Proceedings of the 20th ACM international conference on Multimedia最新文献_第2页

Joint statistical analysis of images and keywords with applications in semantic image enhancement 图像与关键词的联合统计分析及其在语义图像增强中的应用

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2393417

Albrecht J. Lindner, Appu Shaji, Nicolas Bonnier, S. Süsstrunk

引用次数: 13

Session details: Full paper session 9: presentation and organization 会议细节:完整的论文会议9:演示和组织

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/3246402

Heng Tao Shen

引用次数: 0

Image annotation by semantic sparse recoding of visual content 基于视觉内容语义稀疏重编码的图像标注

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2393418

Zhiwu Lu, Yuxin Peng

{"title":"Image annotation by semantic sparse recoding of visual content","authors":"Zhiwu Lu, Yuxin Peng","doi":"10.1145/2393347.2393418","DOIUrl":"https://doi.org/10.1145/2393347.2393418","url":null,"abstract":"This paper presents a new semantic sparse recoding method to generate more descriptive and robust representation of visual content for image annotation. Although the visual bag-of-words (BOW) representation has been reported to achieve promising results in image annotation, its visual codebook is completely learnt from low-level visual features using quantization techniques and thus the so-called semantic gap remains unbridgeable. To handle such challenging issue, we utilize both the annotations of training images and the predicted annotations of test images to improve the original visual BOW representation. This is further formulated as a sparse coding problem so that the noise issue induced by the inaccurate quantization of visual features can also be handled to some extent. By developing an efficient sparse coding algorithm, we successfully generate a new visual BOW representation for image annotation. Since such sparse coding has actually incorporated the high-level semantic information into the original visual codebook, we thus consider it as semantic sparse recoding of the visual content. Although the predicted annotations of test images are also used as inputs by the traditional image annotation refinement, we focus on the visual BOW representation refinement for image annotation in this paper. The experimental results on two benchmark datasets show the superior performance of our semantic sparse recoding method in image annotation.","PeriodicalId":212654,"journal":{"name":"Proceedings of the 20th ACM international conference on Multimedia","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127032903","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

SymCity: feature selection by symmetry for large scale image retrieval SymCity:大规模图像检索的对称特征选择

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2393379

Giorgos Tolias, Yannis Kalantidis, Yannis Avrithis

引用次数: 14

Optimal semi-supervised metric learning for image retrieval 图像检索的最优半监督度量学习

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2396340

Kun Zhao, W. Liu, Jianzhuang Liu

引用次数: 6

Trajectory signature for action recognition in video 视频中动作识别的轨迹签名

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2396511

Nicolas Ballas, Bertrand Delezoide, F. Prêteux

引用次数: 8

Image colorization using similar images 使用相似的图像进行图像着色

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2393402

Raj Kumar Gupta, A. Chia, D. Rajan, Ee Sin Ng, Zhiyong Huang

{"title":"Image colorization using similar images","authors":"Raj Kumar Gupta, A. Chia, D. Rajan, Ee Sin Ng, Zhiyong Huang","doi":"10.1145/2393347.2393402","DOIUrl":"https://doi.org/10.1145/2393347.2393402","url":null,"abstract":"We present a new example-based method to colorize a gray image. As input, the user needs only to supply a reference color image which is semantically similar to the target image. We extract features from these images at the resolution of superpixels, and exploit these features to guide the colorization process. Our use of a superpixel representation speeds up the colorization process. More importantly, it also empowers the colorizations to exhibit a much higher extent of spatial consistency in the colorization as compared to that using independent pixels. We adopt a fast cascade feature matching scheme to automatically find correspondences between superpixels of the reference and target images. Each correspondence is assigned a confidence based on the feature matching costs computed at different steps in the cascade, and high confidence correspondences are used to assign an initial set of chromatic values to the target superpixels. To further enforce the spatial coherence of these initial color assignments, we develop an image space voting framework which draws evidence from neighboring superpixels to identify and to correct invalid color assignments. Experimental results and user study on a broad range of images demonstrate that our method with a fixed set of parameters yields better colorization results as compared to existing methods.","PeriodicalId":212654,"journal":{"name":"Proceedings of the 20th ACM international conference on Multimedia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127888922","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: 260

Constraint-optimized keypoint inhibition/insertion attack: security threat to scale-space image feature extraction 约束优化的关键点抑制/插入攻击:尺度空间图像特征提取的安全威胁

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2393434

Chun-Shien Lu, Chao-Yung Hsu

{"title":"Constraint-optimized keypoint inhibition/insertion attack: security threat to scale-space image feature extraction","authors":"Chun-Shien Lu, Chao-Yung Hsu","doi":"10.1145/2393347.2393434","DOIUrl":"https://doi.org/10.1145/2393347.2393434","url":null,"abstract":"Scale-space image feature extraction (SSIFE) has been widely adopted in broad areas due to its powerful resilience to attacks. However, the security threat to SSIFE-based applications, which will be addressed in this paper, is relatively unexplored. The security threat to SSIFT (called ST-SSIFE), composed of a constrained-optimization keypoint inhibition attack (KIHA) and a keypoint insertion attack (KISA), is specifically designed in this paper for scale-space feature extraction methods, such as SIFT and SURF. In ST-SSIFE, KIHA aims at making a fool of feature extraction protocols in that the detection rules are purposely violated so as to suppress the existence of a local maximum around a local region. We show that KIHA can be accomplished quickly via Lagrange multiplier but the resultant new keypoint generation (NKG) problem can be solved via Karush Kuhn Tucker (KKT) conditions. In order to leverage among keypoint removal with minimum distortion, suppression of NKG, and complexity, we further present a hybrid scheme of integrating Lagrange multiplier and KKT conditions. On the other hand, KISA is designed via an efficient coarse-to-fine descriptor matching strategy to yield fake feature points so as to create false positives. Experiments, conducted on keypoint removal rate evaluation and an image copy detection method operating on a web-scale image database as a case study, demonstrate the feasibility of our method.","PeriodicalId":212654,"journal":{"name":"Proceedings of the 20th ACM international conference on Multimedia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125622746","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: 9

Quicktoon: a real-time video stylization and sharing system on general processors Quicktoon:一个基于通用处理器的实时视频样式化和共享系统

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2396428

Hongsheng Yang, Huanliang Sun, Jiangbo Lu

引用次数: 0

Empathetic heartbeat 善解人意的心跳

Proceedings of the 20th ACM international conference on Multimedia Pub Date : 2012-10-29 DOI: 10.1145/2393347.2396530

H. Ando, J. Watanabe, Masahiko Sato

引用次数: 8