temporal prediction and motion estimation
Tài liệu 54 Video Scanning Format Conversion and Motion Estimation pdf
Ngày tải lên :
27/01/2014, 03:20
... terminology a motion detector controls δ3 , an edge detector δ1 , and δ2 , while a motion estimator can be applied to determine δ1 , δ2 , and δ3 Algorithms with a Motion Detector To detect motion, ... consecutive images These motion estimation methods therefore shall be discussed more extensively in the next section 54.5 Motion Estimation This section provides an overview of motion estimation algorithms ... determines such aspects as stationary and dynamic resolution, motion portrayal, aliasing, scanning structure visibility, and flicker Various formats have been designed and standardized to strike a particular...
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Báo cáo hóa học: " Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung" docx
Ngày tải lên :
21/06/2014, 08:20
... pattern for spatial high-frequency band, that is, edge pixels However, the motion estimation is used for interframe prediction and temporal high-frequency band should be mainly treated carefully ... ME is an adjustable motion estimation whose subsampling ratio can be tuned by the motion- level detection The dash-lined region is the proposed motion estimation algorithm and the proposed algorithm ... with the motion- level of video sequence When the interframe variation becomes high, we consider the motion- level of interframe as the fast -motion and apply low subsample ratio for motion estimation...
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Báo cáo hóa học: " Research Article An Analog Processor Array Implementing Interconnect-Efficient Reference Data Shift and SAD/SSD Extraction for Motion Estimation" ppt
Ngày tải lên :
21/06/2014, 22:20
... performance of other proposed motion estimation processors, and finally some conclusions are drawn in Section Analog Motion Estimation Array Variable block-size motion estimation is based on comparing ... further handling and storage, also the data communication with an external motion estimation core should be digital This enables high-speed I/O operations and makes a separate analog motion estimation ... performance of the proposed motion estimation approach in practice The chip enables the evaluation of the motion estimation operations within a [8,8] search range and a 16 × 16 maximum block...
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Báo cáo hóa học: "Motion Estimation and Signaling Techniques for 2D+t Scalable Video Coding" doc
Ngày tải lên :
22/06/2014, 23:20
... memory bandwidth and the computational complexity according to the complete-to-overcomplete (CODWT) algorithm described in [20] 2.1 Fast in-band motion estimation The wavelet in-band prediction ... fast motion estimation in 2D+t schemes is not thoroughly investigated in the literature References [21, 22] propose similar algorithms for in-band motion estimation In both cases different motion ... A and B are two successive frames and WB→A (·) is a motion warping operators that warps frame A into the coordinate system of frame B L and H are, respectively, the low-pass and high-pass temporal...
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Báo cáo hóa học: " Fast Motion Estimation and Intermode Selection for H.264" pptx
Ngày tải lên :
22/06/2014, 23:20
... fast block motion estimation, ” IEEE Transactions on Circuits and Systems for Video Technology, vol 12, no 5, pp 349–355, 2002 [8] Z Chen and Y He, “Fast Integer and Fractional Pel Motion estimation, ” ... fast motion estimation and interprediction method enable the H.264/AVC coder to be effectively adopted for the mobile video communication REFERENCES [1] T Wiegand, G J Sullivan, G Bjntegaard, and ... 6, and as candidate modes Yes For each 16 ¢ 16 sub-MB, check if it is homogeneous No Select intermodes 2, 3, and as candidate modes Yes Select mode Perform ME and intermode decision using candidate...
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A linear prediction approach to dimensional spectral factorization and spectral estimation
Ngày tải lên :
11/11/2015, 04:35
... class of minimum-phase FIR prediction error filters and positive prediction error variances, and the class of finite duration reflection coefficient sequences and positive prediction error variances ... and strictly positive on the unit circles), we can prove that the prediction error filter is analytic in the neighborhood of the unit circles (and therefore stable) and that it has a causal and ... theory and computational techniques of time-series linear prediction to two-dimensional (2-D) random processes 2-D random processes are encountered in image processing, array processing, and generally...
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Tài liệu Chapter 6: Force and Motion II docx
Ngày tải lên :
13/12/2013, 05:15
... the crate does not move We push harder (frame c) and harder (frame d) and the crate still does not move Finally we push with all our strength and the crate moves (frame e) The free body diagrams ... also increases and the crate remains at rest When F reaches a certain limit the crate "breaks away" and accelerates to the left Once the crate starts moving the force opposing its motion is r called ... direction of motion (for kinetic friction) or of attempted motion (in the case of static friction) Note 2: The coefficient µk does not depend on the speed of the sliding object (6-4) Drag force and terminal...
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Tài liệu Chapter 5: Force and Motion pdf
Ngày tải lên :
13/12/2013, 05:15
... other hand we slide the same object on a very slippery surface such as ice, the object will travel a much larger distance before it stops Newton checked his ideas on the motion of the moon and the ... forces act on a body (say FA , FB , and FC ) the net force Fnet r r r r r r r r is defined as: Fnet = FA + FB + FC i.e Fnet is the vector sum of FA , FB , and FC Force: The concept of force was ... act on a body r r r r (say FA , FB , and FC ) the net force Fnet r r r r is defined as: Fnet = FA + FB + FC r i.e Fnet is the vector sum of r r r FA , FB , and FC (5-3) F mo ao F mX Mass: Mass...
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Tài liệu Advances in Robot KinematicsMechanisms and Motion Edited byJADRAN pdf
Ngày tải lên :
13/02/2014, 09:20
... Kazerounian and Rastegar, 1992, Martinez and Duffy, 1995, Larochelle and McCarthy, 1995, Etzel and McCarthy, 1996, Gupta, 1997, Tse and Larochelle, 2000, Chirikjian, 1998, Belta and Kumar, 2002, and Eberharter ... as yaw, pitch and roll angles, v = (vx , vy , vz ) and ω = (ωx , ωy , ωz ) are the translational and rotational velocities of p, respectively; and θA and ωA are the orientation and angular velocity ... model is simply z4 (t) = θA (t) + δz4 (t) (8) Eqs and constitute our motion prediction model f (x, αA , δx) Eqs and complete our measurement prediction model h(x, δz) Now, an Extended Kalman...
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Advances in Robot KinematicsMechanisms and Motion pdf
Ngày tải lên :
05/03/2014, 17:20
... Kazerounian and Rastegar, 1992, Martinez and Duffy, 1995, Larochelle and McCarthy, 1995, Etzel and McCarthy, 1996, Gupta, 1997, Tse and Larochelle, 2000, Chirikjian, 1998, Belta and Kumar, 2002, and Eberharter ... as yaw, pitch and roll angles, v = (vx , vy , vz ) and ω = (ωx , ωy , ωz ) are the translational and rotational velocities of p, respectively; and θA and ωA are the orientation and angular velocity ... model is simply z4 (t) = θA (t) + δz4 (t) (8) Eqs and constitute our motion prediction model f (x, αA , δx) Eqs and complete our measurement prediction model h(x, δz) Now, an Extended Kalman...
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Báo cáo khoa học: "Joint and conditional estimation of tagging and parsing models∗" docx
Ngày tải lên :
08/03/2014, 05:20
... Lari and S.J Young 1990 The estimation of Stochastic Context-Free Grammars using the Inside-Outside algorithm Computer Speech and Language, 4(35-56) Andrew McCallum, Dayne Freitag, and Fernando ... in an LR parser) The isomorphism between shift-reduce parses and standard parse trees is well-known (Hopcroft and Ullman, 1979), and so is not described here A (joint) shift-reduce parser is ... difference between maximum likelihood estimation and maximum conditional likelihood estimation for three different kinds of models: PCFG parsers, HMM taggers and shift-reduce parsers The results...
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Báo cáo khoa học: "Trace Prediction and Recovery With Unlexicalized PCFGs and Slash Features" pptx
Ngày tải lên :
17/03/2014, 04:20
... compares the empty category prediction results of our parser with those reported in Johnson (2001), Dienes and Dubey (2003b) and Campbell (2004) In terms of recall and f-score, our parser outperforms ... with those reported in Johnson (2001), Dienes and Dubey (2003b), Dienes and Dubey (2003a), and Campbell (2004) Our parser achieves the highest precision and f-score Campbell (2004) reports a higher ... particularly well on NP *, *U*, and WHNP 0, whereas our system Table 4: Differences between the baseline f-scores for labeled bracketing, EC prediction, and coindexation (CI) and the f-scores without...
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Báo cáo khoa học: " Parsing the Wall Street Journal using a Lexical-Functional Grammar and Discriminative Estimation Techniques" doc
Ngày tải lên :
23/03/2014, 20:20
... randomly extracted from section 23 of the WSJ treebank and given gold-standard f-structure annotations according to our LFG scheme, and (ii) 500 sentences from the Brown corpus given gold standard ... dene a gold standard set for discriminative estimation The combined system trained on WSJ data achieves full grammar coverage and disambiguation performance of 79% F-score on WSJ data, and 76% F-score ... adjectives, and adverbs have no explicit lexical entry The main verb lexicon contains 9,652 verb stems and 23,525 subcategorization frame-verb stem entries; there are also lexicons for adjectives and...
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Báo cáo khoa học: DG-based prediction and experimental confirmation of SYCRP1-binding sites on the Synechocystis genome pot
Ngày tải lên :
30/03/2014, 10:20
... bands and the complex bands were not separated completely because of the tailing from free DNA bands One possible reason is that the binding of SYCRP1 to slr0733 was weaker than to sll1874 and ... dried and autoradiographed using Fujix BAS2500 (Fuji Film, Minato, Tokyo, Japan) From the intensities of the SYCRP1–DNA complex bands and the free DNA bands, the dissociation constant Kd and the ... Omagari et al DG-based prediction of DNA binding sites by SYCRP1 Table Putative binding sites of SYCRP1 and the downstream genes The standard errors were calculated from standard errors of DDG...
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báo cáo hóa học: " Temporal expression and cellular origin of CC chemokine receptors CCR1, CCR2 and CCR5 in the central nervous system: insight into mechanisms of MOG-induced EAE" pptx
Ngày tải lên :
19/06/2014, 22:20
... study and from previous ones on the role of CCR1 and its ligand CCL3 in the pathogenesis of MS [39,40,42] and EAE [22,44,46], have provided evidence for an important role of CCR1 in MS and EAE ... demyelination [31] and axonal injury and loss [32] Our results demonstrate a prominent accumulation of monocytes and macrophages expressing CCR1, CCR2 or CCR5 mRNA within and around inflammatory ... score curve were chosen for histopathology and evaluation of CCR1, CCR2 and CCR5 mRNA expression in the spinal cord Vertical bars represent mean and standard error of the mean Preparation of radioactively...
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Báo cáo hóa học: "Core strength: A new model for injury prediction and prevention" pptx
Ngày tải lên :
20/06/2014, 00:20
... focused on upper and lower body strength, they have paid less attention to core stability and strength (provided by spine stabilizers such as the transversus and multifidi muscles) and the other ... score and age, rank, tenure and gender was also assessed If a correlation existed between functional movement screen performance and injuries, then appropriate interventions such as flexibility and ... the firefighter to maintain spinal column stability with upper and lower trunk motion while balancing their weight with one hand and knee on the floor The maneuver duplicates the fire fighter...
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báo cáo hóa học:" Denoising Algorithm for the 3D Depth Map Sequences Based on Multihypothesis Motion Estimation" pptx
Ngày tải lên :
20/06/2014, 04:20
... this estimated motion and we adapt the strength of temporal denoising according to the motion estimation reliability In particular, we use motion reliabilities derived from both depth and luminance ... purposes In the ideal case, motion estimation would be performed per wavelet band and reliabilities derived accordingly Here we use same motion vectors for all wavelet bands, and calculate the reliability ... a motion estimation algorithm searches neighbouring frames for a certain number of candidate blocks most resembling the current block from F (t) For each of the candidate blocks, the motion estimation...
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