5
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    • pp.576-584
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    • 2006
  • Content-based video matching is measuring a similarity of video signature compared to the original clip and copies of media. Specially, it is very important to match the exact frame position, but it depends on frame rate, noise condition and compression format of video. Ordinal signature shows good performance than other video signatures under normal condition but the previous didn't try to find the uniqueness and robustness. Hua et al. performed a uniqueness test under compressed in different formats or frame size. However, they used other compression format image instead of noise in robustness test. This paper proposes robustness test method using several noise models and analyzes the performance of robustness and uniqueness.

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Incremental-based Digital Signature with Neighbouring Block Similarity Measure for Video Authentication

  • Kultangwattana, Wilaiporn;Chotikakamthorn, Nopporn
    • Proceedings of the IEEK Conference
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    • pp.1412-1415
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    • 2002
  • This paper describes a digital signature-based method for original and updated video authentication. The method uses multiple digital signatures in dealing with video data undergoing multiple change/updating. In addition, a feature based on neighbouring block similarity measure is applied to deal with certain image/video modification. The proposed method can cope with wide range of image/video tampering. It is suitable for practical use of video data, where updating may be performed by more than one legal parties. Experimental results are included with concluding remarks.

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