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2020
IEEE transactions on circuits and systems for video technology (Print)
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Shao 822 Depth Sequence Coding With Hierarchical Partitioning and Spatial-Domain Quantization ................................ .......................................................................... ...
Image/Video Coding and Compression Rate-Distortion-Complexity Optimized Coding Mode Decision for HEVC .................................................. ................................................ ...
doi:10.1109/tcsvt.2020.2971293
fatcat:rfzzigplcrgfpb6qjwbktbteom
A Rate Perceptual-Distortion Optimized Video Coding HEVC
2018
IEICE transactions on information and systems
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The SSIM model is obtained as the sum of SSIM in each Coding Unit (CU) depth of HEVC, which precisely predict SSIM values for the hierarchical quadtree structure of CU in HEVC. ...
A SSIM-quantization model is proposed using the properties of DCT and high resolution quantization assumption. ...
Figure 1 illustrates an example of hierarchal block partition structures in HEVC. ...
doi:10.1587/transinf.2018edp7164
fatcat:mqven4zgcjeh7axlowbzyvkbi4
Image quality vs rate optimized coding of warps for view synthesis in 3D video applications
2012
2012 19th IEEE International Conference on Image Processing
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Warp coding is performed by partitioning warps using a resolution pyramid and predictively exploiting intra and inter partition dependencies. ...
Coded warps are transmitted together with stereo or multi-view video to enable additional functionalities at the receiver-side through image-domain-warping, e.g. depth adaption for stereo displays or support ...
For coding, hierarchical group of warps structures of size 12 and 15 are used to enable a random access at each 0.5 seconds for the 25 and 30 Hz sequences, respectively, as it was specified in the CfP ...
doi:10.1109/icip.2012.6467103
dblp:conf/icip/StefanoskiLS12
fatcat:4vhcmz4obzcejdb556xsgo4phe
A Frame-Level Rate Control Scheme Based on Texture and Nontexture Rate Models for High Efficiency Video Coding
2014
IEEE transactions on circuits and systems for video technology (Print)
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Due to more complicated coding structures and the adoption of new coding tools, the statistical characteristics of transform residues are significantly different depending on the depth levels of coding ...
Index Terms-High Efficiency Video Coding (HEVC), Laplacian distribution, rate control, rate-quantization model. ...
In the current HEVC, more flexible hierarchical-block structures are adopted with quadtree partitions and higher depth levels, which are composed of coding unit (CU), prediction unit (PU), and transform ...
doi:10.1109/tcsvt.2013.2276880
fatcat:43vtg2ppebgcvdbqbl3kzetvye
Review on using Region of interest for HEVC
2018
International Journal of Engineering & Technology
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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 ...
Summaries of the different approaches to identify the ROI are discussed and a new method is explained. ...
Fig. 4 4 Hierarchical coding framework
simple way if H.264/AVC standard requires 4MB data to compress 4K video sequence, H.265/HEVC can encode the same sequence into 2MB while maintaining its quality ...
doi:10.14419/ijet.v7i2.4.11173
fatcat:aqmzs5gi3bfjhoyiqr4ugayl4y
Depth map compression via 3D region-based representation
2016
Multimedia tools and applications
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The 3D planes open up the possibility to code multiview images with a unique representation. ...
Two image segmentation algorithms are proposed for generating a color and depth segmentation. ...
Acknowledgements This work has been developed in the framework of the project BIGGRAPH-TEC2013-43935-R, financed by the Spanish Ministerio de Economía y Competitividad and the European Regional Development ...
doi:10.1007/s11042-016-3727-1
fatcat:ufcfcwrxgnhlva7bsgy5g5scwy
Fast mode decision algorithm for Residual Quadtree coding in HEVC
2011
2011 Visual Communications and Image Processing (VCIP)
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Considering the Rate-Distortion efficiency, we replace the original depth-first mode decision process by a Merge-and-Split decision process. ...
Furthermore, because a substantial numbers of zero-blocks are produced after quantization and mode decision, we reduce the unnecessary computation by using the inheritance property of zero-blocks. ...
Thus, the spatial domain statistics can be estimated at block-level adaptively. ...
doi:10.1109/vcip.2011.6116062
dblp:conf/vcip/TengHC11
fatcat:qa7e7daennab7nkiylk6v56f7i
Present and Future Video Coding Standards
[chapter]
2010
Studies in Computational Intelligence
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This chapter begins with an introduction of the block-based hybrid coding scheme, which is essentially the core of all the video coding standards. ...
For the interoperability in communication, video coding standards are developed to restrict various video coding systems, such that manufacturers can successfully interwork with each other by producing ...
In the recent standards, intra-prediction (see I) is employed in the spatial domain or the transform domain to reduce the spatial redundancy and only the intraprediction errors are coded. ...
doi:10.1007/978-3-642-11686-5_3
fatcat:yvrz6omhcbfnbjk2jgyi7yarnu
Local Stereo Matching Using Combined Matching Cost and Adaptive Cost Aggregation
2015
KSII Transactions on Internet and Information Systems
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In this paper, a novel fractal coding algorithm with motion-vector-field-based motion estimation for depth map sequence is proposed. ...
The PSNR of synthesized view is increased by 0.56 dB with 36.97% bit rate decrease on average compared with H.264 Full Search. And the depth encoding time is saved by up to 66.47%. ...
Mappings from domain to range blocks
The Proposed Fractal Depth Map Sequence Coding Scheme This paper proposes a fractal depth map sequence coding scheme, as shown in Fig. 2 . ...
doi:10.3837/tiis.2015.01.013
fatcat:i6mxkea6szc4rmlbre2rnnur2a
Colored Image Compression Using Gradient Adjustment Prediction Based Wavelet
2011
Journal of Computer Science
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The proposed compression system focuses on an innovative scheme for adaptive wavelet coding technique combined with spatial encoding. ...
And the selection of the quantization step size and the quantization factor (weight) should be done carefully, because experimental results show that these two factors have a great effect on the compression ...
It partitions an image either in spatial domain or frequency domain depending on some control factors whose values are given by the user for the encoder. ...
doi:10.3844/jcssp.2011.304.313
fatcat:aweevtv33vfq7dlqkifgyx4hle
Adaptive Spectral Transform for Wavelet-Based Color Image Compression
2011
IEEE transactions on circuits and systems for video technology (Print)
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coding scheme such as that used in JPEG2000 or color set partitioning in hierarchical trees (CSPIHT). ...
A quadtree represents the spatial partitioning of the set of high frequency coefficients of the color planes into spatially oriented subsets which may be further partitioned into smaller directionally ...
with the "two DWT domain KLT bases" and especially the "single spatial domain KLT basis." ...
doi:10.1109/tcsvt.2011.2133790
fatcat:znv4jvuswbeenevpiirshofeqq
Error-resilient coding in JPEG-2000 and MPEG-4
2000
IEEE Journal on Selected Areas in Communications
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These techniques include resynchronization strategies, data partitioning, reversible VLC's, and header extension codes. ...
This paper addresses this critical problem and provides an overview of the error-resilient approaches that have been evaluated and inserted into the emerging JPEG-2000 wavelet-based image coding standard ...
hard work and contributions. ...
doi:10.1109/49.848245
fatcat:isuqqxutljezbg6kiazxt2cmje
Hierarchical Classification for Complexity Reduction in HEVC Inter Coding
2020
IEEE Access
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The objective evaluation demonstrates that the proposed algorithm can significantly reduce coding complexity with little compression loss. ...
In this paper, a complexity reduction algorithm based on hierarchical classification for HEVC inter coding is proposed. ...
If the residual blocks are evenly distributed in spatial domain, most of the quantized transformation coefficients are 0. At this case, TU is subject to big size. ...
doi:10.1109/access.2020.2977422
fatcat:rfdzgprpo5f7nonq4xglvu7kdu
An Efficient Coding Method for Teleconferencing Video and Confocal Microscopic Image Sequences
2008
Journal of Computing and Information Technology
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In this paper we propose a three-dimensional vector quantization-based video coding scheme. ...
The adaptive vector quantization algorithm is used to train the codebook for optimal performance with time. ...
In other words, the inter index correlation is: a) inherited from the inter vector correlation in the spatial domain and b) generated by the vector quantizer. ...
doi:10.2498/cit.1000892
fatcat:wsknuacp4bfbll6igui5flhpze
Wavelet-based space-frequency compression of ultrasound images
2001
IEEE Transactions on Information Technology in Biomedicine
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This method finds the rate-distortion optimal representation of an image from a large set of possible space-frequency partitions and quantizer combinations and is especially effective when the images to ...
The result is an effective technique that performs better than a leading wavelet-transform coding algorithm, i.e., set partitioning in hierarchical trees (SPIHT), using standard objective distortion measures ...
Chen, School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada, for helping with this paper's data and figures. ...
doi:10.1109/4233.966105
pmid:11759836
fatcat:7nhryv2e55b3jgtrqjwss5tf6i
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