Báo cáo hóa học: " Research Article A Secret Image Sharing Method Using Integer Wavelet Transform" ppt

... CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2007, Article ID 63281, 13 pagesdoi:10.1155/2007/63281 Research Article A Secret Image Sharing Method Using Integer Wavelet TransformChin-Pan ... when images at low bit rate are recovered. Wang and Su[5] developed a secret image sharing method based on theGalois ﬁeld. It has the advantage of producing small shadowimages but does not have ... dealer distributes a secret image intom= 6 shares and each participant holds one share. Later, ifr= 4 shares are received, the secret image can be revealed.If less than 4 shares are received,...

Báo cáo hóa học: " Research Article A Novel Image Compression Method Based on Classiﬁed Energy and Pattern Building Blocks Umit Guz" ppt

... Because of its data reduction capability, DWThas become a standard method in the image compressionapplications. In the wavelet compression, the image data istransformed and compressed as a ... ratios and image quality even at low bit rates.1. IntroductionRaw or uncompressed multimedia data such as graphics,still images, audio, and video requires substantial storagecapacity and transmission ... theDCT. Wavelet transform (WT) represents an image as a sumof wavelet functions (wavelets) with diﬀerent locations andscales [15]. Decomposition of an image into the waveletsinvolves a pair of waveforms....

Báo cáo hóa học: " Research Article A New Inverse Halftoning Method Using Reversible Data Hiding for Halftone Images" docx

... operationExtracting operationPattern pairsPredicted image 2. Pattern matching4. Reversible data hidingPattern pairs image Grayscale image grayscale image Selected LUT templates3. LUT template ... IntroductionInverse halftoning is a process which transforms halftoneimages into grayscale images. Halftone images are binaryimages that provide a rendition of grayscale images andconsists of “0” and “1”. ... 500000000110011111701551601510HalftoningOriginal grayscale image Halftone image Predicted by LUTby Gaussian ﬁlteringpredictedFigure 6: An example for the comparison of image quality loss using two diﬀerent methods.Grayscale image Halftone...

báo cáo hóa học:" Research Article A Hypothesis Test for Equality of Bayesian Network Models" pptx

... experimental data, and some advantage to a pathway modelling approach to this problem is reported.1. IntroductionGraphical models play a central role in modelling genomicdata, largely because the pathway ... Emmert-Streib and M. Dehmer, “Detecting pathologicalpathways of a complex disease by a comparitive analysis ofnetworks,” in Analysis of Microarray Data: A Network-BasedApproach, F. Emmert-Streib and ... important to havereasonable guarantees that a maximum has been reached.Thus, given the choice between an exact solution of a restricted class of models or an approximate solution of a general class...

Báo cáo hóa học: " Research Article A New General Iterative Method for a Finite Family of Nonexpansive Mappings in Hilbert Spaces Urailuk Singthong1 and Suthep Suantai1, 2" potx

... the American Mathematical Society, vol.4, pp. 506–510, 1953.2 S. Reich, “Weak convergence theorems for nonexpansive mappings in Banach spaces,” Journal ofMathematical Analysis and Applications, ... pagesdoi:10.1155/2010/262691 Research Article A New General Iterative Method for a Finite Familyof Nonexpansive Mappings in Hilbert SpacesUrailuk Singthong1and Suthep Suantai1, 21Department ... Excellence in Mathematics, the Thailand Research Fund, and the GraduateSchool of Chiang Mai University f or ﬁnancial support.References1 W. R. Mann, “Mean value methods in iteration,” Proceedings...

Báo cáo hóa học: "Research Article A Computationally Efﬁcient Method for Polyphonic Pitch Estimation" pdf

... our method and the best method (team “RK”) was really minor, whereas our method was approximately 13 times faster than the best method (team “RK”). The algorithm has been implemented asMatlab ... and fast constant-Q transform implementationneeds approximately 2000∗ fs. The comparison clearlysuggests that Fast RTFI implementation is also much fasterthan transform-based implementation ... implementations of such ﬁlter banks can also furtherimprove the computational eﬃciency.As a result, the overall approach is 3 times faster thanreal time on a standard PC equipped with a 2.0 GHzPentium...

Báo cáo hóa học: " Research Article A Wireless Sensor Network for RF-Based Indoor Localization" pptx

... 3LocationresolverLocationdatabaseServerData relayGUIRangingmeasurementdataSingle-hop ranging measurementsLocation nodeAnchor nodeGateway anchor nodeFigure 1: Centralized localization network architecture.distance ... scene analysisapproaches are greatly reduced by the time-consumingcollection and maintenance of the RF sample database.Searching trough the sample database or radio map is com-putationally ... their operation is not a ected. Thus,LocMAC base does not dictate the usage of LocMAC relay.LocMAC relay provides localization data aggregation andlow-latency data relay. It is primarily designed...

Báo cáo hóa học: " Research Article A Multievent Congestion Control Protocol for Wireless Sensor Networks" pptx

... uses adaptive dataaggregation in order to reduce the amount of informationtravelling through out the network rather than using a back-pressure approach to regulate source nodes transmission rateon ... packet.Therefore, data packets are piggybacked to update buﬀerstate. When a sensor x sends out a data packet, it piggybacksits residual-buﬀer size in the frame header. If a neighbor yoverhears a frame from ... Each node maintains data and schedule intervals,therefore, the operation of MCCP can be subdivided intoschedule interval and data interval operations. Each scheduleinterval is followed by a...

Báo cáo hóa học: "Research Article A Multidimensional Functional Equation Having Quadratic Forms as Solutions" pptx

... Hyers-Ulam-Rassias stability in Banach modulesover a C∗-algebra,” Journal of Mathematical Analysis and Applications, vol. 294, no. 1, pp. 196–205, 2004.[4] J H. Bae and W G. Park, “On stability ... functional equations that have the quadraticproperty,” Journal of Mathematical Analysis and Applications, vol. 222, no. 1, pp. 126–137, 1998.[6] W G. Park and J H. Bae, “On a bi-quadratic functional ... ,0(2.13)Hindawi Publishing CorporationJournal of Inequalities and ApplicationsVolume 2007, Article ID 24716, 8 pagesdoi:10.1155/2007/24716 Research Article A Multidimensional Functional Equation HavingQuadratic...

Báo cáo hóa học: " Research Article A Two-Layered Mobility Architecture Using Fast Mobile IPv6 and Session Initiation Protocol" pot

... conﬁgured CoA and the old CoA that was usedat the PAR. The NAR checks whether the newly formulatedCoA is a valid address to ensure that it has no duplicate. If thenew CoA is valid, the NAR adds it ... will acquire a care-of address in a way that a duplicate or invalid packet ad-dress is not picked.3.2. Address conﬁgurationAfter completing the layer 2 handover, address conﬁgurationmay either ... overlap that a ects the handover rather than therange of APs. From a micromobility perspective, the inte-grated scheme and FMIPv6 relatively suﬀer from the sameaverage handover delay as the WLAN...

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