Proceedings of the 19th ACM international conference on Multimedia最新文献_第9页

Positionit: an image-based remote target localization system on smartphones 定位:智能手机上基于图像的远程目标定位系统

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072476

Qia Wang, Alex Lobzhanidze, S. Roy, W. Zeng, Yi Shang

引用次数: 11

A real-time database architecture for motion capture data 动态捕捉数据的实时数据库架构

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072008

Pengjie Wang, Rynson W. H. Lau, Mingmin Zhang, Jiang Wang, Haiyu Song, Zhigeng Pan

{"title":"A real-time database architecture for motion capture data","authors":"Pengjie Wang, Rynson W. H. Lau, Mingmin Zhang, Jiang Wang, Haiyu Song, Zhigeng Pan","doi":"10.1145/2072298.2072008","DOIUrl":"https://doi.org/10.1145/2072298.2072008","url":null,"abstract":"Due to the popularity of motion capture data in many applications, such as games, movies and virtual environments, huge collections of motion capture data are now available. It is becoming important to store these data in compressed form while being able to retrieve them without much overhead. However, there is little work that addresses both issues together. In this paper, we address these two issues by proposing a novel database architecture. First, we propose a lossless compression algorithm to compress the motion clips, which is based on a novel Alpha Parallelogram Predictor (APP) to estimate the degree of freedom (DOF) of each child joint from its immediate neighbors and parents that have already been processed. Second, we propose to store selected eigenvalues and eigenvectors of each motion clip, which only require a very small amount of memory overheads, for faster filtering of irrelevant motions. Based on this architecture, real-time queries become a three-step process. In the first two steps, we perform a quick filtering to identify relevant motion clips in the database through a two-level indexing structure. In the third step, only a small number of candidate clips are uncompressed and accurately matched with a Dynamic Time Warping algorithm. Our results show that users can efficiently search clips from this losslessly compressed motion database.","PeriodicalId":318758,"journal":{"name":"Proceedings of the 19th ACM international conference on Multimedia","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123401745","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

Exploiting user information for image tag refinement 利用用户信息进行图像标记细化

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2071956

J. Sang, J. Liu, Changsheng Xu

引用次数: 15

Random partial paired comparison for subjective video quality assessment via hodgerank 基于hodgerank主观视频质量评价的随机偏配对比较

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072350

Qianqian Xu, Tingting Jiang, Y. Yao, Qingming Huang, Bowei Yan, Weisi Lin

{"title":"Random partial paired comparison for subjective video quality assessment via hodgerank","authors":"Qianqian Xu, Tingting Jiang, Y. Yao, Qingming Huang, Bowei Yan, Weisi Lin","doi":"10.1145/2072298.2072350","DOIUrl":"https://doi.org/10.1145/2072298.2072350","url":null,"abstract":"Subjective visual quality evaluation provides the groundtruth and source of inspiration in building objective visual quality metrics. Paired comparison is expected to yield more reliable results; however, this is an expensive and timeconsuming process. In this paper, we propose a novel framework of HodgeRank on Random Graphs (HRRG) to achieve efficient and reliable subjective Video Quality Assessment (VQA). To address the challenge of a potentially large number of combinations of videos to be assessed, the proposed methodology does not require the participants to perform the complete comparison of all the paired videos. Instead, participants only need to perform a random sample of all possible paired comparisons, which saves a great amount of time and labor. In contrast to the traditional deterministic incomplete block designs, our random design is not only suitable for traditional laboratory and focus-group studies, but also fit for crowdsourcing experiments on Internet where the raters are distributive over Internet and it is hard to control with precise experimental designs. Our contribution in this work is three-fold: 1) a HRRG framework is proposed to quantify the quality of video; 2) a new random design principle is investigated to conduct paired comparison based on Erdos-Renyi random graph theory; 3) Hodge decomposition is introduced to derive, from incomplete and imbalanced data, quality scores of videos and inconsistency of participants'judgments. We demonstrate the effectiveness of the proposed framework on LIVE Database. Equipped with random graph theory and HodgeRank, our scheme has the following advantages over the traditional ones: 1) data collection is simple and easy to handle, and thus is more suitable for crowdsourcing on Internet; 2) workload on participants is lower and more flexible; 3) the rating procedure is efficient, labor-saving, and more importantly, without jeopardizing the accuracy of the results.","PeriodicalId":318758,"journal":{"name":"Proceedings of the 19th ACM international conference on Multimedia","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130288224","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: 44

Hierarchical video browsing with a 3D carousel 分层视频浏览与3D旋转木马

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072479

Klaus Schöffmann, Manfred del Fabro

引用次数: 11

Active query sensing for mobile location search 主动查询感知移动位置搜索

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072301

Felix X. Yu, R. Ji, Shih-Fu Chang

{"title":"Active query sensing for mobile location search","authors":"Felix X. Yu, R. Ji, Shih-Fu Chang","doi":"10.1145/2072298.2072301","DOIUrl":"https://doi.org/10.1145/2072298.2072301","url":null,"abstract":"While much exciting progress is being made in mobile visual search, one important question has been left unexplored in all current systems. When the first query fails to find the right target (up to 50% likelihood), how should the user form his/her search strategy in the subsequent interaction? In this paper, we propose a novel Active Query Sensing system to suggest the best way for sensing the surrounding scenes while forming the second query for location search. We accomplish the goal by developing several unique components -- an offline process for analyzing the saliency of the views associated with each geographical location based on score distribution modeling, predicting the visual search precision of individual views and locations, estimating the view of an unseen query, and suggesting the best subsequent view change. Using a scalable visual search system implemented over a NYC street view data set (0.3 million images), we show a performance gain as high as two folds, reducing the failure rate of mobile location search to only 12% after the second query. This work may open up an exciting new direction for developing interactive mobile media applications through innovative exploitation of active sensing and query formulation.","PeriodicalId":318758,"journal":{"name":"Proceedings of the 19th ACM international conference on Multimedia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129276149","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: 51

Tennis real play: an interactive tennis game with models from real videos 网球真人游戏:一个互动的网球游戏与模型从真实的视频

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072361

Jui-Hsin Lai, Chieh-Li Chen, Po-Chen Wu, Chieh-Chi Kao, Shao-Yi Chien

{"title":"Tennis real play: an interactive tennis game with models from real videos","authors":"Jui-Hsin Lai, Chieh-Li Chen, Po-Chen Wu, Chieh-Chi Kao, Shao-Yi Chien","doi":"10.1145/2072298.2072361","DOIUrl":"https://doi.org/10.1145/2072298.2072361","url":null,"abstract":"Tennis Real Play (TRP) is an interactive tennis game system constructed with models extracted from videos of real matches. The key techniques proposed for TRP include player modeling and video-based player/court rendering. For player model creation, we propose a database normalization process and a behavioral transition model of tennis players, which might be a good alternative for motion capture in the conventional video games. For player/court rendering, we propose a framework for rendering vivid game characters and providing the real-time ability. We can say that image-based rendering leads to a more interactive and realistic rendering. Experiments show that video games with vivid viewing effects and characteristic players can be generated from match videos without much user intervention. Because the player model can adequately record the ability and condition of a player in the real world, it can then be used to roughly predict the results of real tennis matches in the next days. The results of a user study reveal that subjects like the increased interaction, immersive experience, and enjoyment from playing TRP.","PeriodicalId":318758,"journal":{"name":"Proceedings of the 19th ACM international conference on Multimedia","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129007889","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

Social image tag recommendation by concept matching 基于概念匹配的社会图像标签推荐

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2071969

Aixin Sun, S. Bhowmick, Jun-An Chong

引用次数: 37

Million-scale near-duplicate video retrieval system 百万级近复制视频检索系统

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2072484

Yang Cai, Linjun Yang, Wei Ping, Fei Wang, Tao Mei, Xiansheng Hua, Shipeng Li

引用次数: 42

Personalized portraits ranking 个性化画像排名

Proceedings of the 19th ACM international conference on Multimedia Pub Date : 2011-11-28 DOI: 10.1145/2072298.2071993

Lei Huang, Tian Xia, Ji Wan, Yongdong Zhang, Shouxun Lin

引用次数: 15