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学者姓名：王美清
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由于细粒度图像之间存在小的类间方差和大的类内差异,现有分类算法仅仅聚焦于单张图像的显著局部特征的提取与表示学习,忽视了多张图像之间局部的异构语义判别信息,较难关注到区分不同类别的微小细节,导致学习到的特征缺乏足够区分度.本文提出了一种渐进式网络以弱监督的方式学习图像不同粒度层级的信息.首先,构建一个注意力累计目标定位模块(Attention accumulation object localization module, AAOLM),在单张图像上从不同的训练轮次和特征提取阶段对注意力信息进行语义目标集成定位.其次,设计一个多张图像异构局部交互图模块(Heterogeneous local interactive graph module, HLIGM),提取每张图像的显著性局部区域特征,在类别标签引导下构建多张图像的局部区域特征之间的图网络,聚合局部特征增强表示的判别力.最后,利用知识蒸馏将异构局部交互图模块产生的优化信息反馈给主干网络,从而能够直接提取具有较强区分度的特征,避免了在测试阶段建图的计算开销.通过在多个数据集上进行的实验,证明了提出方法的有效性,能够提高细粒度分类的精度.
Keyword ：
图神经网络 图神经网络 弱监督目标定位 弱监督目标定位 深度学习 深度学习 知识蒸馏 知识蒸馏 细粒度图像分类 细粒度图像分类
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| GB/T 7714 | 陈权 , 陈飞 , 王衍根 et al. 融合目标定位与异构局部交互学习的细粒度图像分类 [J]. | 自动化学报 , 2024 , 50 (11) : 2219-2230 . |
| MLA | 陈权 et al. "融合目标定位与异构局部交互学习的细粒度图像分类" . | 自动化学报 50 . 11 (2024) : 2219-2230 . |
| APA | 陈权 , 陈飞 , 王衍根 , 程航 , 王美清 . 融合目标定位与异构局部交互学习的细粒度图像分类 . | 自动化学报 , 2024 , 50 (11) , 2219-2230 . |
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高强度的高斯噪声往往会模糊或破坏图像的细节和结构,导致边缘信息的丢失.为此,提出基于逐像素强化学习的边缘保持图像复原算法.首先,为每个像素构建一个像素层智能体并设计针对边缘处的侧窗均值滤波器到动作空间中,所有的像素层智能体共享优势行动者-评论家算法的参数,因此模型可以同时输出所有位置的状态转移概率并选择合适的策略进行状态转移,从而复原图像;其次,在特征提取共享网络中结合协调注意力,聚焦所有像素位置在特征通道间的全局信息,并保留位置嵌入信息;然后,为了缓解稀疏奖励问题,设计一个基于图拉普拉斯正则的辅助损失,关注图像的局部平滑信息,对局部不平滑区域加以惩罚,从而促进像素层智能体更加有效地学习到正确的策略以实现边缘保持.实验结果表明,所提的算法在Middlebury2005数据集和MNIST数据集上的峰值信噪比(PSNR)分别达到32.97 dB和28.26 dB,相比于Pixel-RL算法分别提升了 0.23 dB和0.75 dB,参数量和训练总时间分别减少了 44.9％和18.2％,在实现边缘保持的同时有效降低了模型的复杂度.
Keyword ：
协调注意力 协调注意力 图像复原 图像复原 图拉普拉斯 图拉普拉斯 深度强化学习 深度强化学习 边缘保持 边缘保持 逐像素强化学习 逐像素强化学习
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| GB/T 7714 | 江敏 , 陈飞 , 程航 et al. 基于逐像素强化学习的边缘保持图像复原 [J]. | 计算机工程 , 2024 , 50 (12) : 224-232 . |
| MLA | 江敏 et al. "基于逐像素强化学习的边缘保持图像复原" . | 计算机工程 50 . 12 (2024) : 224-232 . |
| APA | 江敏 , 陈飞 , 程航 , 王美清 . 基于逐像素强化学习的边缘保持图像复原 . | 计算机工程 , 2024 , 50 (12) , 224-232 . |
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Federated Learning, as a typical paradigm of collaborative learning, effectively mediates the contradictions between model training and data privacy. However, the data heterogeneity and privacy leakage problems undermine the availability of federated learning. Existing studies focus solely on one of the problems. In this work, we manage to handle these two challenges simultaneously, by utilizing contrastive learning and differential privacy in local training, the federated learning system can stay safe and robust. The contrastive loss item pushes the local model towards the global model and a random noise generated by differential privacy is added to the model to protect the sensitive information hidden in the models. Extensive experiment results demonstrate that our method can exceed the baseline around 1%2% in term of test accuracy. © 2024 IEEE.
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| GB/T 7714 | Liu, P. , Xu, Y. , Wang, M. et al. Model Level Contrastive Federated Learning with Differential Privacy [未知]. |
| MLA | Liu, P. et al. "Model Level Contrastive Federated Learning with Differential Privacy" [未知]. |
| APA | Liu, P. , Xu, Y. , Wang, M. , Cao, P. . Model Level Contrastive Federated Learning with Differential Privacy [未知]. |
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Due to enormous computing and storage overhead for well-trained Deep Neural Network (DNN) models, protecting the intellectual property of model owners is a pressing need. As the commercialization of deep models is becoming increasingly popular, the pre-trained models delivered to users may suffer from being illegally copied, redistributed, or abused. In this paper, we propose DeepDIST, the first end-to-end secure DNNs distribution framework in a black-box scenario. Specifically, our framework adopts a dual-level fingerprint (FP) mechanism to provide reliable ownership verification, and proposes two equivalent transformations that can resist collusion attacks, plus a newly designed similarity loss term to improve the security of the transformations. Unlike the existing passive defense schemes that detect colluding participants, we introduce an active defense strategy, namely damaging the performance of the model after the malicious collusion. The extensive experimental results show that DeepDIST can maintain the accuracy of the host DNN after embedding fingerprint conducted for true traitor tracing, and is robust against several popular model modifications. Furthermore, the anti-collusion effect is evaluated on two typical classification tasks (10-class and 100-class), and the proposed DeepDIST can drop the prediction accuracy of the collusion model to 10% and 1% (random guess), respectively.
Keyword ：
anti-collusion anti-collusion Deep neural networks Deep neural networks digital fingerprinting digital fingerprinting digital watermarking digital watermarking
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| GB/T 7714 | Cheng, Hang , Li, Xibin , Wang, Huaxiong et al. DeepDIST: A Black-Box Anti-Collusion Framework for Secure Distribution of Deep Models [J]. | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY , 2024 , 34 (1) : 97-109 . |
| MLA | Cheng, Hang et al. "DeepDIST: A Black-Box Anti-Collusion Framework for Secure Distribution of Deep Models" . | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 34 . 1 (2024) : 97-109 . |
| APA | Cheng, Hang , Li, Xibin , Wang, Huaxiong , Zhang, Xinpeng , Liu, Ximeng , Wang, Meiqing et al. DeepDIST: A Black-Box Anti-Collusion Framework for Secure Distribution of Deep Models . | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY , 2024 , 34 (1) , 97-109 . |
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Image steganography attempts to imperceptibly hide the secret image within the cover image. Most of the existing deep learning -based steganography approaches have excelled in payload capacity, visual quality, and steganographic security. However, they are difficult to losslessly reconstruct secret images from stego images with relatively large payload capacity. Recently, although some studies have introduced invertible neural networks (INNs) to achieve largecapacity image steganography, these methods still cannot reconstruct the secret image losslessly due to the existence of lost information on the output side of the concealing network. We present an INN -based framework in this paper for lossless image steganography. Specifically, we regard image steganography as an image super -resolution task that converts low -resolution cover images to high -resolution stego images while hiding secret images. The feature dimension of the generated stego image matches the total dimension of the input secret and cover images, thereby eliminating the lost information. Besides, a bijective secret projection module is designed to transform various secret images into a latent variable that follows a simple distribution, improving the imperceptibility of the secret image. Comprehensive experiments indicate that the proposed framework achieves secure hiding and lossless extraction of the secret image.
Keyword ：
Covert communication Covert communication Information security Information security Invertible neural networks Invertible neural networks Lossless steganography Lossless steganography
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| GB/T 7714 | Wang, Tingqiang , Cheng, Hang , Liu, Ximeng et al. Lossless image steganography: Regard steganography as super-resolution [J]. | INFORMATION PROCESSING & MANAGEMENT , 2024 , 61 (4) . |
| MLA | Wang, Tingqiang et al. "Lossless image steganography: Regard steganography as super-resolution" . | INFORMATION PROCESSING & MANAGEMENT 61 . 4 (2024) . |
| APA | Wang, Tingqiang , Cheng, Hang , Liu, Ximeng , Xu, Yongliang , Chen, Fei , Wang, Meiqing et al. Lossless image steganography: Regard steganography as super-resolution . | INFORMATION PROCESSING & MANAGEMENT , 2024 , 61 (4) . |
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针对一般深度学习方法求解非线性偏微分方程时泛化能力差的问题，提出一种使用改进欧拉法联通网络模块的长短期卷积循环神经网络.该神经网络的构建运用改进欧拉法和有限差分法，通过改进欧拉法实现网络中模块之间的有效连接.基于有限差分法构建的卷积核实现偏微分方程中涉及的导数项的精确近似，并在Burgers方程和λ-ω反应扩散方程上进行仿真实验.实验结果证明，该方法不但在训练数据上具有很高的精度，而且在外推到新领域时也表现出较强的泛化能力.
Keyword ：
偏微分方程 偏微分方程 改进欧拉法 改进欧拉法 有限差分法 有限差分法 深度学习 深度学习 长短期记忆 长短期记忆
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| GB/T 7714 | 黄冠男 , 王靖岳 , 王美清 . 基于改进欧拉法的非线性偏微分方程神经网络求解器 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (04) : 396-403 . |
| MLA | 黄冠男 et al. "基于改进欧拉法的非线性偏微分方程神经网络求解器" . | 福州大学学报(自然科学版) 52 . 04 (2024) : 396-403 . |
| APA | 黄冠男 , 王靖岳 , 王美清 . 基于改进欧拉法的非线性偏微分方程神经网络求解器 . | 福州大学学报(自然科学版) , 2024 , 52 (04) , 396-403 . |
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The health-related Internet of Things (IoT) plays an irreplaceable role in the collection, analysis, and transmission of medical data. As a device of the health-related IoT, the electroencephalogram (EEG) has long been a powerful tool for physiological and clinical brain research, which contains a wealth of personal information. Due to its rich computational/storage resources, cloud computing is a promising solution to extract the sophisticated feature of massive EEG signals in the age of big data. However, it needs to solve both response latency and privacy leakage. To reduce latency between users and servers while ensuring data privacy, we propose a privacy-preserving feature extraction scheme, called LightPyFE, for EEG signals in the edge computing environment. In this scheme, we design an outsourced computing toolkit, which allows the users to achieve a series of secure integer and floating-point computing operations. During the implementation, LightPyFE can ensure that the users just perform the encryption and decryption operations, where all computing tasks are outsourced to edge servers for specific processing. Theoretical analysis and experimental results have demonstrated that our scheme can successfully achieve privacy-preserving feature extraction for EEG signals, and is practical yet effective.
Keyword ：
Additive secret sharing Additive secret sharing edge computing edge computing electroencephalogram (EEG) signal electroencephalogram (EEG) signal Internet of Things (IoT) Internet of Things (IoT) privacy-preserving privacy-preserving
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| GB/T 7714 | Yan, Nazhao , Cheng, Hang , Liu, Ximeng et al. Lightweight Privacy-Preserving Feature Extraction for EEG Signals Under Edge Computing [J]. | IEEE INTERNET OF THINGS JOURNAL , 2024 , 11 (2) : 2520-2533 . |
| MLA | Yan, Nazhao et al. "Lightweight Privacy-Preserving Feature Extraction for EEG Signals Under Edge Computing" . | IEEE INTERNET OF THINGS JOURNAL 11 . 2 (2024) : 2520-2533 . |
| APA | Yan, Nazhao , Cheng, Hang , Liu, Ximeng , Chen, Fei , Wang, Meiqing . Lightweight Privacy-Preserving Feature Extraction for EEG Signals Under Edge Computing . | IEEE INTERNET OF THINGS JOURNAL , 2024 , 11 (2) , 2520-2533 . |
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Image denoising is a fundamental tool in the fields of image processing and computer vision. With the rapid development of multimedia and cloud computing, it has become popular for resource-constrained users to outsource the storage and denoising of massive images. However, it may cause privacy concerns and response delays. In this scenario, we propose an efFicient privAcy-preseRving Image deNoising schEme (FARINE) for outsourcing digital images. By introducing a key conversion mechanism, FARINE allows removing noise from a given noisy image using a non-local mean way without leaking any information about the plaintext content. Due to its low computational latency/communication cost, edge computing is considered to improve the user experience. To achieve a dynamic user set efficiently, we design a fine-grained access control mechanism to support user authorization and revocation in multi-user scenarios. Extensive experiments over several benchmark data sets show that FARINE obtains comparable performance to plaintext image denoising.
Keyword ：
access control access control edge computing edge computing homomorphic encryption homomorphic encryption image denoising image denoising Privacy-preserving Privacy-preserving
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| GB/T 7714 | Huang, Yibing , Xu, Yongliang , Cheng, Hang et al. Edge-based secure image denoising scheme supporting flexible user authorization [J]. | JOURNAL OF ALGORITHMS & COMPUTATIONAL TECHNOLOGY , 2024 , 18 . |
| MLA | Huang, Yibing et al. "Edge-based secure image denoising scheme supporting flexible user authorization" . | JOURNAL OF ALGORITHMS & COMPUTATIONAL TECHNOLOGY 18 (2024) . |
| APA | Huang, Yibing , Xu, Yongliang , Cheng, Hang , Chen, Fei , Wang, Meiqing . Edge-based secure image denoising scheme supporting flexible user authorization . | JOURNAL OF ALGORITHMS & COMPUTATIONAL TECHNOLOGY , 2024 , 18 . |
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Existing vision-language pre-training models typically extract region features and conduct fine-grained local alignment based on masked image/text completion or object detection methods. However, these models often design independent subtasks for different modalities, which may not adequately leverage interactions between modalities, requiring large datasets to achieve optimal performance. To address these limitations, this paper introduces a novel pre-training approach that facilitates fine-grained vision-language interaction. We propose two new subtasks — image filling and text filling — that utilize data from one modality to complete missing parts in another, enhancing the model's ability to integrate multi-modal information. A selector mechanism is also developed to minimize semantic overlap between modalities, thereby improving the efficiency and effectiveness of the pre-trained model. Our comprehensive experimental results demonstrate that our approach not only fosters better semantic associations among different modalities but also achieves state-of-the-art performance on downstream vision-language tasks with significantly smaller datasets. © 2024 Elsevier Ltd
Keyword ：
Cross-modal Cross-modal Image captioning Image captioning Partial auxiliary Partial auxiliary Pre-training Pre-training
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| GB/T 7714 | Cheng, H. , Ye, H. , Zhou, X. et al. Vision-language pre-training via modal interaction [J]. | Pattern Recognition , 2024 , 156 . |
| MLA | Cheng, H. et al. "Vision-language pre-training via modal interaction" . | Pattern Recognition 156 (2024) . |
| APA | Cheng, H. , Ye, H. , Zhou, X. , Liu, X. , Chen, F. , Wang, M. . Vision-language pre-training via modal interaction . | Pattern Recognition , 2024 , 156 . |
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In image registration or image matching, the feature extracted by using the traditional methods does not include the depth information which may lead to a mismatch of keypoints. In this paper, we prove that when the camera moves, the ratio of the depth difference of a keypoint and its neighbor pixel before and after the camera movement approximates a constant. That means the depth difference of a keypoint and its neighbor pixel after normalization is invariant to the camera movement. Based on this property, all the depth differences of a keypoint and its neighbor pixels constitute a local depth-based feature, which can be used as a supplement of the traditional feature. We combine the local depth-based feature with the SIFT feature descriptor to form a new feature descriptor, and the experimental results show the feasibility and effectiveness of the new feature descriptor.
Keyword ：
depth map depth map image registration image registration keypoint match keypoint match SIFT SIFT
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| GB/T 7714 | Yang, Erbing , Chen, Fei , Wang, Meiqing et al. Local Property of Depth Information in 3D Images and Its Application in Feature Matching [J]. | MATHEMATICS , 2023 , 11 (5) . |
| MLA | Yang, Erbing et al. "Local Property of Depth Information in 3D Images and Its Application in Feature Matching" . | MATHEMATICS 11 . 5 (2023) . |
| APA | Yang, Erbing , Chen, Fei , Wang, Meiqing , Cheng, Hang , Liu, Rong . Local Property of Depth Information in 3D Images and Its Application in Feature Matching . | MATHEMATICS , 2023 , 11 (5) . |
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