Journal ArticleDOI
Fast Intra Prediction Based on Content Property Analysis for Low Complexity HEVC-Based Screen Content Coding
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TLDR
Experimental results show that the proposed algorithm can save 44.92% encoding time on average with negligible loss of video quality.Abstract:
Screen content coding (SCC) has evolved into the extension of the High Efficiency Video Coding (HEVC). Low-latency, real-time transport between devices in the form of screen content video is becoming popular in many applications. However, the complexity of encoder is still very high for intra prediction in HEVC-based SCC. This paper proposes a fast intra prediction method based on content property analysis for HEVC-based SCC. First, coding units (CUs) are classified into natural content CUs (NCCUs) and screen content CUs (SCCUs), based on the statistic characteristics of the content. For NCCUs, the newly adopted prediction modes, including intra block copy mode and palette mode are skipped, if the DC or PLANR mode is the best mode, after testing the traditional intra prediction rough modes. In addition, the quadtree partition process is also terminated due to the homogeneous and smooth block usually chooses a large size CU. For SCCUs, a rank-based decision strategy is introduced to terminate the splitting process of current CU. For all CUs, the bit per pixel of current CU is used to make a CU size decision. Meanwhile, the depth information of neighboring CUs and co-located CU are utilized to further improve the performance. Experimental results show that the proposed algorithm can save 44.92% encoding time on average with negligible loss of video quality.read more
Citations
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Journal ArticleDOI
Low-Complexity CTU Partition Structure Decision and Fast Intra Mode Decision for Versatile Video Coding
TL;DR: A fast intra-coding algorithm consisting of low-complexity coding tree units (CTU) structure decision and fast intra mode decision and the complexity reduction of the proposed algorithm is up to 70% compared to VVC reference software, and averagely 63% encoding time saving is achieved.
Journal ArticleDOI
DeepQTMT: A Deep Learning Approach for Fast QTMT-based CU Partition of Intra-mode VVC
TL;DR: This paper proposes a deep learning approach to predict the QTMT-based CU partition, for drastically accelerating the encoding process of intra-mode VVC, and develops a multi-threshold decision scheme, achieving a desirable trade-off between complexity and RD performance.
Journal ArticleDOI
Screen Content Quality Assessment: Overview, Benchmark, and Beyond
TL;DR: In this article, screen content, which is often computer-generated, has many characteristics distinctly different from conventional camera-captured natural scene content, and such characteristic differences impose majo...
Journal ArticleDOI
Machine Learning-Based Fast Intra Mode Decision for HEVC Screen Content Coding via Decision Trees
TL;DR: A decision tree-based framework for fast intra mode decision by investigating various features in the training sets and a decision tree constraint technique is developed to reduce the rate–distortion performance loss.
Journal ArticleDOI
Early Intra CU Size Decision for Versatile Video Coding Based on a Tunable Decision Model
TL;DR: This work proposes an early intra coding unit (CU) size partition method for VVC based on a tunable decision model that reduces the encoding time and is suitable for parallel implementation by exploiting the pipeline structure of the VVC encoder due to its independency with neighboring CU blocks.
References
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Journal ArticleDOI
Overview of the High Efficiency Video Coding (HEVC) Standard
TL;DR: The main goal of the HEVC standardization effort is to enable significantly improved compression performance relative to existing standards-in the range of 50% bit-rate reduction for equal perceptual video quality.
Journal ArticleDOI
Efficient Motion and Disparity Estimation Optimization for Low Complexity Multiview Video Coding
Zhaoqing Pan,Yun Zhang,Sam Kwong +2 more
TL;DR: An efficient ME and DE algorithm for reducing the computational complexity of MVC that can be applied to not only the odd views but also the even views and the RD performance degradation is negligible.
Journal ArticleDOI
Fast CU Splitting and Pruning for Suboptimal CU Partitioning in HEVC Intra Coding
Seung-Hyun Cho,Munchurl Kim +1 more
TL;DR: A fast CU splitting and pruning method is presented for HEVC intra coding, which allows for significant reduction in computational complexity with small degradations in rate-distortion (RD) performance.
Journal ArticleDOI
Fast CU size decision and mode decision algorithm for HEVC intra coding
TL;DR: A fast CU size decision and mode decision algorithm for HEVC intra coding that can save 21% computational complexity on average with negligible loss of coding efficiency is proposed.