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Image coding approach based on image decomposition 基于图像分解的图像编码方法
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702556
Yunhui Shi, Yanli Hou, Baocai Yin, Wenpeng Ding
{"title":"Image coding approach based on image decomposition","authors":"Yunhui Shi, Yanli Hou, Baocai Yin, Wenpeng Ding","doi":"10.1109/PCS.2010.5702556","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702556","url":null,"abstract":"Textures in many images or video scenes are difficult to code because of the large amount of visible detail. This paper proposes an image coding approach to solve this problem, in which we incorporate image decomposition and texture synthesis technology into the image coding framework. The key idea of our approach is to first decompose the original image into cartoon component u and texture component v with different basic characteristics, and then to synthesize the selected texture regions in texture component v. The cartoon component u and the non-synthetic regions in texture component v are compressed by JPEG. Experimental results show bit-rate savings of over 30% compared with JPEG at similar visual quality levels.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"29 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":"116986611","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
Distance and relative speed estimation of binocular camera images based on defocus and disparity information 基于离焦和视差信息的双目相机图像距离和相对速度估计
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702486
Mitsuyasu Ito, Yoshiaki Takada, T. Hamamoto
{"title":"Distance and relative speed estimation of binocular camera images based on defocus and disparity information","authors":"Mitsuyasu Ito, Yoshiaki Takada, T. Hamamoto","doi":"10.1109/PCS.2010.5702486","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702486","url":null,"abstract":"In this paper, we discuss a method of distance and relative speed estimation for ITS by using a certain amount of focus blur. In this method, we use different focus positions of two cameras for obtaining the amount of focus blur. Next, we propose the method of distance estimation by the amount of focus blur and disparity information. According to the result of simulation, the distance and relative speed were estimated reasonably. In addition, we compose a prototype system for the real-time estimation of distance and relative speed. The system consisted of CMOS sensors designed for this processing, an FPGA, a PC, and other devices. As a result of the implementation of processing, our system was properly validated.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"2 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":"117003358","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
Low delay Distributed Video Coding using data hiding 使用数据隐藏的低延迟分布式视频编码
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702569
K. R. Vijayanagar, Bowen Dan, Joohee Kim
{"title":"Low delay Distributed Video Coding using data hiding","authors":"K. R. Vijayanagar, Bowen Dan, Joohee Kim","doi":"10.1109/PCS.2010.5702569","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702569","url":null,"abstract":"Distributed Video Coding (DVC) is a popular topic in the research community and the past years have seen several different implementations. DVC has been proposed as a solution for applications that have limited battery resources and low hardware complexity, thus necessitating a low complexity encoder. An ideal application would be in remote surveillance/monitoring or live video conferencing. However, current solutions use iteratively decodable channel codes like LDPCA or Turbo codes that have large latencies. In order to make real-time communication possible. The proposed architecture makes efficient use of Skip blocks to reduce the bitrate, eliminates the iterative decoding nature of the Wyner-Ziv (WZ) channel and uses a simple data-hiding based compression algorithm. This drastically cuts down on the time complexity of the decoding procedure while still maintaining an rate-distortion performance better than that of H.264/AVC Intra coding and other current DVC solutions.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"70 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":"115103072","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
Scalable multiple description video coding using successive refinement of side quantizers 使用侧量化器的连续细化可扩展的多描述视频编码
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702576
Muhammad Majid, G. Abhayaratne
{"title":"Scalable multiple description video coding using successive refinement of side quantizers","authors":"Muhammad Majid, G. Abhayaratne","doi":"10.1109/PCS.2010.5702576","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702576","url":null,"abstract":"In this paper, we present a new method for scalable multiple description video coding based on motion compensated temporal filtering and multiple description scalar quantizer with successive refinement. In our method quality scalability is achieved by successively refining the side quantizers of a multiple description scalar quantizer. The rate of each description is allocated by considering different refinement levels for each spatio-temporal subband. The performance of the proposed scheme under lossless and lossy channel conditions are presented and compared with single scalable description video coding.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"29 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":"115183550","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
Compression of pre-computed per-pixel texture features using MDS 使用MDS压缩预先计算的每像素纹理特征
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702517
Wai-Man Pang, H. Wong
{"title":"Compression of pre-computed per-pixel texture features using MDS","authors":"Wai-Man Pang, H. Wong","doi":"10.1109/PCS.2010.5702517","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702517","url":null,"abstract":"There are many successful experiences employing texture analysis to improve the accuracy and robustness of image segmentation. Usually, per-pixel based texture analysis is required, which involves intensive computation especially for large images. Precomputation and storing of the texture features involves large file space which is not cost effective. To adopt to these novel needs, we propose the use of multidimensional scaling (MDS) technique to reduce the size of per-pixel texture features of an image while preserving the textural discrminiability for segmentation. Per-pixel texture features will create very large dissimilarity matrix, making the solving of MDS intractable. A sampling-based MDS is therefore introduced to tackle the problem with a divide-and-conquer approach. A compression ratio of 1:24 can be achieved with an average error rate lower than 7%. Preliminary experiments on segmentation using the compressed data show satisfactory results as good as using the uncompressed features. We foresee that such a method will allow texture features to be stored and transferred more efficiently on low processing power devices or embedded systems like mobile phones.","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":"122619280","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
Blind GOP structure analysis of MPEG-2 and H.264/AVC decoded video MPEG-2和H.264/AVC解码视频的盲GOP结构分析
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702480
Gilbert Yammine, Eugen Wige, André Kaup
{"title":"Blind GOP structure analysis of MPEG-2 and H.264/AVC decoded video","authors":"Gilbert Yammine, Eugen Wige, André Kaup","doi":"10.1109/PCS.2010.5702480","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702480","url":null,"abstract":"In this paper, we provide a simple method for analyzing the GOP structure of an MPEG-2 or H.264/AVC decoded video without having access to the bitstream. Noise estimation is applied on the decoded frames and the variance of the noise in the different I-, P-, and B-frames is measured. After the encoding process, the noise variance in the video sequence shows a periodic pattern, which helps in the extraction of the GOP period, as well as the type of frames. This algorithm can be used along with other algorithms to blindly analyze the encoding history of a video sequence. The method has been tested on several MPEG-2 DVB and DVD streams, as well as on H.264/AVC encoded sequences, and shows successful results in both cases.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"81 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":"126239711","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
Edge-based Adaptive Directional Intra Prediction 基于边缘的自适应方向内预测
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702510
Feng Zou, O. Au, Jingjing Dai, Chao Pang, Wen Yang, Xing Wen, Yu Liu
{"title":"Edge-based Adaptive Directional Intra Prediction","authors":"Feng Zou, O. Au, Jingjing Dai, Chao Pang, Wen Yang, Xing Wen, Yu Liu","doi":"10.1109/PCS.2010.5702510","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702510","url":null,"abstract":"H.264/AVC employs intra prediction to reduce spatial redundancy between neighboring blocks. Different directional prediction modes are used to cater diversified video content. Although it achieves quite high coding efficiency, it is desirable to analyze its drawbacks in the existing video coding standard, since it allows us to design better ones. Basically, even after intra prediction, the residue still contains a lot of edge or texture information. Unfortunately, these high frequency components consume a large quantity of bits and the distortion is usually quite high. Based on this drawback, an Edge-based Adaptive Directional Intra Prediction is proposed (EADIP) to reduce the residue energy especially for the edge region. In particular, we establish an edge model in EADIP, which is quite flexible for natural images. Within the model, the edge splits the macroblock into two regions, each being predicted separately. In implementation, we consider the current trend of mode selection and complexity issues. A mode extension is made on INTRA 16×16 in H.264/AVC. Experimental results show that the proposed algorithm outperforms H.264/AVC. And the proposed mode is more likely to be chosen in low bitrate situations.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"1 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":"129367840","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
Improved watermark sharing scheme using minimum error selection and shuffling 采用最小错误选择和变换的改进水印共享方案
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702482
Aroba Khan, Yohei Yokoyama, Kiyoshi Tanaka
{"title":"Improved watermark sharing scheme using minimum error selection and shuffling","authors":"Aroba Khan, Yohei Yokoyama, Kiyoshi Tanaka","doi":"10.1109/PCS.2010.5702482","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702482","url":null,"abstract":"In this work, we focus on a watermark sharing scheme using error diffusion called DHCED, and try to overcome some drawbacks of this method. The proposed method simultaneously generates carrier halftone images that share the watermark information by selecting the minimum error caused in the noise function for watermark embedding. Also, the proposed method shuffles watermark image before embedding not only to increase the secracy of the embedded watermark information but also improve the watermark detection ratio as well as the watermark appearance in the detection process. We verify the superiority of the proposed method through computer simulation using some benchmark images.","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":"126970926","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
Image quality assessment based on local orientation distributions 基于局部方向分布的图像质量评价
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702485
Yue Wang, Tingting Jiang, Siwei Ma, Wen Gao
{"title":"Image quality assessment based on local orientation distributions","authors":"Yue Wang, Tingting Jiang, Siwei Ma, Wen Gao","doi":"10.1109/PCS.2010.5702485","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702485","url":null,"abstract":"Image quality assessment (IQA) is very important for many image and video processing applications, e.g. compression, archiving, restoration and enhancement. An ideal image quality metric should achieve consistency between image distortion prediction and psychological perception of human visual system (HVS). Inspired by that HVS is quite sensitive to image local orientation features, in this paper, we propose a new structural information based image quality metric, which evaluates image distortion by computing the distance of Histograms of Oriented Gradients (HOG) descriptors. Experimental results on LIVE database show that the proposed IQA metric is competitive with state-of-the-art IQA metrics, while keeping relatively low computing complexity.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"20 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":"114067853","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: 11
Subjective assessment of frame loss concealment methods in 3D video 三维视频中帧丢失隐藏方法的主观评价
28th Picture Coding Symposium Pub Date : 2010-12-01 DOI: 10.1109/PCS.2010.5702455
J. Carreira, Luís Pinto, Nuno M. M. Rodrigues, S. Faria, P. Assunção
{"title":"Subjective assessment of frame loss concealment methods in 3D video","authors":"J. Carreira, Luís Pinto, Nuno M. M. Rodrigues, S. Faria, P. Assunção","doi":"10.1109/PCS.2010.5702455","DOIUrl":"https://doi.org/10.1109/PCS.2010.5702455","url":null,"abstract":"This paper investigates the subjective impact resulting from different concealment methods for coping with lost frames in 3D video communication systems. It is assumed that a high priority channel is assigned to the main view and only the auxiliary view is subject to either transmission errors or packet loss, leading to missing frames at the decoder output. Three methods are used for frame concealment under different loss ratios. The results show that depth is well perceived by users and the subjective impact of frame loss not only depends on the concealment method but also exhibits high correlation with the disparity of the original sequence. It is also shown that under heavy loss conditions it is better to switch from 3D to 2D rather than presenting concealed 3D video to users.","PeriodicalId":255142,"journal":{"name":"28th Picture Coding Symposium","volume":"272 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":"115905596","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: 11
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