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

... Corporation EURASIP Journal on Advances in Signal Processing Volume 2007, Article ID 63281, 13 pages doi:10.1155/2007/63281 Research Article A Secret Image Sharing Method Using Integer Wavelet Transform Chin-Pan ... when images at low bit rate are recovered. Wang and Su [5] developed a secret image sharing method based on the Galois field. It has the advantage o...

Ngày tải lên: 22/06/2014, 20:20

... Because of its data reduction capability, DWT has become a standard method in the image compression applications. In the wavelet compression, the image data is transformed and compressed as a ... ratios and image quality even at low bit rates. 1. Introduction Raw or uncompressed multimedia data such as graphics, still images, audio, and video requires substantial storage capacit...

Ngày tải lên: 21/06/2014, 05:20

... operation Extracting operation Pattern pairs Predicted image 2. Pattern matching 4. Reversible data hiding Pattern pairs image Grayscale image grayscale image Selected LUT templates 3. LUT template ... Introduction Inverse halftoning is a process which transforms halftone images into grayscale images. Halftone images are binary images that provide a rendition of grayscale images a...

Ngày tải lên: 21/06/2014, 08:20

... experimental data, and some advantage to a pathway modelling approach to this problem is reported. 1. Introduction Graphical models play a central role in modelling genomic data, largely because the pathway ... Emmert-Streib and M. Dehmer, “Detecting pathological pathways of a complex disease by a comparitive analysis of networks,” in Analysis of Microarray Data: A Network-Based App...

Ngày tải lên: 21/06/2014, 11:20

... the American Mathematical Society, vol. 4, pp. 506–510, 1953. 2 S. Reich, “Weak convergence theorems for nonexpansive mappings in Banach spaces,” Journal of Mathematical Analysis and Applications, ... pages doi:10.1155/2010/262691 Research Article A New General Iterative Method for a Finite Family of Nonexpansive Mappings in Hilbert Spaces Urailuk Singthong 1 and Suthep Suantai 1,...

Ngày tải lên: 21/06/2014, 11:20

... 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 as Matlab ... and fast constant-Q transform implementation needs approximately 2000 ∗ f s . The comparison clearly suggests that Fast RTFI implementation is also much faster than transform-based implement...

Ngày tải lên: 21/06/2014, 19:20

... 3 Location resolver Location database Server Data relay GUI Ranging measurement data Single-hop ranging measurements Location node Anchor node Gateway anchor node Figure 1: Centralized localization network architecture. distance ... scene analysis approaches are greatly reduced by the time-consuming collection and maintenance of the RF sample database. Searching trough the sample database or...

Ngày tải lên: 21/06/2014, 22:20

... uses adaptive data aggregation in order to reduce the amount of information travelling through out the network rather than using a back- pressure approach to regulate source nodes transmission rate on ... packet. Therefore, data packets are piggybacked to update buffer state. When a sensor x sends out a data packet, it piggybacks its residual-buffer size in the frame header. If a neig...

Ngày tải lên: 21/06/2014, 23:20

... Hyers-Ulam-Rassias stability in Banach modules over 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 quadratic property,” 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-quadrati...

Ngày tải lên: 22/06/2014, 11:20

... configured CoA and the old CoA that was used at the PAR. The NAR checks whether the newly formulated CoA is a valid address to ensure that it has no duplicate. If the new 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 configuration After completing the layer 2 handover, address configurati...

Ngày tải lên: 22/06/2014, 19:20