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Fast full search algorithm using adaptive matching scan based on gradient magnitude

IEICE TRANSACTIONS ON COMMUNICATIONS 2001年第3期E84B卷 694-697页

作者： Kim, JN Choi, TS KJIST Dept Mechatron Puk Gu Kwangju 500712 South Korea

To reduce an amount of computation of full search algorithm for fast motion estimation, we propose a new and fast matching algorithm without any degradation of predicted images. The computational reduction without any degradation comes from adaptive matching scan algorithm according to the image complexity of the reference block in current frame. Experimentally, ae significantly reduce the computational load compared with conventional full search algorithm.

关键词： motion estimation block matching algorithm fast full search adaptive matching scan partial distortion elimination

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A fast full search motion estimation algorithm using sequential rejection of candidates from multilevel decision boundary

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IEICE TRANSACTIONS ON COMMUNICATIONS 2002年第1期E85B卷 355-358页

作者： Kim, JM Ahn, BH KBS Tech Res Inst Yongdeungpo Gu Seoul 150790 South Korea K JIST Dept Mechatron Puk Gu Kwangju 500712 South Korea

We propose a new and fast full search (FS) motion estimation algorithm for video coding. The computational reduction comes from sequential rejection of impossible candidates with derived formula and subblock norms. Ou... 详细信息

关键词： motion estimation block matching algorithm fast full search partial norms decision boundary

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Phase-based frame interpolation method for videos with high accuracy using odd frames

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INTERNATIONAL JOURNAL OF BIOMEDICAL ENGINEERING AND TECHNOLOGY 2020年第3期33卷 199-210页

作者： Amutha, S. Vinsley, S. S. Loyola Inst Technol & Sci Dept CSE Thovalai Tamil Nadu India Lourdes Mt Coll Engn & Technol Dept ECE Mullankinavilai Tamil Nadu India

In this venture, an imaginative unpredictability movement that has low vector preparing calculation toward the end side is proposed for movement repaid video vector frame interpolation. By handling this calculation, we typically demonstrates the issues of broken edges and disfigured structures in an inserted frame by progressively refining movement vectors on various square sizes. In the proposed strategy, the info has been taken as video rather than pictures in the current framework and the recuperation yield is taken as pictures and further process has been experienced to get the yield as video. There are some extraordinary systems in this strategy, for example, stage-based interpolation method, multistage movement repaid interpolation, and so forth is usually used to get high reason picture with diminished haze in the pictures to get the unmistakable picture of the information videos. Exploratory outcomes will demonstrate the visual quality, toughness in the video groupings containing quick moving video.

关键词： motion compensated frame interpolation MCFI block matching algorithm BMA phase-based interpolation steerable pyramid blending technique odd frames optical stream motion vectors MV frame rate up transformation technique

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An Efficient Motion Estimation algorithm using Division Mechanism of Low and High Motion Zone

An Efficient Motion Estimation Algorithm using Division Mech...

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International Multi-Conference on Automation, Computing, Communication, Control and Compressed Sensing

作者： Suvojit Acharjee Debalina Biswas Nilanjan Dey Prasenjit Maji Sheli Sinha Chaudhuri ETCE Dept. Jadavpur University Kolkata West Bengal India Dept. of CSE JIS College of Engineering Kalyani West BengalIndia Dept. of IT JIS College of Engineering Kalyani West Bengal India Dept. of ETCE Jadavpur University Kolkata West BengalIndia

ISBN: (纸本)9781467350891

Motion Estimation involves the most computation as compared to other processes in the entire video compression process. The challenge is to reduce the computation cost and computation time to calculate motion vector compared to Full Search algorithm for motion vector estimation. In this paper, it is proposed to implement an algorithm which will find finer estimation of motion for higher motion zone and take less time in computing motion vector for less movement zone.

关键词： Fast Motion Vector Estimation Motion Vector Estimation block matching algorithm

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FAST GLOBAL MOTION ESTIMATION

FAST GLOBAL MOTION ESTIMATION

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2009 2nd IEEE International Conference on Broadband Network & Multimedia Technology（IC-BNMT2009）

作者： Liu Lei,Wang Zhiliang,Liu Jiwei,Cui Zhaohui School of Information Engineering,University of Science and Technology Beijing,Beijing

Global motion estimation (GME) plays an important role in many video application systems such as video coding system ***,its computational complexity is very *** algorithms are *** this paper,we propose an improvement to the GME *** achieve this by introduce two ***,integral projection algorithm (IPA) is used to get first translation estimation and reduce block matching algorithm (BMA) search ***,coarsely block sampling technology directly reduces the computation *** composite performance experiments prove that our GME method only degrades-0.13dB in PSNR compared with the MPEG-4 verification model (VM),while it gets a 5.93ms per frame speed and is 73.3 times faster than the *** motion compensation (GMC) coding experiments also show no loss of GME accuracy and compression efficiency compared to the MPEG-4 VM GME method.

关键词： Global Motion Estimation Integral Projection algorithm block matching algorithm Iterative Least Square Gradient Descent

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Study on dynamic background generation of sequential images and detection of small moving object

Study on dynamic background generation of sequential images ...

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2018第3届联合国际信息技术，机械与电子工程学术会议(JIMEC 2018)

作者： Qi Wu Yue Zhang Zengping Chen College of Electronic Science National University of Defense Technology

In this paper, the motion estimation and compensation of interframe background, the restoration of complete background image, the detection of moving objects and the optimization of detection results of dynamic sequence images are studied. It is innovatively proposed to use the combination of variance, edge information and histogram that characterizes statistical characteristics as the appropriate characteristic to match blocks, and then use the block matching method to realize motion estimation and compensation of background. This algorithm has proven that it can effectively and quickly realize motion estimation and compensation of background between dynamic sequence images by experiments. Then the traditional background subtraction and three-frame difference method can be used to recover the whole background and detect moving target. However, the problem of target cavity and background residues appears in the target detection results. In this paper, the second threshold method of difference results, the background real-time update method and the subarea multi-threshold method are proposed. The experimental results show that the three schemes can effectively solve the problem of target void and background residue in the detection results. And they are also applicable in the situation where the gray level of the target is similar to the background, which can clearly extract the target submerged in the background, and extend the application scope of traditional background subtraction.

关键词： Sequential Image Motion Estimation and Compensation block matching algorithm Target Cavity and Background Residue

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A Fast and Adaptive Search algorithm Based on Rood Pattern and Gradient Descent

A Fast and Adaptive Search Algorithm Based on Rood Pattern a...

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2010 International Conference on Circuit and Signal Processing (ICCSP 2010) & 2010 Second IITA International Joint Conference on Artificial Intelligence (IITA-JCAI 2010)

作者： MU-LONG LIN,QING-MING YI,MIN SHI College of Information Science and Technology Jinan University Guangzhou,China

In order to achieve the real-time property for video coding,a fast and adaptive algorithm based on starting search point prediction and early-termination strategy is *** analyzes center-bias property and spatial correlation property of motion vector field,and utilizes the respective characteristics of block based gradient descent search(BBGDS) and adaptive rood pattern search(ARPS) *** proposed algorithm adaptively chooses different searching strategies according to the type of the image,makes full use of the cross image motion vector distribution characteristics and optimizes the traditional ARPS *** experimental results show that the proposed algorithm is about 2.3～9.2 times faster than Diamond Search(DS),1.2～4.0 times than *** algorithm can meet the realtime demand without reducing the image quality.

关键词： ARPS algorhtm FS algorithm block matching algorithm gradient descent initial search point

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Disparity Map Estimation Based on Optimization algorithms using Satellite Stereo Imagery

Disparity Map Estimation Based on Optimization Algorithms us...

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IEEE International Conference on Signal and Image Processing Applications

作者： Abdul Qayyum Aamir Saeed Malik Muhammad Naufal Bin Muhammad Saad Faris Abdullah Mahboob Iqbal Electrical and Electronics Engineering Department Universiti Teknologi PETRONAS Tronoh Perak Malaysia.

ISBN: (纸本)9781479989973

The monitoring of trees and vegetation near high voltage transmission power lines is a tedious job for electrical companies. There are many blackouts occur due to interfering the trees with the power transmission lines in hilly as well as urban areas. This is a big challenge for power distribution companies to monitor the vegetation for avoiding the blackouts and flashovers. To solve these problems, there are many methods are used to monitor the trees and vegetation near transmission power poles. But the existing methods are expensive and time consuming. We proposed the new method based on satellite images to monitor the trees and vegetation. The satellite images provide the cost effective solution to solve the monitoring problem. In this paper, we proposed the stereo matching algorithms to measure the disparity map based on satellite stereo imagery. The height estimation of trees and vegetation near power poles based on depth map which is inversely proportional of the disparity map. For measuring the depth map, the dynamic programming (DP) and block matching with energy minimization has been proposed. These techniques are applied on the satellite stereo images and based on results, our proposed DP algorithm produced more accurate disparity map as compared to the block matching algorithm.

关键词： Pleiades satellite images IKONOS Stereo matching algorithms Dynamic programming algorithm block matching algorithm Energy minimization dynamic programming algorithm block matching vegetation Optimization algorithms MAPPING(MATHEMATICAL) maps trees Trees ENERGY MINIMISATION Power transmission lines images satellites Monitoring problem ELECTRICITY POLE Blackouts

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SUB-PARTITION REUSE FOR FAST OPTIMAL MOTION ESTIMATION IN HEVC SUCCESSIVE ELIMINATION algorithmS

SUB-PARTITION REUSE FOR FAST OPTIMAL MOTION ESTIMATION IN HE...

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IEEE International Conference on Image Processing

作者： Luc Trudeau Stephane Coulombe Christian Desrosiers Department of Software and IT Engineering Ecole de technologie superieure Universite du Quebec

ISBN: (纸本)9781467399623

In the context of motion estimation (ME) for video coding, the rate-constrained successive elimination algorithm (RC-SEA) safely eliminates candidate motion vectors while preserving the optimal candidate chosen by the block matching algorithm (BMA). This paper describes a technique for reusing ME information from rectangular to square prediction units in order to reduce the search area without altering the optimal candidate chosen by the BMA. Our experiments show that, on average, when this optimization is combined with the RCSEA in the HEVC HM encoder reference software, the number of sum of the absolute differences (SAD) operations drops by 94.9%, resulting in a speedup of 6.13x in full search mode. Although identical coding decisions cannot be guaranteed when multiple optimal solutions exist, the average impact on BD-PSNR is 0.0002 dB.

关键词： Successive elimination algorithms block matching algorithm Motion estimation HEVC motion estimation High efficiency video coding block matching algorithms reuse motion vector optimal solution Speeding candidate species

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