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  1. No Access

    Article

    Active site remodelling accompanies thioester bond formation in the SUMO E1

    E1 enzymes activate ubiquitin (Ub) and ubiquitin-like (Ubl) proteins in two steps by carboxy-terminal adenylation and thioester bond formation to a conserved catalytic cysteine in the E1 Cys domain. The struct...

    Shaun K. Olsen, Allan D. Capili, Xuequan Lu, Derek S. Tan, Christopher D. Lima in Nature (2010)

  2. No Access

    Chapter and Conference Paper

    Tag-Based Semantic Features for Scene Image Classification

    The existing image feature extraction methods are primarily based on the content and structure information of images, and rarely consider the contextual semantic information. Regarding some types of images suc...

    Chiranjibi Sitaula, Yong **ang, Anish Basnet, Sunil Aryal in Neural Information Processing (2019)

  3. No Access

    Chapter and Conference Paper

    Unsupervised Deep Features for Privacy Image Classification

    Sharing images online poses security threats to a wide range of users due to the unawareness of privacy information. Deep features have been demonstrated to be a powerful representation for images. However, d...

    Chiranjibi Sitaula, Yong **ang, Sunil Aryal, Xuequan Lu in Image and Video Technology (2019)

  4. No Access

    Chapter and Conference Paper

    A Cascaded Approach for Keyframes Extraction from Videos

    Keyframes extraction, a fundamental problem in video processing and analysis, has remained a challenge to date. In this paper, we introduce a novel method to effectively extract keyframes of a video. It consis...

    Yunhua Pei, Zhiyi Huang, Wenjie Yu, Meili Wang in Computer Animation and Social Agents (2020)

  5. No Access

    Chapter and Conference Paper

    Deep Detection for Face Manipulation

    It has become increasingly challenging to distinguish real faces from their visually realistic fake counterparts, due to the great advances of deep learning based face manipulation techniques in recent years. ...

    Disheng Feng, Xuequan Lu, Xufeng Lin in Neural Information Processing (2020)

  6. No Access

    Chapter and Conference Paper

    Deep Patch-Based Human Segmentation

    3D human segmentation has seen noticeable progress in recent years. It, however, still remains a challenge to date. In this paper, we introduce a deep patch-based method for 3D human segmentation. We first ext...

    Dongbo Zhang, Zheng Fang, Xuequan Lu, Hong Qin in Neural Information Processing (2020)

  7. Article

    Open Access

    G2MF-WA: Geometric multi-model fitting with weakly annotated data

    In this paper we address the problem of geometric multi-model fitting using a few weakly annotated data points, which has been little studied so far. In weak annotating (WA), most manual annotations are suppos...

    Chao Zhang, Xuequan Lu, Katsuya Hotta, ** Yang in Computational Visual Media (2020)

  8. Article

    Open Access

    Application of evolutionary and swarm optimization in computer vision: a literature survey

    Evolutionary algorithms (EAs) and swarm algorithms (SAs) have shown their usefulness in solving combinatorial and NP-hard optimization problems in various research fields. However, in the field of computer vis...

    Takumi Nakane, Naranchimeg Bold, Haitian Sun in IPSJ Transactions on Computer Vision and A… (2020)

  9. No Access

    Chapter and Conference Paper

    A Differential Privacy Mechanism for Deceiving Cyber Attacks in IoT Networks

    Protecting Internet of Things (IoT) network from private data breach is a grand challenge. Data breach may occur when networks’ statistical information is disclosed due to network scanning or data stored on th...

    Guizhen Yang, Mengmeng Ge, Shang Gao, Xuequan Lu in Network and System Security (2022)

  10. No Access

    Chapter and Conference Paper

    Anatomical Landmarks Localization for 3D Foot Point Clouds

    3D anatomical landmarks play an important role in health research. Their automated prediction/localization thus becomes a vital task. In this paper, we introduce a deformation method for 3D anatomical landmark...

    Sheldon Fung, Xuequan Lu, Mantas Mykolaitis, Imran Razzak in Neural Information Processing (2023)

  11. No Access

    Chapter and Conference Paper

    CAMG: Context-Aware Moment Graph Network for Multimodal Temporal Activity Localization via Language

    Temporal Activity Localization via Language (TALL) is a challenging task for language based video understanding, especially when a video contains multiple moments of interest and the language query has words d...

    Yuelin Hu, Yuanwu Xu, Yuejie Zhang, Rui Feng in Natural Language Processing and Chinese Co… (2023)

  12. Article

    Open Access

    Towards uniform point distribution in feature-preserving point cloud filtering

    While a popular representation of 3D data, point clouds may contain noise and need filtering before use. Existing point cloud filtering methods either cannot preserve sharp features or result in uneven point d...

    Shuaijun Chen, **xi Wang, Wei Pan, Shang Gao, Meili Wang in Computational Visual Media (2023)

  13. No Access

    Article

    Unsupervised contrastive learning with simple transformation for 3D point cloud data

    Though a number of point cloud learning methods have been proposed to handle unordered points, most of them are supervised and require labels for training. By contrast, unsupervised learning of point cloud dat...

    **cen Jiang, Xuequan Lu, Wanli Ouyang, Meili Wang in The Visual Computer (2023)

  14. No Access

    Article

    Segmentation-driven feature-preserving mesh denoising

    Feature-preserving mesh denoising has received noticeable attention in visual media, with the aim of recovering high-fidelity, clean mesh shapes from the ones that are contaminated by noise. Existing denoising...

    Weijia Wang, Wei Pan, Chaofan Dai, Richard Dazeley, Lei Wei in The Visual Computer (2023)

  15. Article

    Open Access

    3D face recognition: A comprehensive survey in 2022

    In the past ten years, research on face recognition has shifted to using 3D facial surfaces, as 3D geometric information provides more discriminative features. This comprehensive survey reviews 3D face recogni...

    Ya** **g, Xuequan Lu, Shang Gao in Computational Visual Media (2023)

  16. No Access

    Chapter and Conference Paper

    TopFormer: Topology-Aware Transformer for Point Cloud Registration

    The extraction of robust feature descriptors is crucial for achieving accurate point cloud registration. While the attention mechanism plays an important role in enabling sparse point features to learn global ...

    Sheldon Fung, Wei Pan, **ao Liu, John Yearwood in Computational Visual Media (2024)

  17. Article

    Open Access

    Single-stage object detector with attention mechanism for squamous cell carcinoma feature detection using histopathological images

    Squamous cell carcinoma is the most common type of cancer that occurs in squamous cells of epithelial tissue. Histopathological evaluation of tissue samples is the gold standard approach used for carcinoma dia...

    Swathi Prabhu, Keerthana Prasad, Xuequan Lu in Multimedia Tools and Applications (2024)

  18. No Access

    Article

    Veintr: robust end-to-end full-hand vein identification with transformer

    Hand vein identification stands out to be an increasingly popular approach for biometric identification due to its distinctiveness and convenience. While state-of-the-art techniques are able to achieve good pe...

    Shenglin Lu, Sheldon Fung, Wei Pan, Nilmini Wickramasinghe in The Visual Computer (2024)

  19. Article

    Open Access

    Noise4Denoise: Leveraging noise for unsupervised point cloud denoising

    Existing deep learning-based point cloud denoising methods are generally trained in a supervised manner that requires clean data as ground-truth labels. However, in practice, it is not always feasible to obtai...

    Weijia Wang, **ao Liu, Hailing Zhou, Lei Wei, Zhigang Deng in Computational Visual Media (2024)