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Multimodal time series forecasting is crucial in real-world applications, where decisions depend on both numerical data and contextual signals. The core challenge is to effectively combine temporal numerical patterns with the context…

Machine Learning · Computer Science 2026-02-04 Huu Hiep Nguyen , Minh Hoang Nguyen , Dung Nguyen , Hung Le

We propose a novel few-shot action recognition framework, STRM, which enhances class-specific feature discriminability while simultaneously learning higher-order temporal representations. The focus of our approach is a novel spatio-temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Anirudh Thatipelli , Sanath Narayan , Salman Khan , Rao Muhammad Anwer , Fahad Shahbaz Khan , Bernard Ghanem

Offline Signature Verification (OSV) is a fundamental biometric task across various forensic, commercial and legal applications. The underlying task at hand is to carefully model fine-grained features of the signatures to distinguish…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Soumitri Chattopadhyay , Siladittya Manna , Saumik Bhattacharya , Umapada Pal

Handwritten signature verification is a crucial aspect of identity authentication, with applications in various domains such as finance and e-commerce. However, achieving high accuracy in signature verification remains challenging due to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Hai-jie Yuan , Heng Zhang , Fei Yin

Human-imitated speech poses a greater challenge than AI-generated speech for both human listeners and automatic detection systems. Unlike AI-generated speech, which often contains artifacts, over-smoothed spectra, or robotic cues, imitated…

Sound · Computer Science 2026-04-28 Khalid Zaman , Masashi Unoki

Phase-sensitive optical time-domain reflectometry {\Phi}-OTDR has emerged as a promising sensing technology in Internet of Things (IoT) infrastructures, enabling large-scale distributed acoustic sensing (DAS) for real-time monitoring at the…

Signal Processing · Electrical Eng. & Systems 2025-10-31 Xiyang Lan , Xin Li , Yinglei Teng

We have witnessed the discovery of many techniques for network representation learning in recent years, ranging from encoding the context in random walks to embedding the lower order connections, to finding latent space representations with…

Machine Learning · Computer Science 2017-10-10 Yanlei Yu , Zhiwu Lu , Jiajun Liu , Guoping Zhao , Ji-Rong Wen , Kai Zheng

Online handwritten Chinese text recognition (OHCTR) is a challenging problem as it involves a large-scale character set, ambiguous segmentation, and variable-length input sequences. In this paper, we exploit the outstanding capability of…

Computer Vision and Pattern Recognition · Computer Science 2017-05-26 Zecheng Xie , Zenghui Sun , Lianwen Jin , Hao Ni , Terry Lyons

Optical coherence tomography is state-of-the-art in non-invasive imaging of biological structures. Spectral Domain Optical Co-herence Tomography is the popularly used variation of this technique, but its performance is limited by the…

Optics · Physics 2023-03-01 Prabhav Gaur , Andrew Grieco , Yeshaiahu Fainman

Multi-modal human action segmentation is a critical and challenging task with a wide range of applications. Nowadays, the majority of approaches concentrate on the fusion of dense signals (i.e., RGB, optical flow, and depth maps). However,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Qi Liu , Xinchen Liu , Kun Liu , Xiaoyan Gu , Wu Liu

Handwritten signature verification poses a formidable challenge in biometrics and document authenticity. The objective is to ascertain the authenticity of a provided handwritten signature, distinguishing between genuine and forged ones.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Fatih Ozyurt , Jafar Majidpour , Tarik A. Rashid , Canan Koc

The remarkable success in face forgery techniques has received considerable attention in computer vision due to security concerns. We observe that up-sampling is a necessary step of most face forgery techniques, and cumulative up-sampling…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Honggu Liu , Xiaodan Li , Wenbo Zhou , Yuefeng Chen , Yuan He , Hui Xue , Weiming Zhang , Nenghai Yu

Optical coherence tomography (OCT) captures cross-sectional data and is used for the screening, monitoring, and treatment planning of retinal diseases. Technological developments to increase the speed of acquisition often results in systems…

Image and Video Processing · Electrical Eng. & Systems 2023-01-03 Timothy T. Yu , Da Ma , Jayden Cole , Myeong Jin Ju , Mirza F. Beg , Marinko V. Sarunic

Spectrograms visualize the frequency components of a given signal which may be an audio signal or even a time-series signal. Audio signals have higher sampling rate and high variability of frequency with time. Spectrograms can capture such…

Signal Processing · Electrical Eng. & Systems 2021-09-06 Sidharth Srivatsav Sribhashyam , Md Sirajus Salekin , Dmitry Goldgof , Ghada Zamzmi , Mark Last , Yu Sun

Occlusions between consecutive frames have long posed a significant challenge in optical flow estimation. The inherent ambiguity introduced by occlusions directly violates the brightness constancy constraint and considerably hinders…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Shangkun Sun , Jiaming Liu , Thomas H. Li , Huaxia Li , Guoqing Liu , Wei Gao

Self-supervised learning (SSL) has significantly advanced acoustic representation learning. However, most existing models are optimised for either speech or audio event understanding, resulting in a persistent gap between these two domains.…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-05 Xiaoyu Yang , Yifan Yang , Zengrui Jin , Ziyun Cui , Wen Wu , Baoxiang Li , Chao Zhang , Phil Woodland

Spectrum scarcity has surfaced as a prominent concern in wireless radio communications with the emergence of new technologies over the past few years. As a result, there is growing need for better understanding of the spectrum occupancy…

Machine Learning · Computer Science 2021-06-14 Bassel Al Homssi , Akram Al-Hourani , Zarko Krusevac , Wayne S T Rowe

The limited over-the-air (OTA) pilot symbols in multiple-input-multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) systems presents a major challenge for detecting transmitted data symbols at the receiver, especially for…

Signal Processing · Electrical Eng. & Systems 2023-10-10 Jiarui Xu , Lianjun Li , Lizhong Zheng , Lingjia Liu

Orbital angular momentum (OAM) multiplexing offers a promising approach to high-capacity optical communication by harnessing the orthogonality of vortex beams. However, its practical deployment is severely limited in real-world settings…

Currently, the prevalence of online handwriting has spurred a critical need for effective retrieval systems to accurately search relevant handwriting instances from specific writers, known as online writer retrieval. Despite the growing…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Peirong Zhang , Lianwen Jin