image retrieval in frequency domain using dct coefficient histograms

... USA, 1995 [43] L Zhang, F Lin, and B Zhang, “Support vector machine learning for image retrieval, ” in Proceedings of IEEE International Conference on Image Processing (ICIP ’01), vol 2, pp 721–724, ... Zaji´ , I Reljin, c c c and B Reljin, “An image retrieval system with user’s relevance feedback,” in Proceedings of the 7th International Workshop on Image Analysis for Multimedia Interactive Services ... number of nondominant components can produce the masking effect, inhibiting the in uence of dominant components, leading thus to the false decision These facts are taken into account in our CBIR system...

Ngày tải lên: 22/06/2014, 20:20

... Systems in Academic Domain using Social Network Analysis Approach Rating/interesting items Community 59 Identifying users who have similar interests a U1 b c a Collaborative Filtering algorithms U1 ... recommendation in the grocery shopping domain Their proposed method extends the basic random walk model by calculating the product similarities through a weighted Recommender Systems in Academic Domain using ... Systems in Academic Domain using Social Network Analysis Approach 10 11 12 13 14 15 16 17 18 19 20 21 65 experiences in addressing the problem of conflict of interest detection In: Proceedings of...

Ngày tải lên: 09/10/2015, 08:37

... α)VM , (2.46) where η is the intrinsic impedance of the medium in region and ≤ α ≤ 2.3 Solving Combined Field Integral Equation using Adaptive Integral Method Direct solving of the MoM matrix equation ... at all frequencies In solving for the solution of CFIE using AIM, a novel memory saving testing scheme is presented This new scheme permits the solving of CFIE with AIM using the same amount ... potential in eq(2.27) everywhere within he computational domain, then by testing the field at specific domain of the ith testing function has the same effect as the previous case mentioned We can that in...

Ngày tải lên: 11/09/2015, 16:06

... phenomena that are involved in determining answerhood Our work suggests that considerable gains in performance can be obtained by incorporating TE during both answer processing and passage retrieval While ... textual entailment information when identifying answers to questions Results from this baseline are presented in Table Creating New Sources of Training Data In order to obtain more training data for ... clustered using complete-link clustering using a technique proposed in (Barzilay and Lee, 2003) 3.3 by incorporating features from TE into a Q/A system which employs no other form of textual inference,...

Ngày tải lên: 08/03/2014, 02:21

... 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 ... 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 is ... oversampling in time domain is not necessary since the aliasing components will be removed in the same way as the cross-terms More details about the Smethod can be found in [14, 15] Comparing to...

Ngày tải lên: 21/06/2014, 22:20

... further transformed to the time domain using an N point IDFT where decoding and detection take place In the following, we first briefly review the achievable sum rate in the OFDMA system and then ... usually referred to as localized mapping and the latter distributed mapping This paper investigates the achievable information rate using SC-FDMA in the uplink We present a framework for analytical ... described by the Q × N sub-carrier mapping matrix M with the entry Performing multi-carrier demodulation using FFT and subcarrier demapping using MH , we obtain the received block r = MH FQ y =...

Ngày tải lên: 21/06/2014, 23:20

... proposed metric Finally, conclusions are drawn in Section A COLOR IMAGE DESCRIPTOR: A STATISTICAL SIGNATURE In order to retrieve visually similar images to a query image using color information, ... And a signature is appropriate for describing each image independently of other images in an image database In this paper, we represent an original color image by a statistical signature defined ... perception (8) In certain cases, a user may have a partial information of the target images as the query, or wants to extract all the images including partial information of the query In these cases,...

Ngày tải lên: 22/06/2014, 00:20

... building using the multifeature combination metric and using single descriptors Figure 9: Precision-recall curves for concept cloud using the multifeature combination metric and using single ... concept grass using the multifeature combination metric and using single descriptors Figure 11: Precision-recall curves for concept lion using the multifeature combination metric and using single descriptors ... combining the output of five different expert classifiers trained using three different low-level features In the system introduced in [12], several low-level image primitives were combined in a...

Ngày tải lên: 22/06/2014, 06:20

... corresponding time domain processing In this paper, an original frequency domain detector (FDD) for UWB impulse radio (UWB-IR) short-range downlink communications will be proposed and simulated in an ... received the Dr Ing degree in electronics engineering in 1996 and the Ph.D degree in information and telecommunication engineering in 2000 from the University of Firenze, Firenze Since 1999, he ... Processing Magazine, vol 21, no 6, pp 26–54, 2004 Tiziano Bianchi was born in Prato, Italy, in 1976 He received the M.S degree (Laurea) in electronic engineering in 2001 and the Ph.D degree in information...

Ngày tải lên: 22/06/2014, 22:20

... performed using time -frequency masking method of [8] (vi) Perform an inverse STFT using the associated frequencies for each of the sources Since the mixing matrix can be determined only up to a scaling ... demonstrated in Section Finally, our conclusions are presented in Section BACKGROUND The problem of multiple-acoustic-source separation using multiple microphones has been intensively investigated during ... formulation Since the problem consists of finding an inverse matrix to the model x = As, any solution of this problem is possible only by using some prior information of A and s Considering a pairwise independence...

Ngày tải lên: 22/06/2014, 23:20

... fuzzified inputs Fuzzy OR operator Fuzzy implication Aggregation of output using max operator Defuzzification using centroid method over q-point interval for computing — — Add and sub e2 for computing ... considered in the presence of frequency- selective multipath fading Users ∼ Kintra are assumed to be users in the active cell and users ∼ Kinter are the intercell interferers The spreading sequence ... interest, say of user 1, is the user to be acquired in the presence of intersymbol interference (ISI) and multiple-access interference (MAI) The information about the in- cell and inter-cell interferers...

Ngày tải lên: 22/06/2014, 23:20

... Accurate tracking of the region separation boundary in the coordinate domain setup or transition profile propagation in the transform domain setup allowed to achieve image denoising results that ... levels or in the nondecimated wavelet transform domain [23] using edge process (EP) model This assumption and the EP model have been used in our previous work in image denoising where promising results ... transition in the coordinate domain Besides, the magnitudes of principle peaks (maximum and minimum values of the data in the vicinity of transition in the nondecimated domain) of the components...

Ngày tải lên: 22/06/2014, 23:20

... one sensor by minimizing a mean square error (minimal distortion principle) [8] This can be realized in the frequency domain by multiplying the outputs by the inverse of the unmixing matrix [9, ... “Permutation alignment for frequency domain ICA using subspace beamforming methods,” in Proceedings of the 5th International Conference on Independent Component Analysis and Blind Signal Separation ... determined in [16] by sorting the similarity in an increasing order In [9], the correlation is tested at each frequency bin and the sum of the aligned frequencies is taken as a reference In the...

Ngày tải lên: 22/06/2014, 23:20

... flow of BSS in the frequency domain Each convolutive mixture in the time domain is converted into multiple instantaneous mixtures in the frequency domain Therefore, we can apply an ordinary ICA ... is a parameter indicating the importance of maintaining the predetermined scaling With the Hanning window, the error after the scaling adjustment is easily calculated by substituting (28) for (25): ... Hanning 1024 points (128 ms) 256 points (32 ms) InfoMax (complex-valued) correlation-based method to the remaining frequency bins The permutation problem is solved simply by using the geometric information...

Ngày tải lên: 22/06/2014, 23:20

... degree in electrical engineering from HoHai University, Nanjing, China, in 1996, and his M.S degree in information technology from Tampere University of Technology (TUT), Tampere, Finland, in 2001, ... the Institute of Communications Engineering at TUT, pursuing towards the doctoral degree His main research interests are digital signal processing algorithms for multicarrier and frequency domain ... receiver is absent since it can be realized together with the equalizer in the frequency domain [1] In the case of SSE, the folding is carried out before equalization, where the folding frequency is...

Ngày tải lên: 22/06/2014, 23:20

... design, based on a Hamming window, are given in [6] The experimental frequency domain SNR, that is, the ratio of total frequency domain signal power to total frequency domain error power, is plotted ... domain SNR Experimental time domain SNR Experimental frequency domain SNR 101 102 103 K (bins) Theoretical ideal FB Theoretical frequency domain SNR Experimental time domain SNR Figure 7: Reconstruction ... errors in a frequency domain SNR measure In some applications, this may be the most appropriate measure of quality In others, including conventional equalisers and That is, the number of bins in...

Ngày tải lên: 23/06/2014, 01:20

... spatial, intensity, and texture centers, using an initial clustering procedure These values are to be used by the KMCC algorithm Stage Conditional filtering using a moving average filter Stage Final ... user-friendly retrieval of color images, combining a number of image processing and machine learning tools, such as a time-efficient and unsupervised segmentation algorithm, a simple ontology defining intermediate-level ... and M G Strintzis, “Content-based watermarking for indexing using robust segmentation,” in Proc 3rd European Workshop on Image Analysis For Multimedia Interactive Services, Tampere, Finland, May...

Ngày tải lên: 23/06/2014, 01:20

... of the details in each image, any degradation in image quality can impact the quality of registration The aperture effect is introduced in regions of flat intensity within the images When there ... errors in image registration Artifacts in the 4D CTs, the aperture effect [18], and the inherited occlusion problem [19] all introduce potential sources for error in image registration In our ... restoration of images IEEE Trans Pattern Analysis Machine Intell 1984, 6:721-741 20 Guerrero T, Zhang G, Huang T-C, Lin K-P: Intrathoracic tumour motion estimation from CT imaging using the 3D optical...

Ngày tải lên: 09/08/2014, 08:23

... pixel value in an image:  Notice that (substitute u = v = in the definition): 48  Differentiation: (Only in continuous -domain) : Derivatives are normally used for detecting edged in an image An ... the size of the box increases in spatial domain, the corresponding “size” in the frequency domain decreases 13 f(x,y) |F(u,v)| 14 F(u,v) 15 g(x,y) |G(u,v)| 16 G(u,v) 17  Image formed from magnitude ...   The concept of filtering is easier to visualize in the frequency domain Therefore, enhancement of image f(m,n) can be done in the frequency domain, based on its DFT F(u,v) This...

Ngày tải lên: 26/01/2015, 10:06