v Research Article Are the Wavelet Transforms the Best Filter Banks for Image Compression?" pdf
v Research Article Are the Wavelet Transforms the Best Filter Banks for Image Compression?" pdf
... than the wavelet filter bank for image Ta r ge t. For all other images the wavelet and gainoptimized filter banks perform equally well. Comprehensivecoding results for a number of filter banks ... pagesdoi:10.1155/2008/287197 Research Article Are the Wavelet Transforms the Best Filter Banks for Image Compression?Ilangko Balasingham1, 2and Tor A. Ramstad21Interventional Center, Rikshospitalet University ... −8.1945852608329e-01−8.6034899062052e-01tive and subjective evaluations were used to select the system for further development. We do not have resources to per-form a comprehensive subjective test. Let us rather inspectsome images...
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báo cáo hóa học:" Research Article Real-Time Multiview Recognition of Human Gestures by Distributed Image Processing" pdf
... group. Apparently, there is little correlation between the average recognition rate and the average/variance ofaveraged evaluation scores. But the variance of averagedevaluation scores for Experiment ... C (the number in parenthesis means the number of image frames)Gesture set in group B (the number in parenthesis means the number of image frames)Gesture set in group A (the number in parenthesis ... are used for the learning. And the similar samples that are evidently lessdistinct and more ambiguous than the samples in ViHASi image database are used during the test. Nevertheless, the results...
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Báo cáo hóa học: "Research Article A Patch-Based Structural Masking Model with an Application to Compression" pdf
... wood. (b) Average TvC curve for structures and individual TvC curves for baby and pumpkin.(c)Average TvC curves for edges and individual TvC curves for butterfly and sail. In each graph, the horizontal ... depicts the averageresults for textures along with individual TvC curves for images fur and wood. Figure 9(b) depicts the average results for structures along with individual TvC curves for imagesbaby ... other’s standard deviation as well within as the standard deviation of the average threshold for edges.These data therefore suggest that at very low mask contrasts,in the regime in which the...
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Báo cáo hóa học: " Research Article Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems" pdf
... U,where the columns of U are the MTdominant left singularvectors of the full channel matrix H. Therefore, the entries of the transformation matrix A will beaij=uijif i ∈ Sj0 otherwise,(35)with ... chi-squared variates with 2MRde-grees of freedom. The equality holds in the “very artificialcase” when the transmitted signal vector components are conveyed over MT“channels” that are uncoupled ... for the same value of K,itis evident that RHC-ASF delivers capacity performance veryclose to RS-ASF. Therefore, the expensive variable gain-linearamplifiers can be abolished from the design of...
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Báo cáo hóa học: " Research Article A Comparative Analysis of Kernel Subspace Target Detectors for Hyperspectral Imagery" pdf
... along the tree line, as shownin the sample band images in Figure 3. The detection per-formance of the DR-II and FR-I images was provided inboth the qualitative and quantitative the receiver ... to have zero mean. The estimated covariance matrix in the feature space is g ivenbyCφ=1NXφXTφ. (A.1) The PCA eigenvectors are computed by solving the eigen-value problem v φ=Cφ v φ=1NNi=1φxiφxiT v φ=1NNi=1φ(xi), ... Figures 6 and 7 show the ROC curve plots for the kernel-based and conventional de-tectors for the DR-II and FR-I images; in general, the kernel-based detectors outperformed the conventional detectors....
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Báo cáo hóa học: " Research Article Development and Evaluation of High-Performance Decorrelation Algorithms for the Nonalternating 3D Wavelet Transform" pdf
... relevant research efforts have been reportedlately for the wavelet transform. Thulasiraman et al. have de-veloped a multithreaded algorithm for computing the 2D wavelet transform [13]. The authors ... wavelet transform, Kutil and Uhl haveconducted a study of the software and hardware needs of the 3D wavelet transform [14]. They have centered their study on the classic wavelet transform and conducted ... results are very promising, the unavailability of a complete (hardware/software) fine coarsesystem leaves open the debate on the overall performancegains of such systems.Regarding the 3D wavelet...
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Báo cáo hóa học: "Research Article Discrete-Time Modelling of the Moog Sawtooth Oscillator Waveform" doc
... using the estimated value of model parameter P.InFigures5(a)and 5(b), the waveform and the spectrum of the PD model are drawn, respectively, together with the waveform and the spectral envelope ... sawtooth waveform having the fundamental frequency f0= 220.62 Hz. The spectrum of the waveform isshown in (b) together with the approximately−6 dB per octave spectral envelope of the textbook ... where the waveform and the spectrum of the Minimoog Voyagersawtooth output are plotted for f0= 2.096 kHz. There are small differences in the waveforms (compare Figures 1(a)and 2(a)), but the differences...
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Báo cáo hóa học: " Research Article Fast Signal Recovery in the Presence of Mutual Coupling Based on New 2-D Direct Data Domain Approach" pdf
... this paper, the problems of 2-D D3LS algorithms werestudied for recovering of the signal in the presence of mutualcoupling and driving a new formulation to recover the signalin the presence ... andvery expensive [18]. Some other researches suggested self-calibration adaptive algorithms for damping the MC effect[19–21].In this paper, a new adaptive algorithm was proposed for the fast ... have considered the effect ofmutual coupling or any other array errors [12]. Besides,most of these proposed adaptive algorithms are based on the covariance matrix of the interference. However,...
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Báo cáo hóa học: " Research Article Multicarrier Communications Based on the Affine Fourier Transform in Doubly-Dispersive Channels" pot
... can beobserved that the interference power for the AFT-MC systemwith the GI even for the extremely high aircraft velocity of v = 400 m/s can be below −40 dB. Note that even without the GI interference ... obtained for the OFDM and AFT-MC system withand without the GI in the en-route scenario for differentT and aircraft velocity v = 400 m/s. From Figure 4 itcan be observed that even without the GI, the ... doubly-dispersive channels.Upper and lower bounds on the interference in the AFT-MC system are obtained. These bounds are generalizationsof results for the OFDM from [3] and for the AFT-MC with the GI...
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Báo cáo hóa học: " Research Article Simple Statistical Analysis of the Impact of Some Nonidealities in Downstream VDSL with Linear Precoding" doc
... the output of the frequency-domainequalizer (FEQ) at the receiver; such information flows from the VDSL2 Transceiver Unit at the remote side (VTU-R) to the vectoring control entity (VCE) at the ... the dispersion around the mean, for all lengths,is very limited, so that the average value gives a very goodapproximation of the true value.Finally, Ta bl e 3 shows the average bit rates for ... beyond the mere evaluation of the average values, for example to analyze the dispersion around the mean.In this case, the presented approach permits to derive, bysimulation, the plots of the cumulative...
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