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Contour detection has been a fundamental component in many image segmentation and object detection systems. Most previous work utilizes low-level features such as texture or saliency to detect contours and then use them as cues for a…

Computer Vision and Pattern Recognition · Computer Science 2015-04-24 Gedas Bertasius , Jianbo Shi , Lorenzo Torresani

The revolution in computer hardware, especially in graphics processing units and tensor processing units, has enabled significant advances in computer graphics and artificial intelligence algorithms. In addition to their many beneficial…

Computer Vision and Pattern Recognition · Computer Science 2019-10-30 Huy H. Nguyen , Junichi Yamagishi , Isao Echizen

We present a data generation framework designed to simulate spoofing attacks and randomly place attack scenarios worldwide. We apply deep neural network-based models for spoofing detection, utilizing Long Short-Term Memory networks and…

Cryptography and Security · Computer Science 2025-10-24 Jan Zelinka , Oliver Kost , Marek Hrúz

The rapid advancements of generative AI have fueled the potential of generative text image editing, meanwhile escalating the threat of misinformation spreading. However, existing forensics methods struggle to detect unseen forgery types…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Chenfan Qu , Yiwu Zhong , Fengjun Guo , Lianwen Jin

Conventional video models rely on a single stream to capture the complex spatial-temporal features. Recent work on two-stream video models, such as SlowFast network and AssembleNet, prescribe separate streams to learn complementary…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Xinyu Gong , Heng Wang , Zheng Shou , Matt Feiszli , Zhangyang Wang , Zhicheng Yan

Anomaly detection is critical for finding suspicious behavior in innumerable systems. We need to detect anomalies in real-time, i.e. determine if an incoming entity is anomalous or not, as soon as we receive it, to minimize the effects of…

Machine Learning · Computer Science 2023-01-31 Siddharth Bhatia

This paper proposes a novel method for tamper detection and recovery using semi-fragile data hiding, based on Lifting Wavelet Transform (LWT) and Feed-Forward Neural Network (FNN). In TRLF, first, the host image is decomposed up to one…

Cryptography and Security · Computer Science 2018-02-21 Behrouz Bolourian Haghighi , Amir Hossein Taherinia , Reza Monsefi

Face parsing is a basic task in face image analysis. It amounts to labeling each pixel with appropriate facial parts such as eyes and nose. In the paper, we present a interlinked convolutional neural network (iCNN) for solving this problem…

Computer Vision and Pattern Recognition · Computer Science 2018-06-08 Yisu Zhou , Xiaolin Hu , Bo Zhang

In this paper, we address the problem of image splicing localization with a multi-stream network architecture that processes the raw RGB image in parallel with other handcrafted forensic signals. Unlike previous methods that either use only…

Computer Vision and Pattern Recognition · Computer Science 2022-12-05 Maria Siopi , Giorgos Kordopatis-Zilos , Polychronis Charitidis , Ioannis Kompatsiaris , Symeon Papadopoulos

Bipartite networks manifest as a stream of edges that represent transactions, e.g., purchases by retail customers. Many machine learning applications employ neighborhood-based measures to characterize the similarity among the nodes, such as…

Social and Information Networks · Computer Science 2018-05-09 Nesreen K. Ahmed , Nick Duffield , Liangzhen Xia

As neural networks become able to generate realistic artificial images, they have the potential to improve movies, music, video games and make the internet an even more creative and inspiring place. Yet, the latest technology potentially…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Moritz Wolter , Felix Blanke , Raoul Heese , Jochen Garcke

Anti-spoofing detection has become a necessity for face recognition systems due to the security threat posed by spoofing attacks. Despite great success in traditional attacks, most deep-learning-based methods perform poorly in 3D masks,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Yuxin Cao , Yian Li , Yumeng Zhu , Derui Wang , Minhui Xue

With the increasing variations of face presentation attacks, model generalization becomes an essential challenge for a practical face anti-spoofing system. This paper presents a generalized face anti-spoofing framework that consists of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Chu-Chun Chuang , Chien-Yi Wang , Shang-Hong Lai

Automating the analysis of imagery of the Gastrointestinal (GI) tract captured during endoscopy procedures has substantial potential benefits for patients, as it can provide diagnostic support to medical practitioners and reduce mistakes…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Harshala Gammulle , Simon Denman , Sridha Sridharan , Clinton Fookes

In the current era, biometric based access control is becoming more popular due to its simplicity and ease to use by the users. It reduces the manual work of identity recognition and facilitates the automatic processing. The face is one of…

Computer Vision and Pattern Recognition · Computer Science 2019-03-28 Chaitanya Nagpal , Shiv Ram Dubey

It is increasingly easy to automatically swap faces in images and video or morph two faces into one using generative adversarial networks (GANs). The high quality of the resulted deep-morph raises the question of how vulnerable the current…

Computer Vision and Pattern Recognition · Computer Science 2019-10-07 Pavel Korshunov , Sébastien Marcel

The increasing prevalence of computer vision applications necessitates handling vast amounts of visual data, often containing personal information. While this technology offers significant benefits, it should not compromise privacy. Data…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Mustafa İzzet Muştu , Hazım Kemal Ekenel

Tracking user reported bugs requires considerable engineering effort in going through many repetitive reports and assigning them to the correct teams. This paper proposes a neural architecture that can jointly (1) detect if two bug reports…

Computation and Language · Computer Science 2019-04-05 Lahari Poddar , Leonardo Neves , William Brendel , Luis Marujo , Sergey Tulyakov , Pradeep Karuturi

Blind deblurring consists a long studied task, however the outcomes of generic methods are not effective in real world blurred images. Domain-specific methods for deblurring targeted object categories, e.g. text or faces, frequently…

Computer Vision and Pattern Recognition · Computer Science 2017-05-26 Grigorios G. Chrysos , Stefanos Zafeiriou

We present a multi-filtering Graph Convolution Neural Network (GCN) framework for network embedding task. It uses multiple local GCN filters to do feature extraction in every propagation layer. We show this approach could capture different…

Machine Learning · Computer Science 2020-04-06 Tingyi Wanyan , Chenwei Zhang , Ariful Azad , Xiaomin Liang , Daifeng Li , Ying Ding