2019 Picture Coding Symposium (PCS)最新文献

A geometry-aware compression of 3D mesh texture with random access 具有随机访问的三维网格纹理的几何感知压缩

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954519

Navid Mahmoudian Bidgoli, Thomas Maugey, A. Roumy, F. Nasiri, F. Payan

引用次数: 3

Machine Learning Accelerated Transform Search For AV1

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954514

Hui Su, Mingliang Chen, A. Bokov, D. Mukherjee, Yunqing Wang, Yue Chen

{"title":"Machine Learning Accelerated Transform Search For AV1","authors":"Hui Su, Mingliang Chen, A. Bokov, D. Mukherjee, Yunqing Wang, Yue Chen","doi":"10.1109/PCS48520.2019.8954514","DOIUrl":"https://doi.org/10.1109/PCS48520.2019.8954514","url":null,"abstract":"AV1 is the state-of-the-art open and royalty-free video compression format that achieves significant bitrate savings over previous generation of video codecs. One of AV1’s major improvement over its predecessor VP9 is the support of more diverse and flexible transform size and kernel selection. However, it also drastically increases the search space for transform unit rate-distortion optimization in AV1 encoders. Unlike conventional encoder speed features that are based on heuristics, we propose a machine learning (ML) based approach to accelerate the transform size and kernel search for AV1. The ML models use input features extracted from the prediction residue block such as standard deviation, correlation and energy distribution. The output of the models indicates the estimated likelihood of which transform size and kernel would be selected as the optimal choice. Based on the ML models, the encoder can prune out the transform size and kernel candidates that are unlikely to be selected and save unnecessary computation to compute their rate-distortion cost. The proposed approach is implemented and tested on the AV1 reference library libaom. The experimental results show that satisfactory encoding speed improvement can be achieved with extremely low compression performance loss. The framework and methodology can also be easily migrated to other video codecs and implementations.","PeriodicalId":237809,"journal":{"name":"2019 Picture Coding Symposium (PCS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129316759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

JND-based Perceptual Rate Distortion Optimization for AV1 Encoder 基于jnd的AV1编码器感知速率失真优化

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954513

Chen Zhu, Li Song, Rong Xie, Jingning Han, Yaowu Xu

引用次数: 0

Intra block copy in Versatile Video Coding with Reference Sample Memory Reuse 基于参考样本内存重用的通用视频编码中的块内复制

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954512

Xiaozhong Xu, Xiang Li, Shan Liu

{"title":"Intra block copy in Versatile Video Coding with Reference Sample Memory Reuse","authors":"Xiaozhong Xu, Xiang Li, Shan Liu","doi":"10.1109/PCS48520.2019.8954512","DOIUrl":"https://doi.org/10.1109/PCS48520.2019.8954512","url":null,"abstract":"Screen contents such as online gaming streaming, remote desktop and WIFI display, become popular in current mainstream video applications. In versatile video coding (VVC), the most recent international video coding standard development, coding tools have been evaluated for optimizing screen content materials. Intra block copy (IBC) has shown its effectiveness in coding of computer-generated contents such as texts and graphics. Therefore, it has been previously included into the HEVC standard version 4, extensions for screen content coding (SCC). A constrained version of IBC mode has also been adopted in the VVC standard where the compensation range is limited within the current coding-tree unit (CTU), assuming a 1-CTU size of memory is allocated for storing IBC’s reference samples. In this paper, methods are proposed to efficiently utilize this reference sample memory for IBC mode such that effectively the search range for IBC mode can be increased without requiring more memory to store the reference samples. As a result, significant coding efficiency improvement over the traditional 1-CTU search range setting can be achieved. One of the proposed memory reuse strategies is considered practical for implementation and therefore has been included in the VVC standard.","PeriodicalId":237809,"journal":{"name":"2019 Picture Coding Symposium (PCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130088371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Low-Complexity Geometric Inter-Prediction for Versatile Video Coding 多用途视频编码的低复杂度几何互预测

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954504

Max Bläser, Han Gao, S. Esenlik, E. Alshina, Zhijie Zhao, Christian Rohlfing, E. Steinbach

引用次数: 6

An IBP-CNN Based Fast Block Partition For Intra Prediction 基于IBP-CNN的快速分块预测

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954522

Wenpeng Ren, Jia Su, Chang Sun, Zhiping Shi

引用次数: 4

A CNN-based In-loop Filtering Approach for AV1 Video Codec 基于cnn的AV1视频编解码器环内滤波方法

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954565

Dandan Ding, Guangyao Chen, D. Mukherjee, Urvang Joshi, Yue Chen

引用次数: 7

Intra Frame Prediction for Video Coding Using a Conditional Autoencoder Approach 基于条件自编码器的视频编码帧内预测

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954546

Fabian Brand, Jürgen Seiler, André Kaup

引用次数: 13

Quantization of Depth in Simulcast and Multiview Coding of Stereoscopic Video plus Depth Using HEVC, VVC and MV-HEVC 用HEVC、VVC和MV-HEVC实现立体视频的深度量化和多视点深度编码

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954539

Y. Al-Obaidi, T. Grajek, M. Domański

引用次数: 1

CNN Accelerated Intra Video Coding, Where Is the Upper Bound? CNN加速视频内编码，上限在哪里?

2019 Picture Coding Symposium (PCS) Pub Date : 2019-11-01 DOI: 10.1109/PCS48520.2019.8954494

Y. Huang, Li Song, E. Izquierdo

{"title":"CNN Accelerated Intra Video Coding, Where Is the Upper Bound?","authors":"Y. Huang, Li Song, E. Izquierdo","doi":"10.1109/PCS48520.2019.8954494","DOIUrl":"https://doi.org/10.1109/PCS48520.2019.8954494","url":null,"abstract":"The very high complexity of the High Efficiency Video Coding standard (HEVC) is the main hurdle for its wide deployment and use. To tackle this problem, a number of recent research outcomes exploit Convolutional Neural Network (CNN) in each HEVC module for reducing the coding complexity. In this paper an effective method to analyse the potential of CNN techniques to reduce the computational cost of HEVC is proposed. A theoretical upper bound for the effectiveness of this approach in common HEVC modules is investigated. The theoretical maximum of learning-based complexity reduction in HEVC and possible reasons for Rate-Distortion (RD) loss are investigated. On the basis of this analysis, an Intra Video Coding Acceleration (IVCA) scheme is proposed, where Border Considered CNN (BC-CNN) based Coding Unit (CU) partition and heuristic Prediction Unit (PU) partition are seamlessly integrated. According to the experimental results, 66.7% of intra coding time can be saved with negligible 1.71% Bjøntegaard delta bit-rate (BDBR) loss. These results partially demonstrate the superiority of the proposed technique against other state-of-the-art approaches aiming at reducing HEVC complexity in intra mode.","PeriodicalId":237809,"journal":{"name":"2019 Picture Coding Symposium (PCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130877707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3