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Current temporal forgery localization (TFL) approaches typically rely on temporal boundary regression or continuous frame-level anomaly detection paradigms to derive candidate forgery proposals. However, they suffer not only from feature…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Tianyi Wang , Xi Shao , Harry Cheng , Yinglong Wang , Mohan Kankanhalli

Modern deepfakes have evolved into localized and intermittent manipulations that require fine-grained temporal localization to mitigate severe digital security risks. The prohibitive cost of frame-level annotation makes weakly supervised…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Midou Guo , Qilin Yin , Wei Lu , Rui Yang

Audio-Visual Event Localization (AVEL) is the task of temporally localizing and classifying \emph{audio-visual events}, i.e., events simultaneously visible and audible in a video. In this paper, we solve AVEL in a weakly-supervised setting,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Kalyan Ramakrishnan

The spread of Deepfake videos has caused a trust crisis and impaired social stability. Although numerous approaches have been proposed to address the challenges of Deepfake detection and localization, there is still a lack of systematic…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Wenbo Xu , Wei Lu , Xiangyang Luo

The rapid evolution of AIGC technology enables misleading viewers by tampering mere small segments within a video, rendering video-level detection inaccurate and unpersuasive. Consequently, temporal forgery localization (TFL), which aims to…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Boyang Zhao , Xin Liao , Jiaxin Chen , Xiaoshuai Wu , Yufeng Wu

Image forgery localization (IFL) is a crucial technique for preventing tampered image misuse and protecting social safety. However, due to the rapid development of image tampering technologies, extracting more comprehensive and accurate…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Ziqi Sheng , Wei Lu , Xiangyang Luo , Jiantao Zhou , Xiaochun Cao

The emergence of artificial intelligence-generated content (AIGC) has raised concerns about the authenticity of multimedia content in various fields. However, existing research for forgery content detection has focused mainly on binary…

Multimedia · Computer Science 2023-08-29 Rui Zhang , Hongxia Wang , Mingshan Du , Hanqing Liu , Yang Zhou , Qiang Zeng

Most research efforts in the multimedia forensics domain have focused on detecting forgery audio-visual content and reached sound achievements. However, these works only consider deepfake detection as a classification task and ignore the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Qilin Yin , Wei Lu , Xiangyang Luo , Xiaochun Cao

Noisy label problems are inevitably in existence within medical image segmentation causing severe performance degradation. Previous segmentation methods for noisy label problems only utilize a single image while the potential of leveraging…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Beilei Cui , Minqing Zhang , Mengya Xu , An Wang , Wu Yuan , Hongliang Ren

Temporal Forgery Localization (TFL) aims to precisely identify manipulated segments in video and audio, offering strong interpretability for security and forensics. While recent State Space Models (SSMs) show promise in precise temporal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Xiaodong Zhu , Suting Wang , Yuanming Zheng , Junqi Yang , Yangxu Liao , Yuhong Yang , Weiping Tu , Zhongyuan Wang

Image Forgery Localization (IFL) technology aims to detect and locate the forged areas in an image, which is very important in the field of digital forensics. However, existing IFL methods suffer from feature degradation during training…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Yakun Niu , Pei Chen , Lei Zhang , Lei Tan , Yingjian Chen

Image forgery localization aims to precisely identify tampered regions within images, but it commonly depends on costly pixel-level annotations. To alleviate this annotation burden, weakly supervised image forgery localization (WSIFL) has…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Ziqi Sheng , Junyan Wu , Wei Lu , Jiantao Zhou

Audio temporal forgery localization (ATFL) aims to find the precise forgery regions of the partial spoof audio that is purposefully modified. Existing ATFL methods rely on training efficient networks using fine-grained annotations, which…

Sound · Computer Science 2025-05-08 Junyan Wu , Wenbo Xu , Wei Lu , Xiangyang Luo , Rui Yang , Shize Guo

Weakly-supervised temporal action localization aims to locate action regions and identify action categories in untrimmed videos simultaneously by taking only video-level labels as the supervision. Pseudo label generation is a promising…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Wulian Yun , Mengshi Qi , Chuanming Wang , Huadong Ma

A cost-effective alternative to manual data labeling is weak supervision (WS), where data samples are automatically annotated using a predefined set of labeling functions (LFs), rule-based mechanisms that generate artificial labels for the…

Machine Learning · Computer Science 2024-01-05 Anastasiia Sedova , Benjamin Roth

Pre-trained Vision-Language Models (VLMs) exhibit strong zero-shot classification abilities, demonstrating great potential for generating weakly supervised labels. Unfortunately, existing weakly supervised learning methods are short of…

Machine Learning · Computer Science 2025-06-04 Zhongnian Li , Jinghao Xu , Peng Ying , Meng Wei , Xinzheng Xu

Temporal action localization (TAL) is a fundamental yet challenging task in video understanding. Existing TAL methods rely on pre-training a video encoder through action classification supervision. This results in a task discrepancy problem…

Computer Vision and Pattern Recognition · Computer Science 2021-11-01 Mengmeng Xu , Juan-Manuel Perez-Rua , Xiatian Zhu , Bernard Ghanem , Brais Martinez

Entity matching (EM) refers to the problem of identifying pairs of data records in one or more relational tables that refer to the same entity in the real world. Supervised machine learning (ML) models currently achieve state-of-the-art…

Databases · Computer Science 2022-11-15 Renzhi Wu , Alexander Bendeck , Xu Chu , Yeye He

We propose a novel algorithm for weakly supervised semantic segmentation based on image-level class labels only. In weakly supervised setting, it is commonly observed that trained model overly focuses on discriminative parts rather than the…

Computer Vision and Pattern Recognition · Computer Science 2018-01-09 Seunghoon Hong , Donghun Yeo , Suha Kwak , Honglak Lee , Bohyung Han

Weakly Supervised Temporal Action Localization (WSTAL) aims to localize and classify action instances in long untrimmed videos with only video-level category labels. Due to the lack of snippet-level supervision for indicating action…

Computer Vision and Pattern Recognition · Computer Science 2024-09-09 Jia-Run Du , Jia-Chang Feng , Kun-Yu Lin , Fa-Ting Hong , Xiao-Ming Wu , Zhongang Qi , Ying Shan , Wei-Shi Zheng
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