complexity performance analysis of a h 264 avc video encoder

... Tagliasacchi, M Naccari, S Tubaro, and T Ebrahimi, A H. 264/ AVC video database for the evaluation of quality metrics,” in Proceedings of the IEEE International Conference on Acoustics, Speech ... different laboratories show high consistency and correlation We believe that such a publicly available database will allow easier comparison and performance evaluation of the existing and future ... in the major part of the sequence B Scores Normalization Although each subject has been trained according to the same procedure, subjects may have used the rating scale differently This behavior...

Ngày tải lên: 21/06/2014, 07:20

... exhibited by the channel [27] Also, a quasistationary channel is assumed, such that it remains time-invariant for the transmission of a full UWB packet Calculations are based upon the CM1 channel ... occupy the same chip, a collision or “hit” occurs The characterising parameters of these codes are the cardinality (Nh ), which specifies the alphabet size; and the periodicity (N p ), which indicates ... the transmitted signal which is regarded as ISI, and is referred to as the third parameter of χσ,ζ,ν This formula converges to an ISI variance within 5% of the final value when averaged over approximately...

Ngày tải lên: 22/06/2014, 19:20

... they calculated different parameters characterizing video traffic and video quality, among them the fractal parameters Also, they have pointed out the need for multifractal characterization of video ... is with B frames Migration to the right side of MF spectra at higher q p indicates the increasing of the local fractal behavior of the process We also compared the traces of H. 264/ AVC and MPEG4, ... Multifractal analysis of video traces The Hurst index is one of the possible descriptors of fractal behavior Fractal structures may be evaluated through their fractal dimension as well Practical and...

Ngày tải lên: 22/06/2014, 23:20

... diversity branches based on a criterion which we call “branch relative strength” (BRS) The BRS is the ratio of the SNR of each branch to the SNR of the best branch at the same instant of time [8]: BRSi ... that retains most of the advantages of the MRC scheme, and has been widely studied [5, 6, 7] The scheme proposed in [4] combines a fixed number of branches, say M, that have the largest instantaneous ... for his Ph.D studies, and he is currently teaching in the same university as an Adjunct Instructor He has coauthored many conference and journal papers spanning the areas of adaptive signal processing,...

Ngày tải lên: 23/06/2014, 00:20

... they save energy and have better chance of survival? How does a school of fishes swim together in formation to fool their predators? How does a swarm of army ants that can easily make up to a ... commands are sent to this layer, which in turn relay them to the physical robot and back to the source The advantage of having this layer is that it allows the client program to work with other ... Moreover, the whole system is more robust and the approach scales easily to accommodate large number of robots However, the principal drawback of this approach is that they often result in highly sub-optimal...

Ngày tải lên: 28/11/2015, 13:34

... into NALUs, which contains syntax elements of a certain class The first byte of each NALU is the header byte which indicates the data type of NALU The 1-byte NALU header has three fixed-length bit ... retransmission at data link layer within adaptation period are selected based on channel conditions such that the system throughput is adapted to variation of channel capacity with bandwidth as ... (the parameter set) without repeating that information within each VCL-NALU Parameter sets can be sent either “in-band” or “out -of- band” well ahead of the VCL-NALU that they apply to, and can...

Ngày tải lên: 26/09/2015, 11:07

... quality H. 264/ AVC video coding applications In this thesis, research work is carried out to design a hardware IP of CABAC encoder targeting at the Main profile of H. 264/ AVC The general research ... research projects have been carried out targeting at hardware design of CABAC encoder of H. 264/ AVC standard in recent years Although different approaches have been investigated to accelerate the ... of H. 264/ AVC Codec Acceleration Because computation complexity of H. 264/ AVC is significantly higher compared to the previous standards, there has been much research on accelerating H. 264/ AVC encoding...

Ngày tải lên: 10/09/2015, 15:50

... analysis is one way of evaluating the computational complexity of an algorithm, a program or a system Such analysis requires the availability of the high-level language source code such as the ... complexity of the program can be evaluated Such analyses are essential for data-dominant applications such as video multimedia applications where it has been shown that the amount of data transfer ... into the high complexity profile of H. 26L was not evaluated In [17], the complexity of the H. 264/ AVC baseline profile decoder is analyzed using a theoretical approach This approach allows the computational...

Ngày tải lên: 28/11/2015, 13:34

... blades which are attached vertically to the central shaft through support arms as shown in the Figure The support to vertical axis helps the rotor maintain its shape It is self-regulating in all ... that, for H/ D ratio 0.85, the maximum Cp obtained is 0.232 at a TSR of 2.124, and the maximum Ct obtained is 0.116 at a TSR of 1.692 And for this H/ D ratio, the standard deviation of computational ... computational maximum Ct at different H/ D ratios Figure 26 shows the comparison of the variations of computational and experimental maximum Cp values for each H/ D ratio, whereas Figure 27 shows the comparison...

Ngày tải lên: 05/09/2013, 15:28

... bandwidth utilization and bit wastage when bandwidth is adapted dynamically to map the bitrate to the available channel capacity Among the various rate allocation algorithms, “downstairs” has ... This average is the minimum bandwidth required to transmit all the frames of that step As the SP-frame has a higher bit rate than all the other frames of the step and it is the first frame of ... coding nature of the switching frames, the transition points of the “downstairs” may change that are required to be handled in such a way that the shape of “downstairs” is preserved and, i.e., a monotonically...

Ngày tải lên: 20/06/2014, 22:20

... Research Laboratory, The Olivetti & Oracle Research Laboratory Face Database of Faces, http://www.cam-orl.co.uk/facedatabase.html [18] I Koren, Computer Arithmetic Algorithms, A K Peters, Natick, ... using MATLAB and Very high speed integrated circuit Hardware Description Language (VHDL) Finally the analytical (MATLAB) results are compared with the experimental (VHDL) results Detecting a face ... reduce hardware costs, yet maintain an application’s overall accuracy A maximum relative representation error (MRRE) [18] is used as one of the indices of floating-point arithmetic accuracy, as shown...

Ngày tải lên: 21/06/2014, 20:20

... (1/4)(|s|) hexagons, each containing 16 search points Extended hexagon search has search points Diamond search has search points search pass The search type is modified SUMH However we can expand our architecture ... Search pass 1: left horizontal scan of cross search Search pass 2: right horizontal scan of cross search Search pass 3: top vertical scan of cross search Search pass 4: bottom vertical scan of ... yielding a total of 2s search points Thus the algorithm complexity of this search step is O(2s) (2) Hexagon and extended hexagon search: There are search points each in both of these search steps,...

Ngày tải lên: 21/06/2014, 20:20

... and more accurate than [8] Although this approach has advantage in terms of computational complexity, it still has nontrivial approximation errors compared to our approach More detailed comparison ... we have shown that with weighting matrices W1 and W2 to compensate for the different norms of HT, inverse HT and H. 264/ AVC quantization design, we can calculate the SSD distortion in the HT domain ... From the above analysis, it is apparent that the proposed transform-domain distortion calculation is more efficient than the traditional pixel-domain approach It should also be noted that the proposed...

Ngày tải lên: 22/06/2014, 19:20

... of Technical Staff Later, he was later promoted as a technology leader and a program manager at Sarnoff For his work in the encoder and MPEG-4 areas, he received two Sarnoff achievement awards and ... provide the highest throughput with the lowest complexity The rationale is that H. 264/ AVC defines a set of MBs to the slice group map types according to the adaptive data partition [1] The concept of ... However, this is not the case for the H. 264/ AVC standard To our best knowledge, all the state-ofthe-art transcoding schemes with H. 264 as input bitstream format perform the fast algorithms in the pixel...

Ngày tải lên: 22/06/2014, 19:20

... and localization capabilities of the system The main disadvantage of RoHC is the increased processing delay at routers, which leads to endto-end delays However, as shown in several other techniques ... his studies, he held teaching and research assistantship positions with the Electrical and Computer Engineering Department of the Aristotle University of Thessaloniki He was also a Postgraduate ... Section The average values of Tl and Th are 0.7 and 1.1, respectively It is worth noting that these threshold values are used only for the initial classification of the optimization algorithm of Section...

Ngày tải lên: 22/06/2014, 23:20

... these areas may offer only little advantage Attributes that are rated high in importance and low in performance are areas that the providers should pay particular attention for improvement Lastly, ... local cuisine, mountains and hills, spa, temples and various accommodation options available in Kerala falls in the quadrant which represents high importance and high performance These are the ... ways of living Aranmula is famous for its ‘metal mirror’ and boat race There are also institutions like the Vaastu Vidya Gurukulam, which gives training in vaastu shastra and a school for Mohiniattam...

Ngày tải lên: 01/08/2014, 10:25

... approach, the channel estimate can be modelled as ˆ h= h+e (4.2) where h is the actual channel gain and the error term e is a zero mean complex Gaussian variable with variance inversely proportional ... unified approach to evaluating the performance of STBC in the presence of channel estimation error with both spatial and temporal correlation, as well as with different modulation schemes CHAPTER ... channel estimation can be analyzed using quadratic form of a CGRV Later we will show that this approach can even be applied in the case of imperfect channel estimation 4.3 Quadratic Form of a CGRV...

Ngày tải lên: 26/09/2015, 10:51

... chất lượng ảnh với tỉ số nén + Tách riêng h nh tham khảo h nh hiển thị: tiêu chuẩn trước có phụ thuộc h nh tham khảo h nh hiển thị, H. 264/ AVC mã h a chọn h nh ảnh để tham khảo gần với h nh ảnh ... cao hiệu suất chất lượng H. 264/ AVC cho phép sử dụng tối a 32 frame tham khảo MPEG-2 sử dụng frame tham khảo mang tính chất chu kỳ Bù chuyển động với nhiều h nh tham khảo chậm q trình mã h a giải ... chia thành loại sau: + Có dư th a thơng tin khơng gian: điểm ảnh lân cận phạm vi ảnh hay khung video, gọi th a tĩnh bên frame + Có dư th a thơng tin thời gian: điểm ảnh khung video chuỗi ảnh video, ...

Ngày tải lên: 25/04/2013, 11:14

... Electroanal Chem 1998;251(2):275295 [15] Sampath Yerramalla, Asad Davari, Ali Feliachi and Tamal Biswas, Modeling and simulation of the dynamic behavior of a polymer electrolyte membrane fuel ... K.S Dhathathreyan, P Sridhar, G Sasikumar, K.K Ghosh, G Velayutham, N Rajalakshmi, C.K Subramaniam, M Raja and K Ramya, Development of polymer electrolyte membrane fuel cell stack Int J Hydrogen ... (kg/mol) Pa , Pc total pressure of anode and cathode, respectively (atm) * * PH , PO2 partial pressure of hydrogen and oxygen at the anode catalyst / gas interface and cathode catalyst / gas interface,...

Ngày tải lên: 05/09/2013, 14:58

... wind farm To understand the behavior of the variables involved in economical and financial assessing of a wind farm as a manner of validating the indicators of attractiveness and risk of energy ... investor/project manager Note that the average NPC and TLCC is € 87,305,705, with a standard deviation of 0.33%, so we have the same analysis of the TLCC, even with a different methodology of calculation; ... Climate Database and Retscreen Product Database for the characterization of the wind system, both available at the RETScreen Version Software for evaluation of projects in renewable energy The parameters...

Ngày tải lên: 05/09/2013, 14:59