Results 221 to 230 of about 113,207 (265)

Performance analysis of VVC intra coding

Journal of Visual Communication and Image Representation, 2021
Abstract This article presents a performance analysis of Versatile Video Coding (VVC) intra-frame prediction. VVC is the next generation of video coding standards, which has been developed to supply the demand of upcoming video applications. VVC brings several innovations and enhancements for the intra-frame prediction to improve the encoding ...
Mário Saldanha, Gustavo Sanchez, César Marcon, Luciano Agostini   +3 more
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Biorthogonal wavelets for intra-frame video coding

IWISPA 2000. Proceedings of the First International Workshop on Image and Signal Processing and Analysis. in conjunction with 22nd International Conference on Information Technology Interfaces. (IEEE Cat. No.00EX437), 2002
The choice of filter bank in wavelet video compression is a crucial issue that effects both video quality and compression ratio. A series of biorthogonal, symmetric wavelet filters of differing length were evaluated by compressing and decompressing a number of standard video test sequences, using three sets of quantisation parameters.
Morris, T., Britch, D.
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Object-based intra-frame wavelet video coding

ISPA 2001. Proceedings of the 2nd International Symposium on Image and Signal Processing and Analysis. In conjunction with 23rd International Conference on Information Technology Interfaces (IEEE Cat. No.01EX480), 2002
An object-based wavelet-based video codec has been designed and implemented. The codec takes a colour video sequence of arbitrary size as input and performs intra-frame object-based compression on the sequence. Video sequences are segmented using an optic flow-based algorithm, before being transformed with a symmetrical wavelet transform, prior to ...
Britch, D., Morris, T.
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Enhancement of intra-coded pictures for greater coding efficiency

2016 Picture Coding Symposium (PCS), 2016
Allocating low bit-budgets to intra-coded pictures can often lead to high quantisation and loss of important high frequency information. Coding at lower resolutions can alleviate some of this distortion when utilising effective resampling techniques and filters that minimise the additional distortion introduced as a result of spatial resampling ...
Brett Hosking, Dimitris Agrafiotis, David Bull, Nick Easton   +3 more
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Intra-picture Coding

2015
Still (or intra-picture) image coding includes compression of binary images and images with multiple amplitude levels, the latter case either monochrome or with multiple color components, as typically captured by cameras or image scanners. Beyond that, compression schemes are also applied to other sensor data such as magnetic resonance intensity in ...
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Improved lossless intra coding for next generation video coding

SPIE Proceedings, 2016
Recently, there have been efforts by the ITU-T VCEG and ISO/IEC MPEG to further improve the compression performance of the High Efficiency Video Coding (HEVC) standard for developing a potential next generation video coding standard. The exploratory codec software of this potential standard includes new coding tools for inter and intra coding.
Rahul Vanam, Yuwen He, Yan Ye
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Fast coding tree unit decision for HEVC intra coding

2013 IEEE International Conference on Consumer Electronics - China, 2013
The Quad-tree structure in HEVC contributes to significant coding efficiency improvement, especially for high resolution videos. However, its recursive representation increases the coding complexity as well. This paper brings forward a fast coding tree unit algorithm to speed up the original intra coding in HEVC.
null Caixia Bai, null Chun Yuan
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High priority intra coding method for depth video coding

2012 Picture Coding Symposium, 2012
Depth video coding is one of the key techniques to realize the three-dimensional (3D) video system. The depth video is spatially high correlated compared to its corresponding color video in general. In this paper, we propose a high priority intra coding method for depth video coding to efficiently reduce the spatial redundancy.
null Kwan-Jung Oh, null Jaejoon Lee, null Du-Sik Park   +2 more
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Intra‐frame coding equipment using LSI oriented coding algorithm

Electronics and Communications in Japan (Part I: Communications), 1984
AbstractCompact and low‐cost video coding equipment is indispensable for the economical realization of visual communication services such as traffic monitoring entertainment relay, etc. This paper describes an LSI oriented coding algorithm which is effective for the compact and economical realization of intra‐frame coding equipment.
Hideo Kuroda, Naoki Mukawa, Sakae Okubo
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Hybrid angular intra/template matching prediction for HEVC intra coding

2015 Visual Communications and Image Processing (VCIP), 2015
In the latest HEVC video coding standard, angular intra prediction (AIP) applies 35 modes including 33 angular modes which can handle blocks with direction information well, and other 2 modes (DC and planar) which are used to predict smooth blocks. However, for blocks with complex texture, these modes may not give good predictions.
Tao Zhang, Haoming Chen, Ming-Ting Sun, Debin Zhao, Wen Gao   +4 more
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