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- research-articleOctober 2021
Merging Multiple Template Matching Predictions in Intra Coding with Attentive Convolutional Neural Network
MM '21: Proceedings of the 29th ACM International Conference on MultimediaPages 1994–2001https://doi.org/10.1145/3474085.3475359In intra coding, template matching prediction is an effective method to reduce the non-local redundancy inside image content. However, the prediction indicated by the best template matching is not always the actually best prediction. To solve this ...
- research-articleJuly 2019
Statistical Early Termination and Early Skip Models for Fast Mode Decision in HEVC INTRA Coding
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Volume 15, Issue 3Article No.: 70, Pages 1–23https://doi.org/10.1145/3321510In this article, statistical Early Termination (ET) and Early Skip (ES) models are proposed for fast Coding Unit (CU) and prediction mode decision in HEVC INTRA coding, in which three categories of ET and ES sub-algorithms are included. First, the CU ...
- research-articleDecember 2018
A Fast Block Partitioning Algorithm Based on SVM for HEVC Intra Coding
ICVIP '18: Proceedings of the 2018 2nd International Conference on Video and Image ProcessingPages 176–181https://doi.org/10.1145/3301506.3301527Quad-tree-based coding unit (CU) block partitioning structure in High Efficiency Video Coding (HEVC) intra prediction causes a significant coding complexity increase. Hence, a fast block partitioning algorithm based on Support Vector Machine (SVM) is ...
- research-articleSeptember 2015
Fast Mode Selection for HEVC Intra-Frame Coding With Entropy Coding Refinement Based on a Transparent Composite Model
IEEE Transactions on Circuits and Systems for Video Technology (IEEETCSVT), Volume 25, Issue 9Pages 1521–1532https://doi.org/10.1109/TCSVT.2015.2395772In comparison with H.264/Advanced Video Coding, the newest video coding standard, High Efficiency Video Coding (HEVC), improves video coding rate-distortion (RD) performance, but at the price of significant increase in its encoding complexity, especially, ...
- ArticleAugust 2015
High-Level Synthesis Design Flow for HEVC Intra Encoder on SoC-FPGA
DSD '15: Proceedings of the 2015 Euromicro Conference on Digital System DesignPages 49–56https://doi.org/10.1109/DSD.2015.67This paper presents a High-Level Synthesis (HLS) flow for mapping a software HEVC encoder into Altera CycloneV SoC-FPGA. The starting point is a C implementation of an open-source Kvazaar HEVC intra encoder, which is minimally refined for SystemC design ...
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- ArticleNovember 2011
Improved entropy coder in H.264/AVC for lossless residual coding in the spatial domain
PSIVT'11: Proceedings of the 5th Pacific Rim conference on Advances in Image and Video Technology - Volume Part IPages 267–276https://doi.org/10.1007/978-3-642-25367-6_24Since a block-based frequency transform is applied to residual data in lossy coding, it can reduce the spatial correlation efficiently. However, since residual data obtained from prediction is directly encoded without transform and quantization in ...
- ArticleAugust 2011
A Multilevel Parallel Intra Coding for H.264/AVC Based on CUDA
ICIG '11: Proceedings of the 2011 Sixth International Conference on Image and GraphicsPages 76–81https://doi.org/10.1109/ICIG.2011.99In this paper, we propose a multilevel parallel intra coding for H.264/AVC based on computed unified device architecture (CUDA). The proposed parallel algorithm improves the parallelism between 4x4 blocks within a macro block (MB) by throwing off some ...
- research-articleDecember 2010
Adaptive Interpolation-Based Divide-and-Predict Intra Coding for H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology (IEEETCSVT), Volume 20, Issue 12Pages 1915–1921https://doi.org/10.1109/TCSVT.2010.2090423A new intra-frame coding method based on H.264/AVC is proposed. In the proposed method, every other pixel is sampled either in a horizontal or vertical direction without any anti-aliasing filtering, and two subframes of the even-pixel and odd-pixel are ...
- ArticleAugust 2010
Enhanced intra coding of H.264/AVC advanced video coding standard with adaptive number of modes
In H.264/AVC intra coding, DC mode is used to predict the regions with no unified direction and the predicted values of all pixels are same. Therefore, the smoothly varying regions are not well de-correlated. In order to address this issue, this paper ...
- research-articleApril 2010
Adaptive Single-Multiple Prediction for H.264/AVC Intra Coding
IEEE Transactions on Circuits and Systems for Video Technology (IEEETCSVT), Volume 20, Issue 4Pages 610–615https://doi.org/10.1109/TCSVT.2010.2041822Intra coding is used for reducing the spatial redundancy in video coding. H.264/MPEG-4 advanced video coding (AVC) supports several types of macroblock (MB) mode for Intra coding. Also, each of these MB modes has several directional prediction modes, ...
- ArticleNovember 2009
An adaptive divide-and-predict coding for intra-frame of H.264/AVC
A new intra-frame coding scheme is proposed for progressive video sequences in H.264/AVC. In the proposed method, every other pixel is sampled either in a horizontal or vertical direction without any anti-aliasing filtering, and two sub-frames of the ...
- ArticleNovember 2009
Intra prediction method based on the linear relationship between the channels for YUV 4:2:0 intra coding
In general, the transformation from RGB to YUV color space reduces the correlation between the channels. But some sources in the YUV space still have strong inter-channel correlation, which can be modeled as a linear function. Based on this linear model,...
- ArticleNovember 2009
Lossless image and video coding based on H.264/AVC intra predictions with simplified interpolations
The lossy video coding is a key technology to compress the video to become very low bit rate data and H.264/AVC standard performs very well in lossy coding. However, the lossless image and video coding still plays an important role, especially in ...
- ArticleJune 2009
Integer M-channel Filter Bank Design for H.264/AVC Intra Coding
WMWA '09: Proceedings of the 2009 Second Pacific-Asia Conference on Web Mining and Web-based ApplicationPages 142–144https://doi.org/10.1109/WMWA.2009.72In the previous work, M-channel filter bank systems(MCFBS) were proposed to overcome the mismatch between the fixed transform matrix and variable transform block sizes in H.264/AVC intra coding. However, the constructed filter banks for MCFBS are with ...
- ArticleMay 2009
A new intra prediction method using channel correlations for the H.264/AVC intra coding
This paper introduces a new intra prediction algorithm that exploits the correlations between the color channels, for the H.264/AVC intra coding. The main idea is to use the weighted sum of neighboring pixels as a new chroma prediction tool, where the ...
- research-articleAugust 2008
Modified rate distortion optimization using inter-block dependence for H.264/AVC intra coding
IEEE Transactions on Consumer Electronics (ITOCE), Volume 54, Issue 3Pages 1383–1388https://doi.org/10.1109/TCE.2008.4637631H.264/AVC allows several prediction schemes including variable modes for intra and inter predictions. To take full advantage of all allowed modes, H.264 employs rate distortion optimization (RDO) as its mode decision method. However, RDO incorporated ...
- articleOctober 2007
Adaptive Transform Coefficient Scan for H.264 Intra Coding
IEICE - Transactions on Information and Systems (TROIS), Volume E90-D, Issue 10Pages 1709–1711https://doi.org/10.1093/ietisy/e90-d.10.1709This paper presents an adaptive transform coefficient scan method that effectively improves intra coding efficiency of H.264. Instead of applying one zig-zag scan to all transform blocks, the proposed method applies a field scan to a horizontally ...
- posterSeptember 2006
Motion driven adaptive transform based on wavelet transform for enhanced video coding
MobiMedia '06: Proceedings of the 2nd international conference on Mobile multimedia communicationsArticle No.: 8, Pages 1–4https://doi.org/10.1145/1374296.1374307Spatial wavelet transform in video coding has traditionally been applied in a non-adaptive fashion. However, since motion compensation introduces specific structure into video frames, adaptive spatial transform can introduce additional coding gain. As ...
- research-articleSeptember 2006
Improved lossless intra coding for H.264/MPEG-4 AVC
IEEE Transactions on Image Processing (TIP), Volume 15, Issue 9Pages 2610–2615https://doi.org/10.1109/TIP.2006.877396A new lossless intra coding method based on sample-by-sample differential pulse code modulation (DPCM) is presented as an enhancement of the H.264/MPEG-4 AVC standard. The H.264/AVC design includes a multidirectional spatial prediction method to reduce ...
- ArticleOctober 1997
Investigations on the influence of lossy shape coding on DCT-based, contour-adaptive texture coding
This paper is focused on the trade-off between lossy shape coding and the transform gain achieved by contour-adaptive texture coding methods. A texture model is established which addresses synthetical object borders (e.g. stemming from texture mapping) ...