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2020 IEEE transactions on circuits and systems for video technology (Print)  
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

Bumshik LEE, Jae Young CHOI
2018 IEICE transactions on information and systems  
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

Nikolce Stefanoski, Manuel Lang, Aljoscha Smolic
2012 2012 19th IEEE International Conference on Image Processing  
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

Bumshik Lee, Munchurl Kim, Truong Q. Nguyen
2014 IEEE transactions on circuits and systems for video technology (Print)  
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

Parmeshwar Kokare, Dr MasoodhuBanu. N.M
2018 International Journal of Engineering & Technology  
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

Marc Maceira Duch, Josep-Ramon Morros, Javier Ruiz-Hidalgo
2016 Multimedia tools and applications  
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

Su-Wei Teng, Hsueh-Ming Hang, Yi-Fu Chen
2011 2011 Visual Communications and Image Processing (VCIP)  
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]

Jie Dong, King Ngi Ngan
2010 Studies in Computational Intelligence  
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  
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

Al-Sammraie
2011 Journal of Computer Science  
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

Ulug Bayazit
2011 IEEE transactions on circuits and systems for video technology (Print)  
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

I. Moccagatta, S. Soudagar, J. Liang, H. Chen
2000 IEEE Journal on Selected Areas in Communications  
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

Yu Lu, Xudong Huang, Huaping Liu, Yang Zhou, Haibing Yin, Liquan Shen
2020 IEEE Access  
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

Vinay Arya, Ankush Mittal, Amit Pande, Ramesh C. Joshi
2008 Journal of Computing and Information Technology  
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

E. Chiu, J. Vaisey, M.S. Atkins
2001 IEEE Transactions on Information Technology in Biomedicine  
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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