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A subjective image quality metric for bit-inversion-based watermarking 基于位反转水印的主观图像质量度量
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702535
T. Kimoto, Fumihiko Kosaka
{"title":"A subjective image quality metric for bit-inversion-based watermarking","authors":"T. Kimoto, Fumihiko Kosaka","doi":"10.1109/PCS.2010.5702535","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702535","url":null,"abstract":"An image watermarking scheme using the previously proposed bit embedding method is developed. To achieve a desired subjective visual quality in the watermarked image, the embedding parameter that is related to both the image quality and the embedding capacity is determined by using a perceptual model. First, based on the properties of the bit embedding method, the perceptual model of two kinds of objective quality measures is assumed. Then, the measurements of human subjective image quality are analyzed from the viewpoint of the correlation with these two measures. Thereby, the estimating function that can yield an estimate of the subjective quality from two objective measurements is determined. According to the estimating function, the bit embedding method performs in each image region so as to achieve a desired subjective image quality while increasing the capacity of embedding watermark bits. The simulation results demonstrate that the estimating function values have a linear correlation with human subjective evaluations, and the embedding parameters can be adaptively changed in every image region by using the function.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"31 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":"114301558","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: 1
An efficient side information generation using seed blocks for distributed video coding 基于种子块的分布式视频编码侧信息生成方法
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702585
Dong Yon Kim, Dongsan Jun, H. W. Park
{"title":"An efficient side information generation using seed blocks for distributed video coding","authors":"Dong Yon Kim, Dongsan Jun, H. W. Park","doi":"10.1109/PCS.2010.5702585","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702585","url":null,"abstract":"Recently, a new video coding technique, distributed video coding (DVC), is an emerging research area for low power video coding applications. In the DVC, the encoder is much simpler than the conventional video codec, whereas the decoder is very heavy. The DVC decoder exploits side information which is generated by motion compensated frame interpolation to reconstruct the Wyner-Ziv frame. This paper proposes an efficient side information generation algorithm using seed blocks for DVC. Seed blocks are firstly selected to be used for motion estimation of the other blocks. As the side information is close to the target image, the final reconstructed image in the DVC decoder has better quality and the compression ratio becomes high. The proposed method contributes to improve the DVC compression performance with reduced computing time. Experimental results show that accurate motion vectors are estimated by the proposed method and its computational complexity of motion estimation is significantly reduced in comparison with the previous methods.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"16 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":"128387021","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: 5
Improving the visual quality of AVC/H.264 by combining it with content adaptive depth map compression 提高AVC/H的视觉质量。264与内容自适应深度图压缩相结合
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702545
Christian Keimel, K. Diepold, M. Sarkis
{"title":"Improving the visual quality of AVC/H.264 by combining it with content adaptive depth map compression","authors":"Christian Keimel, K. Diepold, M. Sarkis","doi":"10.1109/PCS.2010.5702545","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702545","url":null,"abstract":"The future of video coding for 3DTV lies in the combination of depth maps and corresponding textures. Most current video coding standards, however, are only optimized for visual quality and are not able to efficiently compress depth maps. We present in this work a content adaptive depth map meshing with tritree and entropy encoding for 3D videos. We show that this approach outperforms the intra frame prediction of AVC/H.264 for the coding of depth maps of still images. We also demonstrate by combining AVC/H.264 with our algorithm that we are able to increase the visual quality of the encoded texture on average by 6 dB. This work is currently limited to still images but an extension to intra coding of 3D video is straightforward.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"21 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":"134618847","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
H.264/AVC to wavelet-based scalable video transcoding supporting multiple coding configurations H.264/AVC到基于小波的可扩展视频转码，支持多种编码配置
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702564
Eduardo Peixoto, Toni Zgaljic, E. Izquierdo
{"title":"H.264/AVC to wavelet-based scalable video transcoding supporting multiple coding configurations","authors":"Eduardo Peixoto, Toni Zgaljic, E. Izquierdo","doi":"10.1109/PCS.2010.5702564","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702564","url":null,"abstract":"Scalable Video Coding (SVC) enables low complexity adaptation of the compressed video, providing an efficient solution for video content delivery through heterogeneous networks and to different displays. However, legacy video and most commercially available content capturing devices use conventional non-scalable coding, e.g., H.264/AVC. This paper proposes an efficient transcoder from H.264/AVC to a wavelet-based SVC to exploit the advantages offerend by the SVC technology. The proposed transcoder is able to cope with different coding configurations in H.264/AVC, such as IPP or IBBP with multiple reference frames. To reduce the transcoder's complexity, motion information and presence of the residual data extracted from the decoded H.264/AVC video are exploited. Experimental results show a good performance of the proposed transcoder in terms of decoded video quality and system complexity.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"275 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":"134535569","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
An adaptive early skip mode decision scheme for multiview video coding 一种多视点视频编码的自适应早期跳过模式决策方案
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702527
B. Zatt, M. Shafique, S. Bampi, J. Henkel
{"title":"An adaptive early skip mode decision scheme for multiview video coding","authors":"B. Zatt, M. Shafique, S. Bampi, J. Henkel","doi":"10.1109/PCS.2010.5702527","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702527","url":null,"abstract":"In this work a novel scheme is proposed for adaptive early SKIP mode decision in the multiview video coding based on mode correlation in the 3D-neighborhood, variance, and ratedistortion properties. Our scheme employs an adaptive thresholding mechanism in order to react to the changing values of Quantization Parameter (QP). Experimental results demonstrate that our scheme provides a consistent time saving over a wide range of QP values. Compared to the exhaustive mode decision, our scheme provides a significant reduction in the encoding complexity (up to 77%) at the cost of a small PSNR loss (0.172 dB in average). Compared to state-of-the-art, our scheme provides an average 2× higher complexity reduction with a relatively higher PSNR value (avg. 0.2 dB).","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"77 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":"125967492","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: 20
Intra prediction architecture for H.264/AVC QFHD encoder H.264/AVC QFHD编码器的帧内预测结构
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702533
Gang He, Dajiang Zhou, Jinjia Zhou, S. Goto
{"title":"Intra prediction architecture for H.264/AVC QFHD encoder","authors":"Gang He, Dajiang Zhou, Jinjia Zhou, S. Goto","doi":"10.1109/PCS.2010.5702533","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702533","url":null,"abstract":"This paper proposes a high-performance intra prediction architecture that can support H.264/AVC high profile. The proposed MB/block co-reordering can avoid data dependency and improve pipeline utilization. Therefore, the timing constraint of real-time 4k×2k encoding can be achieved with negligible quality loss. 16×16 prediction engine and 8×8 prediction engine work parallel for prediction and coefficients generating. A reordering interlaced reconstruction is also designed for fully pipelined architecture. It takes only 160 cycles to process one macroblock (MB). Hardware utilization of prediction and reconstruction modules is almost 100%. Furthermore, PE-reusable 8×8 intra predictor and hybrid SAD & SATD mode decision are proposed to save hardware cost. The design is implemented by 90nm CMOS technology with 113.2k gates and can encode 4k×2k video sequences at 60 fps with operation frequency of 310MHz.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"55 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":"124915004","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
Temporal inconsistency measure for video quality assessment 视频质量评价的时间不一致性度量
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702572
Songnan Li, Lin Ma, Fan Zhang, K. Ngan
{"title":"Temporal inconsistency measure for video quality assessment","authors":"Songnan Li, Lin Ma, Fan Zhang, K. Ngan","doi":"10.1109/PCS.2010.5702572","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702572","url":null,"abstract":"Visual quality assessment plays a crucial role in many vision-related signal processing applications. In the literature, more efforts have been spent on spatial visual quality measure. Although a large number of video quality metrics have been proposed, the methods to use temporal information for quality assessment are less diversified. In this paper, we propose a novel method to measure the temporal impairments. The proposed method can be incorporated into any image quality metric to extend it into a video quality metric. Moreover, it is easy to apply the proposed method in video coding system to incorporate with MSE for rate-distortion optimization.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"84 11 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":"126023333","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
Compressed signature for video identification 压缩签名视频识别
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702534
N. Sprljan, P. Brasnett, S. Paschalakis
{"title":"Compressed signature for video identification","authors":"N. Sprljan, P. Brasnett, S. Paschalakis","doi":"10.1109/PCS.2010.5702534","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702534","url":null,"abstract":"This paper presents a new application-specific lossless compression scheme developed for video identification descriptors, also known as video fingerprints or signatures. In designing such a descriptor, one usually has to balance the descriptor size against discriminating power and temporal localisation performance. The proposed compression scheme alleviates this problem by efficiently exploiting the temporal redundancies present in the video fingerprint, allowing highly accurate fingerprints which also entail low transmission and storage costs. In this paper we provide a detailed description of our compression scheme and a comparative evaluation against well known state-of-the-art generic compression tools.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"67 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":"130113019","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
Challenges in multiview video — The 3 D'S 多视点视频的挑战- 3d
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702454
Antonio Ortega
{"title":"Challenges in multiview video — The 3 D'S","authors":"Antonio Ortega","doi":"10.1109/PCS.2010.5702454","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702454","url":null,"abstract":"For the purpose of this paper we group, under the generic term multiview video, different systems for which multiple standard video cameras and, possibly, additional depth-capturing cameras, are used. Video is then presented to the user using special glasses or displays. Research work in this area has focused on topics ranging from designing compression techniques to developing new 3D displays. In this paper we primarily consider the challenges involved in developing efficient compression tools. Our primary observation is that the “right” coding tools could depend heavily on choices made for content capture, display and communication. This is of course true for conventional video coding as well. But we will argue that it is even more important to address these issues for multiview video because there are much greater differences between different application scenarios (as compared to conventional video). The risk is that coding tools that are too narrowly focused on a specific application scenario may not be at all suitable for others. We focus specifically on three factors for which there exists significant uncertainty, namely, displays, depth estimation and content delivery. Our goal is not to discuss in detail current and future approaches (e.g., emerging alternative display technologies), but rather to show how these various approaches may have an impact on compression system design.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"8 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":"126306111","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
3D pose estimation in high dimensional search spaces with local memorization 基于局部记忆的高维搜索空间三维姿态估计
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702507
Weilan Luo, T. Yamasaki, K. Aizawa
{"title":"3D pose estimation in high dimensional search spaces with local memorization","authors":"Weilan Luo, T. Yamasaki, K. Aizawa","doi":"10.1109/PCS.2010.5702507","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702507","url":null,"abstract":"In this paper, a stochastic approach for extracting the articulated 3D human postures by synchronized multiple cameras in the high-dimensional configuration spaces is presented. Annealed Particle Filtering (APF) [1] seeks for the globally optimal solution of the likelihood. We improve and extend the APF with local memorization to estimate the suited kinematic postures for a volume sequence directly instead of projecting a rough simplified body model to 2D images. Our method guides the particles to the global optimization on the basis of local constraints. A segmentation algorithm is performed on the volumetric models and the process is repeated. We assign the articulated models 42 degrees of freedom. The matching error is about 6% on average while tracking the posture between two neighboring frames.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"35 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":"126439158","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: 1
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