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A novel upsampling scheme for depth map compression in 3DTV system 一种新的3DTV系统深度图压缩上采样方案
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702456
Yanjie Li, Lifeng Sun
{"title":"A novel upsampling scheme for depth map compression in 3DTV system","authors":"Yanjie Li, Lifeng Sun","doi":"10.1109/PCS.2010.5702456","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702456","url":null,"abstract":"In 3D video transmission, the depth map is normally compressed by resolution reduction to save bandwidth. The lost information in resolution reduction is recovered by an appropriate upsampling algorithm in decoding step. Most previous work considers the depth upsampling problem as common 2D map upsampling problem and do not take the intrinsic property of depth map into consideration. In this paper, we propose a novel two-step depth map upsampling scheme to address the problem on 3D videos. The first step utilizes the full resolution 2D color map to direct the reconstruction of a more accurate full resolution depth map. And the second step further flats the reconstructed depth map to ensure its local uniformity. Test results show that the proposed novel upsam-pling scheme achieves up to 2dB coding gains for the rendering of free-viewpoint video, and improves its perceptual quality significantly.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126607198","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: 22
Recent advances in video coding using static background models 使用静态背景模型的视频编码的最新进展
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702536
A. Krutz, A. Glantz, T. Sikora
{"title":"Recent advances in video coding using static background models","authors":"A. Krutz, A. Glantz, T. Sikora","doi":"10.1109/PCS.2010.5702536","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702536","url":null,"abstract":"Sprite coding, as standardized in MPEG-4 Visual, can result in superior performance compared to common hybrid video codecs both objectively and subjectively. However, state-of-the-art video coding standard H.264/AVC clearly outperforms MPEG-4 Visual sprite coding in broad bit rate ranges. Based on the sprite coding idea, this paper proposes a video coding technique that merges the advantages of H.264/AVC and sprite coding. For that, sophisticated algorithms for global motion estimation, sprite generation and object segmentation — all needed for thorough sprite coding — are incorporated into an H.264/AVC coding environment. The proposed approach outperforms H.264/AVC especially in lower bit rate ranges. Savings up to 21% can be achieved.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126175139","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: 2
Low complexity video coding and the emerging HEVC standard 低复杂度视频编码和新兴的HEVC标准
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702540
K. Ugur, K. Andersson, A. Fuldseth, G. Bjøntegaard, L. P. Endresen, J. Lainema, A. Hallapuro, J. Ridge, D. Rusanovskyy, Cixun Zhang, A. Norkin, C. Priddle, T. Rusert, Jonatan Samuelsson, Rickard Sjöberg, Zhuangfei Wu
{"title":"Low complexity video coding and the emerging HEVC standard","authors":"K. Ugur, K. Andersson, A. Fuldseth, G. Bjøntegaard, L. P. Endresen, J. Lainema, A. Hallapuro, J. Ridge, D. Rusanovskyy, Cixun Zhang, A. Norkin, C. Priddle, T. Rusert, Jonatan Samuelsson, Rickard Sjöberg, Zhuangfei Wu","doi":"10.1109/PCS.2010.5702540","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702540","url":null,"abstract":"This paper describes a low complexity video codec with high coding efficiency. It was proposed to the High Efficiency Video Coding (HEVC) standardization effort of MPEG and VCEG, and has been partially adopted into the initial HEVC Test Model under Consideration design. The proposal utilizes a quad-tree structure with a support of large macroblocks of size 64×64 and 32×32, in addition to macroblocks of size 16×16. The entropy coding is done using a low complexity variable length coding based scheme with improved context adaptation over the H.264/AVC design. In addition, the proposal includes improved interpolation and deblocking filters, giving better coding efficiency while having low complexity. Finally, an improved intra coding method is presented. The subjective quality of the proposal is evaluated extensively and the results show that the proposed method achieves similar visual quality as H.264/AVC High Profile anchors with around 50% and 35% bit rate reduction for low delay and random-access experiments respectively at high definition sequences. This is achieved with less complexity than H.264/AVC Baseline Profile, making the proposal especially suitable for resource constrained environments.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126473079","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: 17
Automatic moving object extraction using x-means clustering 基于x均值聚类的自动运动目标提取
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702477
K. Imamura, Naoki Kubo, H. Hashimoto
{"title":"Automatic moving object extraction using x-means clustering","authors":"K. Imamura, Naoki Kubo, H. Hashimoto","doi":"10.1109/PCS.2010.5702477","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702477","url":null,"abstract":"The present paper proposes an automatic extraction technique of moving objects using x-means clustering. The proposed technique is an extended k-means clustering and can determine the optimal number of clusters based on the Bayesian Information Criterion(BIC). In the proposed method, the feature points are extracted from a current frame, and x-means clustering classifies the feature points based on their estimated affine motion parameters. A label is assigned to the segmented region, which is obtained by morphological watershed, by voting for the feature point cluster in each region. The labeling result represents the moving object extraction. Experimental results reveal that the proposed method provides extraction results with the suitable object number.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125197747","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: 15
The dependence of visual noise perception on background color and luminance 视觉噪声感知对背景颜色和亮度的依赖性
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702573
M. Shohara, K. Kotani
{"title":"The dependence of visual noise perception on background color and luminance","authors":"M. Shohara, K. Kotani","doi":"10.1109/PCS.2010.5702573","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702573","url":null,"abstract":"This paper describes the dependency of noise perception on background color and luminance of noise quantitatively. We conduct subjective and quantitative experiments for three noise models, using a modified grayscale method. The subjective experiment results show the perceived color noise depends on the background color, but the perceived luminance noise does not. The most sensitive background colors for color noises are yellow and purple. The perceived noises against background gray level show the similar trend between noise models. When the background gray level is L∗∼25, we perceive the noise best. In addition, the perceived chromatic noise level is about 8 times smaller than the calculated color noise using CIELAB Euclidean distance.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116128333","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: 4
Separable Wiener filter based adaptive in-loop filter for video coding 基于可分离维纳滤波器的视频编码自适应环内滤波器
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702581
Mischa Siekmann, S. Bosse, H. Schwarz, T. Wiegand
{"title":"Separable Wiener filter based adaptive in-loop filter for video coding","authors":"Mischa Siekmann, S. Bosse, H. Schwarz, T. Wiegand","doi":"10.1109/PCS.2010.5702581","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702581","url":null,"abstract":"Recent investigations have shown that a non-separable Wiener filter, that is applied inside the motion-compensation loop, can improve the coding efficiency of hybrid video coding designs. In this paper, we study the application of separable Wiener filters. Our design includes the possibility to adaptively choose between the application of the vertical, horizontal, or combined filter. The simulation results verify that a separable in-loop Wiener filter is capable of providing virtually the same increase in coding efficiency as a non-separable Wiener filter, but at a significantly reduced decoder complexity.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061175","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
Power-aware complexity-scalable multiview video coding for mobile devices 用于移动设备的功率感知复杂可扩展的多视图视频编码
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702506
M. Shafique, B. Zatt, S. Bampi, J. Henkel
{"title":"Power-aware complexity-scalable multiview video coding for mobile devices","authors":"M. Shafique, B. Zatt, S. Bampi, J. Henkel","doi":"10.1109/PCS.2010.5702506","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702506","url":null,"abstract":"We propose a novel power-aware scheme for complexity-scalable multiview video coding on mobile devices. Our scheme exploits the asymmetric view quality which is based on the binocular suppression theory. Our scheme employs different quality-complexity classes (QCCs) and adapts at run time depending upon the current battery state. It thereby enables a run-time tradeoff between complexity and video quality. The experimental results show that our scheme is superior to state-of-the-art and it provides an up to 87% complexity reduction while keeping the PSNR close to the exhaustive mode decision. We have demonstrated the power-aware adaptivity between different QCCs using a laptop with battery charging and discharging scenarios.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127360240","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: 7
Coding efficient improvement by adaptive search center definition 自适应搜索中心定义提高编码效率
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702571
Kyohei Oba, Takahiro Bandou, Tian Song, T. Shimamoto
{"title":"Coding efficient improvement by adaptive search center definition","authors":"Kyohei Oba, Takahiro Bandou, Tian Song, T. Shimamoto","doi":"10.1109/PCS.2010.5702571","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702571","url":null,"abstract":"In this paper, an efficient search center definition algorithm is proposed for H.264/AVC. H.264/AVC achieved high coding efficiency by introducing some new coding tools including a new definition of the search center. However, the definition of the search center is not efficient in the case of significant motions. This work proposes some new search center candidates using spatial and temporal correlations of motion vectors to improve the coding efficiency. Simulation results show that the proposed search centers can achieve very much bit saving but induced high computation complexity. Additional complexity reduction algorithm is also introduced to improve the trade off between bit saving and implementation performance. This work realized a maximum bit saving of 19%.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132796554","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: 0
Adaptive direct vector derivation for video coding 视频编码的自适应直接矢量推导
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702458
Yusuke Itani, Shun-ichi Sekiguchi, Y. Yamada
{"title":"Adaptive direct vector derivation for video coding","authors":"Yusuke Itani, Shun-ichi Sekiguchi, Y. Yamada","doi":"10.1109/PCS.2010.5702458","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702458","url":null,"abstract":"This paper proposes a new method for improving direct prediction scheme that has been employed in conventional video coding standards such as AVC/H.264. We extend direct prediction concept to achieve better adaptation to local statistics of video source with the assumption of the use of larger motion blocks than conventional macroblock size. Firstly, our direct prediction method introduces block adaptive spatio-temporal estimation of direct motion vector, in order to compensate loss of accuracy of motion vector estimation for large motion blocks. This estimation method is performed without explicit signaling by employing decode-side collaborative decision. Then, adaptive selection of two reference pictures is performed to improve direct prediction efficiency where reliability of estimated direct motion vector is poor. Experimental results show the proposed method provides up to 3.3% bitrate saving and 1.5% in average in low-bitrate coding.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"3 23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129684953","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: 4
Improved FMO based H.264 frame layer rate control for low bit rate video transmission 改进的基于FMO的H.264帧层速率控制，用于低比特率视频传输
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702529
R. Cajote, S. Aramvith
{"title":"Improved FMO based H.264 frame layer rate control for low bit rate video transmission","authors":"R. Cajote, S. Aramvith","doi":"10.1109/PCS.2010.5702529","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702529","url":null,"abstract":"The use of Flexible Macroblock Ordering (FMO) in H.264/AVC as an error-resilient tool incurs extra overhead bits that reduces coding efficiency at low bit rate. To improve coding efficiency, we present an improved frame-layer H.264/AVC rate control that takes into consideration the effects of using FMO for video transmission. In this paper, we propose a new header bits model, an enhanced frame complexity measure and a quantization parameter (QP) adjustment scheme. Simulation results show that the proposed method performed better than the existing frame layer rate control with FMO enabled using different number of slice groups.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125113556","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: 2
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