Báo cáo hóa học: "Efficient Video Transcoding from H 263 to H 264/AVC Standard with Enhanced Rate Control" pot

... inferior to that obtained by the H. 264/AVC RC scheme both with and without downscal- ing, while the total encoding time of scheme (II) is reduced by a factor of about 6 compared with that of the H. 264/AVC RC ... the entire sequence. Figure 12 shows the frame -to- frame PSNR results of the Foreman sequence obtained by the H. 264/AVC RC method and the proposed fast transcoding...

Ngày tải lên: 22/06/2014, 23:20

... compensate these mod- ifications, the resulting scaling factors have to be applied to D c 0 or to the scaling multipliers in the case of the lattice struc- ture. Furthermore, in the ELT structure, the ... IDFT. Although two IDFTs have been reduced to a single one, each polyphase filter still has to be realized twice. However, the same input signals apart from a possible delay are fe...

Ngày tải lên: 22/06/2014, 23:20

... 1-cycle or to a limit 2-cycle and, we find the exact regions of attraction for these cycles depending on the size of the threshold. In particular, we show that when the threshold is either small ... Ω 4 . Therefore, in the fourth, sixth, seventh, and the eigth cases, we may use the conclusions in the other cases to conclude our proof. The proof is complete. Theorem E Suppose that λ  c/1...

Ngày tải lên: 21/06/2014, 11:20

... comparing the same stimuli with and without inhibition, the data show that the sequence G  S is not permuted by the application of the inhibitor, then the phosphorylation data with inhibition ... stimulation), then the data are consistent with a functional network where the pathways from the receptors (for all stimuli in S) to the protein merge together before any effect from the...

Ngày tải lên: 21/06/2014, 02:20

... tool support exhibits several “gaps,” that is, parts of the design process which are critical, yet for which no automated tools are available. Although they have high impact on the rest of the ... tools. An added bonus of this approach is the open nature of the interface format to the Milkyway database, al- lowing third-party EDA tools to be integrated into the tool chain, if these adhere...

Ngày tải lên: 22/06/2014, 22:20

... (DECT) standard [3]cansupporta bit rate of 500 kbps per user (with 64-QAM as modulation scheme). The high data rates offered by the standard could be used to offer a shared downlink. With this data rate, transmission ... DECT standard. The mDECT-SB scheme thus provides a simple and efficient way to provide low bit -rate channels in addition to the high bit- rate channels of I...

Ngày tải lên: 22/06/2014, 22:20

... order of the modulator. The second term of the right-hand side of (1) is the signal term while the first term represents the quantization noise resulting from the modulator. The objective is to design ... neces- sary for the demodulator to have a finite bandwidth so that the desired signal can pass through the filter. In the case of optimum FIR filter design, the filter length is selected as...

Ngày tải lên: 22/06/2014, 23:20

... verified as from the same finger if their matching score is higher than a certain threshold. According to the descriptions of the matching algorithm, the template, which is stored in the embedded ... for these two cases. The x-axis is the FRR and the y-axis shows the FAR. After analyzing the result, we define the number of neighbors as 6 and the marked neighbor pair threshold TH A is set to...

Ngày tải lên: 22/06/2014, 23:20

... order to track the variations of the channel. Moreover, here the DFE is ex- tended to operate on the time-reversed signal. The scheme of TV-FD-DFE is shown in Figure 3.The blocks with dashed lines ... − 1, (9) while for the time-reversed TV-FD-DFE (9) holds with the index (D) substituted with (I). The coefficients of the FF filter are computed for each block, in order to track the ch...

Ngày tải lên: 22/06/2014, 23:20

... 7 H − k−Q/2 (h k ) Π − (h k , h (p) k ) H − k−Q/2−1 (h k ) h (1) k,(k,k −Q/2) h II k+1 h (c) k V(θ 1 ) h ∗ h k H − k (h k ) Π − (h k , h (c) k ) H − k−1 (h k ) h I k+1 h (1) k,(k −1,k−Q/2−1) h (p) k V(  θ 1 ) Figure ... expres- sion: P H − ι (h k ) (h) = ⎧ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎩ h+ −g ι  h k  +  h k h  T ∇g ι  h k    ∇ g ι  h k  ...

Ngày tải lên: 22/06/2014, 23:20