temporal jnd model guided video watermarking scheme

... Combining the theory of the visual secret sharing scheme and the viewpoint of the human visual model, this paper proposes a new watermarking scheme to embedding the digital color watermark into ... HUMAN VISUAL MODEL In 1996, a human visual model for differential pulse code modulation (DPCM) was proposed by Kuo and Chen [19] They took Weber’s law [20] into consideration in their model Later, ... in their model Later, they applied another scheme based on the model of vector quantization (VQ) image compression [21] The purpose of the human visual model is to evaluate the sensitivity of the...

Ngày tải lên: 23/06/2014, 01:20

... enhanced with the proposed scheme IV CONCLUSION In this paper, we have made a contribution to a multiple non-blind watermarking scheme based on the DWT The proposed scheme consists in applying ... image mes should components, like the schemes [7], [8] and [9] have high capacity - Statistical approach: this approach is known as Patchwork Every watermarking scheme includes an encod [10], it ... (1,5), (f) Cropping Robust dynamic watermarking in DWT domain,” Procedia C omputer Science vol 3, 2010 [12] P Tao and A M Eskicioglu, “A ro bust multiple watermarking scheme in the discrete wav elet...

Ngày tải lên: 21/11/2013, 23:58

... comparable to other watermarking schemes This indicates that the proposed watermarking scheme has good visual fidelity Zhu’s scheme obtains the best watermarked image quality, while Tao’s scheme is the ... Proposed scheme 40.379 Experimental Results The experimental results of the proposed watermarking scheme are presented in this section In order to test the robustness of the proposed watermarking scheme, ... 0.9888 watermarking schemes which are proposed by Zhu and Sang [14], Xiao et al [16], Leung et al [17], Tao and Eskicioglu [18], and Ni et al [19] Tables 1–10 show the performance of these watermarking...

Ngày tải lên: 21/06/2014, 08:20

... the watermarking components, the proposed scheme is highly robust against various low-frequency attacks, which will remove the low frequency component of the image On the other hand, some watermarking ... Thus, the scheme is expected to be also robust to the high-frequency attacks, which will destroy the high-frequency components of the image Consequently, the proposed watermarking scheme is robust ... watermark exploiting the modulation of the energy relations Xiao et al [5] proposed an adaptive watermarking scheme based on texture and luminance features in the CT domain, which uses the texture and...

Ngày tải lên: 21/06/2014, 16:20

... ambiguities are addressed in our watermarking scheme The use of ICA in watermarking application is not new Noel and Szu [18] were among the first to introduce ICA in watermarking application Likewise, ... CONCLUSION A watermarking algorithm alone cannot completely address the complex issues involved in copyright protection For a reliable and secure watermarking scheme, it is necessary that the watermarking ... digital signature scheme is to use a one-way hash function and the RSA public key cryptosystem [14] 2.2.1 Signature generation PRELIMINARIES Before we describe our watermarking scheme and related...

Ngày tải lên: 22/06/2014, 23:20

... Consequently, we can classify video watermarking schemes into two main categories: still image-based techniques and video- adapted techniques Today, most of the video watermarking approaches rely ... still frame as well as the temporal information that characterizes a video It has to be noted that this scheme is among the first to deal with video watermarking Among watermarking approaches working ... Applied Signal Processing 2.2 Watermarking protection schemes A video watermark technique consists of the hiding of information into a video sequence to protect the video content as a whole One...

Ngày tải lên: 23/06/2014, 01:20

... scene-based video watermarking algorithm using a temporal wavelet transform of the video scenes A wavelet transform along the temporal domain of a video scene results in a multiresolution temporal ... transform Scene-Based RST-Resilient Video Watermarking Technique Video sequence s PVTM extraction 2115 v1 WFV extraction v2 Temporal watermark w + Watermarked video s Raw video seq domain S Inverse PVTM ... paper TEMPORAL WATERMARKING FOR VIDEO SEQUENCE Since a typical video sequence is composed of many frames with temporal redundancy, statistical watermark-estimation, collecting and analyzing the video...

Ngày tải lên: 23/06/2014, 01:20

... 10 2.2 MPEG Video Format .10 2.3 Decoding Workload Model 12 2.4 Energy Saving Schemes for Mobile Video Applications 15 2.5 Objective Video Quality Measure ... between decoding workload and video quality Based on the analysis of video structure and decoder implementations, we propose a decoding workload model Given a video clip, the model can accurately estimate ... 3.15 the comparison between our model and the history-based model 41 Figure 4.1 System architecture for the transcoding scheme 44 Figure 4.2 Transcoding Scheme .45 Figure 4.3...

Ngày tải lên: 11/09/2015, 09:07

... Different Models 76 5.2.1 Traditional Hedonic Model 77 5.2.2 Spatio -temporal Autoregressive Model (STAR) 79 5.2.3 Two Order Spatio -temporal Autoregressive Model (2STAR) 84 5.3 Comparison of Model ... 51 4.2 Traditional Hedonic Price Model 51 4.3 Spatio -temporal Autoregressive Model (STAR) 53 4.4 Two Order Spatio -temporal Autoregressive Model (2STAR) 55 4.5 Model Selection Criteria 59 4.6 The ... difficulty in modeling temporal effect is that it is not clear on how to combine different spatial and temporal scales into one model, (Gelfand, Ecker, Knight and Sirmans, 2001) Spatio -temporal models,...

Ngày tải lên: 26/09/2015, 09:57

... TEUSINK ET AL MODEL Variations between the model used for this work and the model published in [7] The variant parameters for enzyme rate equations are those that were supplied to us in the model made ... download from http://users.aber.ac.uk/lep/ models.shtml Another version of the model may be run via the internet at http://jjj.biochem.sun.ac.za The variant of the model upon which we base our work contains ... concentrations from the fitted models are much closer to the experimentally determined values than are those from the original model (Table 2) Although fitting the glycolysis model to the experimental...

Ngày tải lên: 17/03/2014, 11:20

... into a common 3D model 2.4 3D Modeling To reduce geometric complexity, a 3D surface is approximated to the point cloud generated by previous steps This step also tailors the model so it can be ... tracking algorithm has produced a sparse surface model, this is not sufficient to reconstruct geometrically correct and visually acceptable surface models A dense disparity matching step is required ... 3D reconstruction it is extremely important for the accuracy of the final model since it defines the “skeleton” of the model The process starts with creating an initial reconstruction frame with...

Ngày tải lên: 22/03/2014, 11:20

... Words Language Model (LWLM) (Deschacht and Moens, 2009) – a language model that learns from an unlabeled corpus how to provide a weighted set of synonyms for words in context The LWLM model is trained ... the assumption that since temporal trigger words usually occur at the headword position, adding alternative synonyms for the headword should allow our model to learn temporal triggers that did ... classification models Experimental Setup The tested model is trained on the official TempEval 2010 training data with 53450 tokens and 2117 annotated TIMEX3 tokens For testing the portability of the model...

Ngày tải lên: 30/03/2014, 21:20

... enhanced video quality In the evaluation of the proposed multi-level adaptive scheme, we consider the PSNR as a spatial video quality metric In addition, we use newly introduced temporal video quality ... required video scaling, hence, improving the temporal and spatial quality of the reconstructed video In our analysis and simulations, in addition to SW-ARQ, we consider more practical ARQ schemes ... statistical channel models, namely, additive white Gaussian noise (AWGN) and Rayleigh channel models Moreover, our proposed adaptive scheme takes into account the sensitivity of video frames when...

Ngày tải lên: 20/06/2014, 21:20

... contextual information types, temporal context is of particular importance in video analysis This is used for modeling temporal relations between semantic elements or temporal variations of particular ... impact of temporal context on video retrieval in Proceedings of International Conference on Content-Based Image and Video Retrieval 299–308 (2008) L Rabiner, A tutorial on hidden Markov models and ... based on hidden Markov model IEEE Trans Multimedia 7(3), 538–550 (2005) J Zhou, X-P Zhang, An ica mixture hidden markov model for video content analysis IEEE Trans Circuits Syst Video Technol 18(11),...

Ngày tải lên: 20/06/2014, 22:20

... Media-layer model Bitstream-level VQA model Hybrid VQA model Figure Scope of the four types of VQA models The columns are four types of input information to the models of the loss-impaired parts of video, ... BLF/IFR used in existing models are effective for video system planning modeling, but are not effective for video quality monitoring applications Further, a model is proposed for video monitoring scenario, ... challenging than that for video system planning model Second, we propose a novel quality monitoring model, which has low complexity and fully utilizes the video spatiotemporal complexity estimation...

Ngày tải lên: 21/06/2014, 00:20

... The scalable video coding (SVC) scheme [8] allows for the delivery of a decodable and presentable quality of the video depending on the MSS’ channel quality The SVC scheme divides a video stream ... subscribes a scalable video, in which the video rate is 320 kbps (i.e., 1.6 kb per frame) The video rate is a measure of the rate of information content in a video stream The video is divided equally ... combinations of video layers The more video layers an MSS receives, the better video quality it can get In this article, we apply the utility [9,10] to measure the satisfaction degree of the video quality...

Ngày tải lên: 21/06/2014, 02:20

... uses generative topic models for modeling and recognizing action categories based on the so-called Bag-of-Words (BoW) model The underlying concept of a BoW is that the video sequences are represented ... accurately discriminate between temporal variations of different actions 4.2.2 Temporal Self-Similarities of Action Snippet Video analysis is seldom carried out directly on row video data Instead feature ... parallel, a significant amount of work is targeted at modeling and understanding human motions by constructing elaborated temporal dynamic models [24–27] Finally, there is also a fertile and broadly...

Ngày tải lên: 21/06/2014, 07:20

... evaluation of the temporal artifacts in medium frame rate binary halftone videos produced from grayscale continuoustone videos We utilize the proposed quality assessment framework to design video halftoning ... for the perceptual assessment of two temporal artifacts in medium frame rate binary video halftones produced from grayscale continuous-tone videos The two temporal artifacts discussed in this ... can benefit from the temporal artifact evaluation criteria presented in this paper The perception of temporal artifacts is dependent on the frame-rate at which the halftone video is viewed For...

Ngày tải lên: 21/06/2014, 08:20

... Processing (PLIP) model was formulated The PLIP model is a generalization of the LIP model which attempts to overcome the mentioned shortcomings of the standard processing and LIP models and can ... LIP model are analyzed The PLIP model generalizes the LIP model, which processes images as absorption filters known as graytones based on M, the maximum value of the range of I The original LIP model ... functionality according to a physical model Thus, for positive γ, the PLIP model physically provides a balance between the standard linear processing model and the LIP model Conversely, negative values...

Ngày tải lên: 21/06/2014, 08:20