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Low bit-rate video coding with spatio-temporal geometric transforms

S.M.M. de Faria, M. Ghanbari
1996 IEE Proceedings - Vision Image and Signal Processing  
The spatial redundancy of the motion compensated error images is reduced by a combination of Fractal and DCT.  ...  It is shown that in the objects boundaries of the motion compensated error image Fractal outperforms DCT, while in the smooth areas DCT is betterthan Fractal.  ...  Block Image Corner approximation method for reducing motion information. PSNR of motion compensated error images. Figure 10 :Figure 11 : 1011 Video coding results for Sergio sequence.  ... 
doi:10.1049/ip-vis:19960514 fatcat:6qilz3ec6fcnjnlclc6xv4skym

Review of Proposed High Efficiency Video Coding (HEVC) Standard

Eskinder AntenehAyele, S. B. Dhok
2012 International Journal of Computer Applications  
of the technological advancements, and compares its performance with the H.264/ MPEG-4 AVC high-profile standard.  ...  video coding standard and exhibit superior coding performance improvements over its predecessors.  ...  In the 1970s, transform coding techniques and Motion compensated prediction error coding were investigated, and the well-known block-based discrete cosine transform (DCT) was introduced by Ahmed et al  ... 
doi:10.5120/9621-4265 fatcat:q2pna4iy4za5bp7xdwmfo4wlcy

Three-dimensional subband coding techniques for wireless video communications

Hong Man, R.L. de Queiroz, M.J.T. Smith
2002 IEEE transactions on circuits and systems for video technology (Print)  
More specifically, it features a simple coding structure based on quadtree coding and lattice vector quantization techniques.  ...  The error-resilience feature is achieved through classifying the compressed data streams into separated sub-streams with different error sensitivity levels.  ...  motion compensated prediction procedure.  ... 
doi:10.1109/tcsvt.2002.800316 fatcat:whu3jht6mnhsvhxx5dusdeirwy

Guest Editorial: Visual Communications and Image Processing IV

Cheng-Tie Chen
1993 Optical Engineering: The Journal of SPIE  
video processing, pattern recognition, and applications of digital image processing.  ...  Over the past few years the worldwide R&D activities in visual communications and image processing have continued to grow vigorously.  ...  Edge areas are segmented by considering four DCT coefficients at the lowest frequencies. The edge areas are coded with VQIBTC and the smooth areas with VQ/ DCT.  ... 
doi:10.1117/12.158304 fatcat:teikk2o33fahdiehdkkhg73jyi

Variable block-size transforms for H.264/AVC

M. Wien
2003 IEEE transactions on circuits and systems for video technology (Print)  
The basic idea of inter ABT is to align the block size used for transform coding of the prediction error to the block size used for motion compensation.  ...  Intra ABT employs variable block-size prediction and transforms for encoding. With ABT, the maximum feasible signal length is exploited for transform coding.  ...  Mayer, Aachen University, for many insightful discussions on the topic. The author would also like to thank the anonymous reviewers for their helpful comments and suggestions.  ... 
doi:10.1109/tcsvt.2003.815380 fatcat:2bon3wrfzzdp5c23prfj7srgkq

Soft Computing Techniques for Various Image Processing Applications: A Survey

Rahul Kher, Heena Kher
2020 Journal Electrical and Electronic Engineering  
Tools like genetic algorithms (GAs), simulated annealing (SA), and tabu search (TS) etc. have been incorporated with soft computing tools for applications involving optimization.  ...  The techniques of image processing stem from two principal applications namely, improvement of pictorial information for human interpretation and processing of scene data for automatic machine perception  ...  These applications include image filtering/ enhancement, edge extraction, segmentation, object/ face/ target recognition, compression, handwritten digit recognition, motion estimation etc.  ... 
doi:10.11648/j.jeee.20200803.11 fatcat:ko47gevpuvavjnptb2j6xtltje

A Very Low Bit Rate Video Coding for Ubiquitous Services

Ben-Shung Chow
2008 2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008)  
Therefore, the proposed coding strategy in this paper to code the 64*64 binary images is suitable for ubiquitous services.  ...  The video coding with a bit rates below 10k bps has not been considered as a practical application in commercial communication systems.  ...  The DCT coefficients are also classified by the cases coded by Huffman compression. However, the DCT coding, due to its broad dynamic range, will be inefficient for the binary images.  ... 
doi:10.1109/mue.2008.25 dblp:conf/mue/Chow08 fatcat:jons5aeoy5fv7lmxs6yhvry43i

State-Of-The-Art In Video Processing: Compression, Optimization And Retrieval

G. Megala, Et. al.
2021 Turkish Journal of Computer and Mathematics Education  
Removing redundant information is the main task in the video sequence compression. A survey on various block matching algorithms, quantization and entropy coding are focused.  ...  Video compression performs conversion of large raw bits of video sequence into a small compact one, achieving high compression ratio with good video perceptual quality.  ...  A block based motion compensation is the motion compensated DCT video coding which is mostly used in H. 26x and MPEG formats.  ... 
doi:10.17762/turcomat.v12i5.1793 fatcat:q3ocrh73xva5znrewith5opftm

International Conference on Image Processing

1996 Proceedings of 3rd IEEE International Conference on Image Processing  
, Jun Seok Song, Seung Jun Lee, Choong Woong Lee Motion classified 3D vector quantization for sequence coding Hung-Kai Cliff Choi, C.K.  ...  Macq Irregular image sub-sampling and reconstruction by adaptive sampling Subband VPIC with classified joint vector quantization A hybrid object-based video compression technique DCT of spatially adaptive  ... 
doi:10.1109/icip.1996.560353 fatcat:le3ysy6wxrfr7nq56ueropy7tu

SNR scalable video coder using progressive transmission of DCT coefficients

Marshall A. Robers, Lisimachos P. Kondi, Aggelos K. Katsaggelos, Sarah A. Rajala, Majid Rabbani
1998 Visual Communications and Image Processing '98  
The motion blocks were then coded using standard JPEG compression whereas the background blocks were coded with a motion compensated H.263 based algorithm.  ...  MPEG-4 and H.263 both utilize a motion-compensated DCT-based compression scheme. However, in MPEG-4, we are not limited to block-based coding.  ... 
doi:10.1117/12.298330 fatcat:bipiurzzjjhkbmesv75lpvyf2e

Efficient Coding of Shape and Transparency for Video Objects

S.M. Aghito, S. Forchhammer
2007 IEEE Transactions on Image Processing  
In intra mode, the DSLSC binary image coder presented in [3] is used. This is extended here with an intermode utilizing temporal redundancies in shape image sequences.  ...  A novel scheme for coding gray-level alpha planes in object-based video is presented.  ...  Shkarin for providing the modified version of the BMF image coder that was utilized in this work.  ... 
doi:10.1109/tip.2007.903902 pmid:17784597 fatcat:ybbpbxcrdfgh7kqql26dmhau5m

Fractal image compression with region-based functionality

K. Belloulata, J. Konrad
2002 IEEE Transactions on Image Processing  
Region-based functionality offered by the MPEG-4 video compression standard is also appealing for still images, for example to permit object-based queries of a still-image database.  ...  A popular method for still-image compression is fractal coding. However, traditional fractal image coding uses rectangular range and domain blocks.  ...  Secondly, for a given rate, region-based coding often achieves better image quality than standard coding since region boundaries usually coincide with intensity edges that are difficult to encode.  ... 
doi:10.1109/tip.2002.999669 pmid:18244637 fatcat:g476v6fu35c6pg2zsfgbc2hihi

Fixed-rate video codecs for mobile radio systems

Jurgen Streit, Lajos Hanzo
1997 Transactions on Emerging Telecommunications Technologies  
MPEC4 codecs. which rely on bandwidth-efficient but errol--sensitive variable-length coding techniques conibincd with a complex self-descriptive bitstream Ytructure, the proposed codecs exhibil a more  ...  Gail)-cost quantised. fixed but arbilrarily programniable rate discrete cosine transformed (DCT) video codecs, vector-quantised (VQI and quad-trcc (QT) coded algorithms arc proposed and thcir video quality  ...  In the inter-frame mode the incoming video sequence is first motion compensated and then the resulting MCER is DCT encoded.  ... 
doi:10.1002/ett.4460080603 fatcat:av7syzijxbhbnah3gxgil7sy5a

Very low bit-rate video coding using wavelet-based techniques

D. Marpe, H.L. Cycon
1999 IEEE transactions on circuits and systems for video technology (Print)  
In this paper, we propose a very low bit-rate video coding scheme based on a discrete wavelet transform (DWT), block-matching motion estimation (BME), and overlapped block motion compensation (OBMC).  ...  In addition, when restricted to the intraframe mode, the proposed coding algorithm produces results which are among the best reported for still image compression.  ...  Haderer for their contributions to the video coding simulation experiments.  ... 
doi:10.1109/76.744277 fatcat:qwifpwjsfrfghdkv2mb6taosza

A novel fractal monocular and stereo video codec with object-based functionality

Shiping Zhu, Liyun Li, Zaikuo Wang
2012 EURASIP Journal on Advances in Signal Processing  
The monocular codec uses the motion compensated prediction (MCP) structure.  ...  quadtree partition scheme; using improved fast motion estimation to increase the calculation speed; using homo-I-frame like in H.264, etc.  ...  The authors thank for their financial supports. The authors would like to thank the editors and the reviewers for their hard work and their insightful suggestions, which help improving this article.  ... 
doi:10.1186/1687-6180-2012-227 fatcat:z4gzoc3f6jdkxknxkhz6eu3q34
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