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Video Coding With Quad-Trees And Adaptive Vector Quantization
2015
Zenodo
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CONCLUSION In this paper we have presented a video encoding scheme without motion compensation. This approach is based on AVQ and quad-tree coding. ...
RESULTS OF THE QUAD-TREE CODEC In this section, we provide some coding results of our new codec and comparisons with the tmn codec [11] . ...
doi:10.5281/zenodo.37412
fatcat:lw2thk7rzzfgdf2e6qqtttrtte
Video Coding with Adaptive Vector Quantization and Rate Distortion Optimization
[chapter]
2003
Mathematics — Key Technology for the Future
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The codec is based on adaptive vector quantization and has been combined with several video coding techniques like wavelet transform, quad-trees, and rate distortion optimization. ...
The goal of this project is the evaluation and development o f a new adaptive image sequence coding approach. ...
The codec is based on hierarchical adaptive v ector quantization (AVQ) in the wavelet domain and, unlike standard video coding, does not apply motion compensation. ...
doi:10.1007/978-3-642-55753-8_42
fatcat:qqn2dszydzcsresmlti2ligjs4
Quad-tree partitioned compressed sensing for depth map coding
2014
2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
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To exploit temporal correlation and enhance coding efficiency, such quad-tree based CS acquisition is further extended to inter-frame encoding, where block partitioning is performed independently on the ...
In this context, quad-tree decomposition is performed on a depth image to differentiate irregular uniform and edge areas prior to CS acquisition. ...
Then, the resulting measurement vector y ∈ R P is processed by a scalar quantizer with a certain quantization parameter (QP), and the quantized indices y are entropy encoded using context adaptive variable ...
doi:10.1109/icassp.2014.6853721
dblp:conf/icassp/LiuVK14
fatcat:wog6zbmdjjdilcmzyo4zdasdyu
Non-Predictive Multistage Lattice Vector Quantization Video Coding
[chapter]
2011
Effective Video Coding for Multimedia Applications
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Quad-tree coding Significant data often sifted from a set of data or subband using quad-tree coding technique. Often, a treshold is used for this purpose. ...
Background The following subsections discuss briefly the basic concept of lattice vector quantization as well as a brief discussion about quad-tree coding. ...
The complete efficient video system depends upon source coding, proper inter and intra frame coding, emerging newer transform, quantization techniques and proper error concealment.The book gives the solution ...
doi:10.5772/16110
fatcat:qsqyuz6pvvb3zn2fmygbgudzaa
Comparative Study Of H.265 & H.264 Video Compression
2016
Zenodo
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Video is the sequence of images played with respect to time. The successive images are highly correlated with each other. Video compression algorithms take the advantage of this fact. ...
-4) Part 10 has dominated the video coding standardization community. ...
transformation & quantization. • Reduction of final redundancy in residuals and motion vectors transmission and signaling using entropy coding. [134]
Fig. 4:H.265 Encoder The video coding layer of HEVC ...
doi:10.5281/zenodo.48845
fatcat:zr63ii47u5eldn5iqb5l4bdidi
Mode Dependent Vector Quantization with a rate-distortion optimized codebook for residue coding in video compression
2015
2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
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Experimental results show that the codebook can be independent of the quantization parameter (QP) with no loss in terms of coding efficiency. ...
We propose a novel scheme for encoding the prediction residues using a Mode Dependent Vector Quantization (MDVQ) which aims at reducing the redundancy in residual domain. ...
A CU is further split into a quad-tree of Transform Units (TU), on which transform, scalar quantization and entropy coding of residual signals are performed. ...
doi:10.1109/icassp.2015.7178207
dblp:conf/icassp/HuangHGS15
fatcat:zdeq4dvww5e6nmrkvcuyc7f7de
A fast full-search adaptive vector quantizer for video coding
2001
Conference Record of Thirty-Fifth Asilomar Conference on Signals, Systems and Computers (Cat.No.01CH37256)
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Simulations show that full-search tree residual VQ (FTRVQ) can provide up to 3 dB improvement over a similar RVQ encoder on video sequences. ...
This paper presents a novel VQ structure which provides very good quality encoding for video sequences and exploits the computational savings gained from a fast-search algorithm. ...
A VIDEO CODING ALGORITHM USING RATE-DISTORTION ADAPTIVE-SEARCH METHODS Simulations on video sequences were performed with an adaptive-search, locally rate-distortion optimal, mean-removed quantizer described ...
doi:10.1109/acssc.2001.986943
fatcat:g7iladzn2rax5nk2vtqkvjomw4
IMAGE & VIDEO COMPRESSION WITH RATE DISTORTION APPROACH: A REVIEW
2018
International Journal of Advanced Research in Computer Science
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Quad
tree
Partitioning
2. Quantization
Process
3. ...
quad tree partition technique, syntax based arithmetic coding. ...
doi:10.26483/ijarcs.v9i1.5461
fatcat:f6ab454asfeu7n2lr4nlijo76e
Review on using Region of interest for HEVC
2018
International Journal of Engineering & Technology
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High efficiency video coding (HEVC) is the latest video compression standard. The coding efficiency of HEVC is 50% more than the preceding standard Advanced video coding (AVC). ...
HEVC has gained this by introducing many advanced techniques such as adaptive block partitioning system known as quadtree, tiles for parallelization, improved entropy coding called Context-Adaptive Binary ...
Flexible CTU partitioning structure In HEVC quad tree block partitioning structure is used. It allows partitioning a video frame into fixed size blocks called Coding tree units (CTU) [3] . ...
doi:10.14419/ijet.v7i2.4.11173
fatcat:aqmzs5gi3bfjhoyiqr4ugayl4y
A Distributed Video Coder Based On The H.264/Avc Standard
2007
Zenodo
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In [6] it was possible to obtain a good coding gain replacing the traditional run-length coding with a hierarchical quad-tree algorithm. ...
According to [6] , a quad-tree based solution proves to be more suitable for coding the signal with respect to the more traditional run-length coding in a loss-free transmission. ...
doi:10.5281/zenodo.40341
fatcat:soadrcozdjctlivl5mele2n2zq
Simulation and Performance Enhancement of High Efficiency Video Coding Standard for Video Compression
2019
VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE
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The only solution to fight with is the video compression techniques/ standards.The High efficiency video coding standard(H.265/ HEVC) is newly evolved standard that is popularly used. this standard is ...
In the era of modern communication, the transmission of video is the most demanded feature and that makes the bandwidth issues crucial. ...
College of Engineering, and C. U. Shah University for supporting us in the research work by providing the technical platform and giving us an opportunity to develop ourselves. ...
doi:10.35940/ijitee.j1108.0981119
fatcat:pihjyz5rfbeu3fcsmhvfi466wy
Medical Ultrasound Video Coding with H.265/HEVC Based on ROI Extraction
2016
PLoS ONE
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For medical video in particular, Medical Ultrasound Video Coding with H.265/HEVC Based on ROI Extraction PLOS ONE | ...
First, an effective ROI extraction algorithm based on image textural features is proposed to strengthen the applicability of ROI detection results in the H.265/HEVC quad-tree coding structure. ...
The quad-tree structure shaped ROI extraction strategy is the precondition, and the otherness coding strategy for ROIs and non-ROIs is essential to improving the compression efficiency in medical video ...
doi:10.1371/journal.pone.0165698
pmid:27814367
pmcid:PMC5096667
fatcat:cgbc33epanafncqmekg7nhmyry
Entropy criterion for optimal bit allocation between motion and prediction error information
1993
Visual Communications and Image Processing '93
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Motion estimation and compensation techniques are widely used in video coding. This paper addresses the problem of the trade-o between the motion and the prediction error information. ...
As a particular application, this criterion is applied to the split procedure of an adaptive m ultigrid block matching technique. ...
The transformed coe cients, the DFD coe cients and the motion vectors are entropy coded by an adaptive arithmetic coder 7 . ...
doi:10.1117/12.157941
fatcat:bo7tj74zmnd3dku2rcskl32twe
Image Compression: A Survey
2014
Research Journal of Applied Sciences Engineering and Technology
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Multimedia data whether graphics, audio, video data which is uncompress requires considerable transmission bandwidth and storage capacity. ...
There is a need to study and analyze the literature for image compression, as the demand for images, video sequences and computer animation has increased at very high rate so that the increment is drastically ...
We use two quad tree based schemes fast top down heuristic technique and with a large range multiplier method. ...
doi:10.19026/rjaset.7.303
fatcat:wjdqyahpija2npgnp4nbi6puvi
Review of Proposed High Efficiency Video Coding (HEVC) Standard
2012
International Journal of Computer Applications
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video coding standard and exhibit superior coding performance improvements over its predecessors. ...
of the technological advancements, and compares its performance with the H.264/ MPEG-4 AVC high-profile standard. ...
prediction, with block sizes ranging from 64x64 down to 8x8 pixels and the size of prediction blocks can be adaptively chosen by using recursive quad-tree partitioning [8] . ...
doi:10.5120/9621-4265
fatcat:q2pna4iy4za5bp7xdwmfo4wlcy
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