Pub Date : 2024-05-30DOI: 10.1109/tmm.2024.3407698
Linxia Zhu, Jun Cheng, Xu Wang, Honglei Su, Huan Yang, Hui Yuan, Jari Korhonen
{"title":"3DTA: No-Reference 3D Point Cloud Quality Assessment with Twin Attention","authors":"Linxia Zhu, Jun Cheng, Xu Wang, Honglei Su, Huan Yang, Hui Yuan, Jari Korhonen","doi":"10.1109/tmm.2024.3407698","DOIUrl":"https://doi.org/10.1109/tmm.2024.3407698","url":null,"abstract":"","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141198251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-30DOI: 10.1109/tmm.2024.3407697
Dan Zhang, Zhekai Du, Jingjing Li, Lei Zhu, Heng Tao Shen
{"title":"Domain-adaptive Energy-based Models for Generalizable Face Anti-Spoofing","authors":"Dan Zhang, Zhekai Du, Jingjing Li, Lei Zhu, Heng Tao Shen","doi":"10.1109/tmm.2024.3407697","DOIUrl":"https://doi.org/10.1109/tmm.2024.3407697","url":null,"abstract":"","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141198374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-27DOI: 10.1109/tmm.2024.3405664
Yanyang Xiao, Tieyi Zhang, Juan Cao, Zhonggui Chen
{"title":"Accelerated Lloyd's Method for Resampling 3D Point Clouds","authors":"Yanyang Xiao, Tieyi Zhang, Juan Cao, Zhonggui Chen","doi":"10.1109/tmm.2024.3405664","DOIUrl":"https://doi.org/10.1109/tmm.2024.3405664","url":null,"abstract":"","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":7.3,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hyperspectral image (HSI) clustering is challenging to divide all pixels into different clusters because of the absent labels, large spectral variability and complex spatial distribution. Anchor strategy provides an attractive solution to the computational bottleneck of graph-based clustering for large HSIs. However, most existing methods require separated learning procedures and ignore noisy as well as spatial information. In this paper, we propose a bipartite graph-based projected clustering (BGPC) method with local region guidance for HSI data. To take full advantage of spatial information, HSI denoising to alleviate noise interference and anchor initialization to construct bipartite graph are conducted within each generated superpixel. With the denoised pixels and initial anchors, projection learning and structured bipartite graph learning are simultaneously performed in a one-step learning model with connectivity constraint to directly provide clustering results. An alternating optimization algorithm is devised to solve the formulated model. The advantage of BGPC is the joint learning of projection and bipartite graph with local region guidance to exploit spatial information and linear time complexity to lessen computational burden. Extensive experiments demonstrate the superiority of the proposed BGPC over the state-of-the-art HSI clustering methods.
{"title":"Bipartite Graph-Based Projected Clustering With Local Region Guidance for Hyperspectral Imagery","authors":"Yongshan Zhang;Guozhu Jiang;Zhihua Cai;Yicong Zhou","doi":"10.1109/TMM.2024.3394975","DOIUrl":"10.1109/TMM.2024.3394975","url":null,"abstract":"Hyperspectral image (HSI) clustering is challenging to divide all pixels into different clusters because of the absent labels, large spectral variability and complex spatial distribution. Anchor strategy provides an attractive solution to the computational bottleneck of graph-based clustering for large HSIs. However, most existing methods require separated learning procedures and ignore noisy as well as spatial information. In this paper, we propose a bipartite graph-based projected clustering (BGPC) method with local region guidance for HSI data. To take full advantage of spatial information, HSI denoising to alleviate noise interference and anchor initialization to construct bipartite graph are conducted within each generated superpixel. With the denoised pixels and initial anchors, projection learning and structured bipartite graph learning are simultaneously performed in a one-step learning model with connectivity constraint to directly provide clustering results. An alternating optimization algorithm is devised to solve the formulated model. The advantage of BGPC is the joint learning of projection and bipartite graph with local region guidance to exploit spatial information and linear time complexity to lessen computational burden. Extensive experiments demonstrate the superiority of the proposed BGPC over the state-of-the-art HSI clustering methods.","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":8.4,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140831409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-30DOI: 10.1109/TMM.2024.3394971
Lin Zhang;Yifan Wang;Ran Song;Mingxin Zhang;Xiaolei Li;Wei Zhang
Recently, the source-free domain adaptation (SFDA) problem has attracted much attention, where the pre-trained model for the source domain is adapted to the target domain in the absence of source data. However, due to domain shift, the negative alignment usually exists between samples from the same class, which may lower intra-class feature similarity. To address this issue, we present a self-supervised representation learning strategy for SFDA, named as neighborhood-aware mutual information (NAMI), which maximizes the mutual information (MI) between the representations of target samples and their corresponding neighbors. Moreover, we theoretically demonstrate that NAMI can be decomposed into a weighted sum of local MI, which suggests that the weighted terms can better estimate NAMI. To this end, we introduce neighborhood consensus score over the set of weakly and strongly augmented views and point-wise density based on neighborhood, both of which determine the weights of local MI for NAMI by leveraging the neighborhood information of samples. The proposed method can significantly handle domain shift and adaptively reduce the noise in the neighborhood of each target sample. In combination with the consistency loss over views, NAMI leads to consistent improvement over existing state-of-the-art methods on three popular SFDA benchmarks.
最近，无源域适应（SFDA）问题引起了广泛关注，即在没有源数据的情况下，将源域的预训练模型适应到目标域。然而，由于领域偏移，同一类别的样本之间通常存在负配准，这可能会降低类内特征的相似性。为了解决这个问题，我们提出了一种用于 SFDA 的自监督表示学习策略，即邻域感知互信息（NAMI），它能最大化目标样本及其相应邻域的表示之间的互信息（MI）。此外，我们还从理论上证明了 NAMI 可以分解为局部 MI 的加权和，这表明加权项可以更好地估计 NAMI。为此，我们引入了弱增强视图和强增强视图集合上的邻域共识得分以及基于邻域的点密度，这两种方法都能利用样本的邻域信息来确定 NAMI 的局部 MI 权重。所提出的方法能显著处理域偏移，并自适应地降低每个目标样本邻域的噪声。结合对视图的一致性损失，NAMI 在三个流行的 SFDA 基准上实现了对现有先进方法的持续改进。
{"title":"Neighborhood-Aware Mutual Information Maximization for Source-Free Domain Adaptation","authors":"Lin Zhang;Yifan Wang;Ran Song;Mingxin Zhang;Xiaolei Li;Wei Zhang","doi":"10.1109/TMM.2024.3394971","DOIUrl":"10.1109/TMM.2024.3394971","url":null,"abstract":"Recently, the source-free domain adaptation (SFDA) problem has attracted much attention, where the pre-trained model for the source domain is adapted to the target domain in the absence of source data. However, due to domain shift, the negative alignment usually exists between samples from the same class, which may lower intra-class feature similarity. To address this issue, we present a self-supervised representation learning strategy for SFDA, named as neighborhood-aware mutual information (NAMI), which maximizes the mutual information (MI) between the representations of target samples and their corresponding neighbors. Moreover, we theoretically demonstrate that NAMI can be decomposed into a weighted sum of local MI, which suggests that the weighted terms can better estimate NAMI. To this end, we introduce neighborhood consensus score over the set of weakly and strongly augmented views and point-wise density based on neighborhood, both of which determine the weights of local MI for NAMI by leveraging the neighborhood information of samples. The proposed method can significantly handle domain shift and adaptively reduce the noise in the neighborhood of each target sample. In combination with the consistency loss over views, NAMI leads to consistent improvement over existing state-of-the-art methods on three popular SFDA benchmarks.","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":8.4,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140831488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-30DOI: 10.1109/TMM.2024.3394682
Sen Xu;Shikui Wei;Tao Ruan;Lixin Liao;Yao Zhao
Audio-visual segmentation (AVS) aims to segment the object instances that produce sound at the time of the video frames. Existing related solutions focus on designing cross-modal interaction mechanisms, which try to learn audio-visual correlations and simultaneously segment objects. Despite effectiveness, the close-coupling network structures become increasingly complex and hard to analyze. To address these problems, we propose a simple but effective method, ‘Each P erforms I ts F unctions (PIF),’ which focuses on task decomposition and feature assignment. Inspired by human sensory experiences, PIF decouples AVS into two subtasks, correlation learning, and segmentation refinement, via two branches. Correlation learning aims to learn the correspondence between sound and visible individuals and provide the positional prior. Segmentation refinement focuses on fine segmentation. Then we assign different level features to perform the appropriate duties, i.e., using deep features for cross-modal interaction due to their semantic advantages; using rich textures of shallow features to improve segmentation results. Moreover, we propose the recurrent collaboration block to enhance interbranch communication. Experimental results on AVSBench show that our method outperforms related state-of-the-art methods by a large margin (e.g., +6.0% mIoU and +7.6% F-score on the Multi-Source subset). In addition, by purposely boosting subtasks' performance, our approach can serve as a strong baseline for audio-visual segmentation.
{"title":"Each Performs Its Functions: Task Decomposition and Feature Assignment for Audio-Visual Segmentation","authors":"Sen Xu;Shikui Wei;Tao Ruan;Lixin Liao;Yao Zhao","doi":"10.1109/TMM.2024.3394682","DOIUrl":"10.1109/TMM.2024.3394682","url":null,"abstract":"Audio-visual segmentation (AVS) aims to segment the object instances that produce sound at the time of the video frames. Existing related solutions focus on designing cross-modal interaction mechanisms, which try to learn audio-visual correlations and simultaneously segment objects. Despite effectiveness, the close-coupling network structures become increasingly complex and hard to analyze. To address these problems, we propose a simple but effective method, ‘Each \u0000<underline>P</u>\u0000erforms \u0000<underline>I</u>\u0000ts \u0000<underline>F</u>\u0000unctions (PIF),’ which focuses on task decomposition and feature assignment. Inspired by human sensory experiences, PIF decouples AVS into two subtasks, correlation learning, and segmentation refinement, via two branches. Correlation learning aims to learn the correspondence between sound and visible individuals and provide the positional prior. Segmentation refinement focuses on fine segmentation. Then we assign different level features to perform the appropriate duties, i.e., using deep features for cross-modal interaction due to their semantic advantages; using rich textures of shallow features to improve segmentation results. Moreover, we propose the recurrent collaboration block to enhance interbranch communication. Experimental results on AVSBench show that our method outperforms related state-of-the-art methods by a large margin (e.g., +6.0% mIoU and +7.6% F-score on the Multi-Source subset). In addition, by purposely boosting subtasks' performance, our approach can serve as a strong baseline for audio-visual segmentation.","PeriodicalId":13273,"journal":{"name":"IEEE Transactions on Multimedia","volume":null,"pages":null},"PeriodicalIF":8.4,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140831411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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