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Low bit-rate video coding with spatio-temporal geometric transforms
1996
IEE Proceedings - Vision Image and Signal Processing
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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
2012
International Journal of Computer Applications
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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
2002
IEEE transactions on circuits and systems for video technology (Print)
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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
1993
Optical Engineering: The Journal of SPIE
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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
2003
IEEE transactions on circuits and systems for video technology (Print)
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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
2020
Journal Electrical and Electronic Engineering
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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
2008
2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008)
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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
2021
Turkish Journal of Computer and Mathematics Education
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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
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, 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
1998
Visual Communications and Image Processing '98
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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
2007
IEEE Transactions on Image Processing
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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
2002
IEEE Transactions on Image Processing
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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
1997
Transactions on Emerging Telecommunications Technologies
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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
1999
IEEE transactions on circuits and systems for video technology (Print)
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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
2012
EURASIP Journal on Advances in Signal Processing
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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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