frequency domain analysis in multimedia

... the research and developments in digital signal processing that is instrumental in the extraordinary progress in the information technology that we are witnessing. 4 In practice, any given signal ... 4000 Hz is hence called the “folding frequency. ” In general, half the sampling frequency is known as the folding frequency (expressed in radians per second or in hertz). 4 This author feels that ... result in deriving X 3 (e jω ) above. The sequence x 13 (n) is plotted in Figure 3.13, while the plots of x 1 (n), x 3 (n) are shown in Figures 3.14 and 3.15, respectively. 148 FREQUENCY- DOMAIN ANALYSIS Suppose...

Ngày tải lên: 29/09/2013, 21:20

... Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008, Article ID 293453, 2 pages doi:10.1155/2008/293453 Editorial Human-Activity Analysis in Multimedia ... and the information from different sensors in a multimodal system. Dimoulas et al., in the paper “Joint wavelet video denoising and motion activ- ity detection in multimodal human activity analysis: ... audio, motion, and accompanying text, and typically hinges on a host of machine-learning methodolo- gies to handle the inherent variability and complexity of the ensuing features. The computational...

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 22/06/2014, 23:20

... Time-varying filtering Time-varying filtering is used in order to obtain watermark with specific time -frequency properties as well as to provide the inverse transform from the time -frequency domain. In the ... inverse mapping from the time -frequency domain. Additionally, a reliable procedure for blind watermark detection is provided by modifying the correlation detector in the time -frequency domain. It ... content features combined with robust watermarking [7]. The existing watermarking techniques are mainly based on either the time or frequency domain. However, in both cases, the time -frequency characteristics...

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 23/06/2014, 01:20

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 05/09/2013, 16:11

... of these models in the z domain, we can derive the other models in the z domain and also the preceding models given in the time domain. It is very important to know how to obtain any one model ... 3) CHAPTER 2 Time -Domain Analysis and z Transform 2.1 A LINEAR, TIME-INVARIANT SYSTEM The purpose of analysis of a discrete-time system is to find the output in either the time or frequency domain of the ... d 1 d 2 x(n) (2.56) But remember that in general, it may not be so easy to obtain the single-input, single-output relationship from the many equations written in the time domain, by successive elimination. It is always...

Ngày tải lên: 29/09/2013, 21:20

Ngày tải lên: 24/10/2013, 15:20

Ngày tải lên: 11/12/2013, 23:53

Ngày tải lên: 03/01/2014, 19:40

... translocation domain (T domain) and the receptor-binding domain. The C and T domains remain covalently linked by a disulfide bond. Following binding to its cell-surface receptor, diphtheria toxin is internalized ... chain of 58 kDa [1]. During cell intoxication, diphtheria toxin is cleaved by furin into two fragments: the A chain corresponding to the catalytic domain (C domain) ; and the B chain corresponding ... deuterium; MG domain, molten globule domain; N, native; T domain, translocation domain. FEBS Journal 277 (2010) 653–662 ª 2009 The Authors Journal compilation ª 2009 FEBS 653 can result in the formation...

Ngày tải lên: 16/02/2014, 09:20

... extents, coarse-graining transferring information with increasing grain size, and fine-graining transferring information with decreasing grain size. Sometimes, upscaling and downscaling refer specifically ... downscaling, the two steps are disaggregating information and singling out (Figure 2.1). Disaggregating coarse-grained information is to derive the detailed pattern within a spatial domain (fine-graining) ... studies in scaling and uncertainty analysis that are relevant to ecology. The series of case studies included here illustrate how scaling and uncertainty analysis are being conducted in ecology...

Ngày tải lên: 17/02/2014, 19:20

... should be incorporated into the test. Uncertainty analysis is the attainment of some understanding of the type and magnitude of uncertainty encompassing the variables to be tested, and using it ... uncertainty should not be included in the probabilistic analysis unless its impact on the project result, within the expected margins of uncertainty, is significant. The reason for including ... scenarios generated in the analysis. Decision criteria By using a discount rate that allows for risk, investment decision criteria normally used in deterministic analysis maintain their validity...

Ngày tải lên: 18/02/2014, 07:20

... an insurance company and investment portfolios 3.3.1 Mathematical appendix 5 3.4 Risks in traditional and innovative methods in life insurance 3.5 Reinsurance risks 3.6 Extended analysis of insurance ... of optimal investment. In the previous sections we studied investment strategies (portfolios) from the point of view of hedging contingent claims. Another criterion for comparing invest- ment ... dollars) and invests the obtained 46.8 dollars in a bank account. Note that in both examples the ‘minimal hedging’ price coincides with the ‘risk- neutral’ price and they differ from the intuitive...

Ngày tải lên: 22/02/2014, 06:20

... implicated in stop codon recognition [5–14]. The role of the middle (M) domain will be described in detail below. The C domain of eRF1 interacts with the C domain of eRF3 [15–18], and the binding of ... chain release factor is a three -domain protein involved in the termination of translation, the final stage of poly- peptide biosynthesis. In attempts to understand the roles of the mid- dle domain ... spectroscopy; M -domain, eRF1 middle domain (or domain 2); PTC, peptidyl transferase center of the ribosome; R 1 , longitudinal or spin–lattice relaxation rate; R 2 , transverse or spin–spin relaxation...

Ngày tải lên: 07/03/2014, 05:20