Filters








41,821 Hits in 7.0 sec

Fast Motion Estimation Robust to Random Motions Based on a Distance Prediction

Y.-G. Lee, J.B. Ra
2006 IEEE transactions on circuits and systems for video technology (Print)  
For fast motion estimation, a gradient descent search is widely used due to its high efficiency.  ...  Using the estimated distance, we can also noticeably improve the early termination performance in a local search.  ...  Transactions Letters Fast Motion Estimation Robust to Random Motions Based on a Distance Prediction Yun-Gu Lee and Jong Beom Ra, Senior Member, IEEE Abstract-For fast motion estimation, a gradient descent  ... 
doi:10.1109/tcsvt.2006.877149 fatcat:624kpyup7vf5fkn3q2cr2rsmnq

Filtering of Block Motion Vectors for Use in Motion-Based Video Indexing and Retrieval

G. SORWAR
2005 IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences  
Though block-based motion estimation techniques are primarily designed for video coding applications, they are increasingly being used in other video analysis applications due to their simplicity and ease  ...  non-standard video sequences. key words: true object motion estimation, block-matching algorithm, false motion filtering, video indexing  ...  In [10] , [11] , the authors addressed some of the above mentioned issues by introducing a novel concept of distance dependent thresholding search (DTS) algorithm for fast and robust true motion vector  ... 
doi:10.1093/ietfec/e88-a.10.2593 fatcat:4u57pffq3rh3fjgdywuq3aooje

Fast variable-size block motion estimation using merging procedure with an adaptive threshold

Yu-Kuang Tu, Jar-Ferr Yang, Yi-Nung Shen, Ming-Ting Sun
2003 2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)  
An adaptive threshold, which depends on the information obtained from the motion estimation, quantization parameter, and rate distortion cost function is used to determine if the motion vectors of the  ...  A merging procedure for variable-size block motion estimation is proposed to reduce the computation for block-size decision. A smaller block-size is initially used for motion estimation.  ...  Performance of our proposed scheme depends on an accurate and robust threshold.  ... 
doi:10.1109/icme.2003.1221735 dblp:conf/icmcs/TuYSS03 fatcat:oyjnkphuc5ehnbt322emrul3pe

Optimization of fast block motion estimation algorithms

Bing Zeng, Renxiang Li, Ming L. Liou
1997 IEEE transactions on circuits and systems for video technology (Print)  
There are basically three approaches for carrying out fast block motion estimation: 1) fast search by a reduction of motion vector candidates; 2) fast block-matching distortion (BMD) computation; and 3  ...  via minimizing the distance from the true motion vector to the closest checking point (DCCP).  ...  The existing fast block-based motion estimation algorithms can be roughly divided into three approaches: 1) fast search by a reduction of motion vector candidates, including many conventional fast search  ... 
doi:10.1109/76.644063 fatcat:od3ayxb3ivhlnnu756yjm67zfq

Fuzzy Motion Interpolation for Mesh-Based Motion Estimation

Abouzar Eslami, Nasser Sadati, Mehran Jahed
2007 2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing  
Mesh-based motion estimation is an important tool for video coding especially with low bit rate.  ...  In this paper, a new method for interpolating pixel motion from adjacent mesh nodes with the ability of omitting independent nodes is proposed.  ...  Two frequently addressed motion estimation methods are block-based and mesh-based motion estimation.  ... 
doi:10.1109/ciisp.2007.369301 fatcat:nim54h5w55aije3muhnwoxa5xa

Video Block Motion Estimation Based on Gray-Code Kernels

Y. Moshe, H. Hel-Or
2009 IEEE Transactions on Image Processing  
In this paper, a novel fast block-based motion estimation algorithm is proposed.  ...  Motion in modern video coders is estimated using a block matching algorithm that calculates the distance and direction of motion on a block-by-block basis.  ...  In this paper, a novel fast block-based motion estimation algorithm is described.  ... 
doi:10.1109/tip.2009.2025559 pmid:19535322 fatcat:pui5qfqx3fb6bi3vsduohebbmy

A Fully Adaptive Distance-Dependent Thresholding Search (FADTS) Algorithm for Performance-Management Motion Estimation

Golam Sorwar, Manzur Murshed, Laurence S. Dooley
2007 IEEE transactions on circuits and systems for video technology (Print)  
Previously, the novel concept of a distance-dependent thresholding search (DTS) was introduced for performance scalable motion estimation in video coding applications.  ...  In this paper, the DTS algorithm has been extended to a fast and fully adaptive DTS (FADTS), a key feature of which is the automatic adaptation of the threshold using a desired target and the content from  ...  DISTANCE-DEPENDENT THRESHOLDING SEARCH (DTS) ALGORITHM In introduction, it was shown that many contributions in the domain of block-matching algorithms are based on the principle of reducing the checking  ... 
doi:10.1109/tcsvt.2006.888816 fatcat:yvydvve4xvfbbgmhd44aw7p3cq

Fast Compressed Domain Motion Detection in H.264 Video Streams for Video Surveillance Applications

Krzysztof Szczerba, Søren Forchhammer, Jesper Stottrup-Andersen, Peder Tanderup Eybye
2009 2009 Sixth IEEE International Conference on Advanced Video and Signal Based Surveillance  
The determination of which MVs correspond to true motion is based on spatial and temporal clues. An overview block diagram is presented in Figure 1 .  ...  By parsing the coded stream, motion vectors and position of intra blocks are extracted. The motion vectors are processed and analyzed using fast non-iterative techniques.  ... 
doi:10.1109/avss.2009.78 dblp:conf/avss/SzczerbaFSE09 fatcat:plivdlkozvbivbsf4va2poyzvy

Confidence-based adaptive frame rate up-conversion

Kyung-Yeon Min, Dong-Gyu Sim
2013 EURASIP Journal on Advances in Signal Processing  
In order to estimate accurate MVs, we adaptively alternate a search range and the order of blocks to be searched depending on the confidence level in hierarchical motion estimation.  ...  The proposed FRU algorithm employs gradual and adaptive motion estimation based on confidence priority for selecting more accurate motion vectors (MVs).  ...  Two layers are used in the proposed hierarchical motion estimation based on the trade-off between complexity and motion estimation accuracy.  ... 
doi:10.1186/1687-6180-2013-13 fatcat:goyz7aakzfaujkbhloayili5fq

True-Motion Estimation Algorithm and Its Application to Motion-Compensated Temporal Frame Interpolation

Shashi Kiran S, Srinivas Babu N, Ruckmani Divakaran, Mohmad Ashiq A, Arun Kumar B, Rohit J
2017 IJIREEICE  
Where as in true motion estimation the mainly it goes to detect the motion object as closely as possible by using the block matching algorithm, and then after the estimation of the true motion vector fields  ...  After finding true motion vector also called as coherent motion vector field is used to produce the good temporal interpolated frames between existing frames this gives good video with easily flowing one  ...  Where as in true motion estimation the mainly it goes to detect the motion object as closely as possible by using the block matching algorithm, and then after the estimation of the true motion vector fields  ... 
doi:10.17148/ijireeice.2017.5547 fatcat:azgazzcefbdmlarr7res7iphpi

Efficient direction-oriented search algorithm for block motion estimation

Tushar Shankar Shinde, Anil Kumar Tiwari
2018 IET Image Processing  
Motion estimation is one of the most crucial and time-consuming component of video compression methods.  ...  A method for optimal threshold value selection based on the distortion statistics for different partial distortion calculations is presented.  ...  In motion estimation, it is desirable to obtain true motion results in an efficient way for real-time analysis.  ... 
doi:10.1049/iet-ipr.2017.0641 fatcat:3j2suzhd7vg2xitzaah6lbm4zm

Multi step motion estimation algorithm

D. J. Jayaswal, M. A. Zaveri, R. E. Chaudhari
2010 Proceedings of the International Conference and Workshop on Emerging Trends in Technology - ICWET '10  
as it does for earlier algorithms like Three step search(TSS), Four step search(FSS), Diamond(DS), etc and refinement stage used in the algorithm will allow us to extract true motion vector so that the  ...  The novelty of the proposed MSME algorithm is that the search pattern derived is not static but can dynamically shrink or enlarge to account for small and large motion and fixed threshold used improves  ...  Block Matching based motion estimation is used in most video codecs, including MPEG-2, MPEG-4 and H.263 [2] .  ... 
doi:10.1145/1741906.1742012 dblp:conf/icwet/JayaswalZC10 fatcat:hzbxt23vljhynikiw34uwqxkoy

A spatio-temporal recursive search based prediction scheme for efficient multi-frame and bidirectional motion estimation

Ahtsham Ali, Nadeem A. Khan
2012 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
In this paper a new multi-frame/bidirectional motion estimation algorithm based on the concept of recursive-search in spatial and temporal space is proposed that effectively minimizes the number of candidate  ...  Results based on a number of video sequences and on different GOP (Group of Pictures) structures are presented to clearly demonstrate the benefits of the proposed motion estimation technique.  ...  Modern encoders like H.264/AVC (a DCT based codec) or DIRAC (a wavelet based codec) make use of variable block sizes and multiple reference frames for motion estimation (MRFME) in order to deliver higher  ... 
doi:10.1109/icassp.2012.6288105 dblp:conf/icassp/AliK12 fatcat:2iubive655gdhnsovxzh7boli4

Correlation-Based Motion Vector Processing With Adaptive Interpolation Scheme for Motion-Compensated Frame Interpolation

Ai-Mei Huang, Truong Nguyen
2009 IEEE Transactions on Image Processing  
Since our method gradually corrects unreliable motion vectors based on their reliability, we can effectively discover the areas where no motion is reliable to be used, such as occlusions and deformed structures  ...  In addition, the proposed scheme is robust even for those video sequences that contain multiple and fast motions.  ...  Co-Located Motion Vectors The MVs in the received bitstreams are often obtained using block-based motion estimation at the encoder from to .  ... 
doi:10.1109/tip.2008.2010206 pmid:19278918 fatcat:oi55ihwkobgmhg2lqddu5ekxru

A Two-Stage Algorithm of High Resolution Image Alignment for Mobile Applications

Ren-You Huang, Lan-Rong Dung, Tang-Suan Hong
2016 Journal of Computer and Communications  
The proposed method estimates the motion vector by a two-level coarse-to-fine scheme which only exploits sparse reference blocks (25 blocks in this paper) in each level to determine the global motion vector  ...  In order to increase the effective search range and robustness, the predictive motion vector (PMV) technique is used in this work.  ...  Threshold-Order-Dependent Clustering The threshold-order-dependent (TOD) clustering [26] is the simplest algorithm in data clustering.  ... 
doi:10.4236/jcc.2016.44004 fatcat:gnihaxd5s5gtzij47ldp2d7qr4
« Previous Showing results 1 — 15 out of 41,821 results