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Unveiling the real appearance of retouched faces to prevent malicious users from deceptive advertising and economic fraud has been an increasing concern in the era of digital economics. This article makes the first attempt to investigate…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Fengchuang Xing , Xiaowen Shi , Yuan-Gen Wang , Chunsheng Yang

Face recognition systems experience severe performance degradation when processing low-quality forensic evidence imagery. This paper presents an evaluation of latent diffusion-based enhancement for improving face recognition under…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Hassan Ugail , Hamad Mansour Alawar , AbdulNasser Abbas Zehi , Ahmed Mohammad Alkendi , Ismail Lujain Jaleel

In supervised image restoration tasks, one key issue is how to obtain the aligned high-quality (HQ) and low-quality (LQ) training image pairs. Unfortunately, such HQ-LQ training pairs are hard to capture in practice, and hard to synthesize…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Tao Yang , Peiran Ren , Xuansong xie , Lei Zhang

In recent years, Face Image Quality Assessment (FIQA) has become an indispensable part of the face recognition system to guarantee the stability and reliability of recognition performance in an unconstrained scenario. For this purpose, the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Fu-Zhao Ou , Xingyu Chen , Ruixin Zhang , Yuge Huang , Shaoxin Li , Jilin Li , Yong Li , Liujuan Cao , Yuan-Gen Wang

The rapid evolution of deepfake technologies demands robust and reliable face forgery detection algorithms. While determining whether an image has been manipulated remains essential, the ability to precisely localize forgery clues is also…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Siran Peng , Haoyuan Zhang , Li Gao , Tianshuo Zhang , Xiangyu Zhu , Bao Li , Weisong Zhao , Zhen Lei

The design of image and video quality assessment (QA) algorithms is extremely important to benchmark and calibrate user experience in modern visual systems. A major drawback of the state-of-the-art QA methods is their limited ability to…

Image and Video Processing · Electrical Eng. & Systems 2025-12-30 Shankhanil Mitra , Diptanu De , Shika Rao , Rajiv Soundararajan

Advances in microscopy imaging enable researchers to visualize structures at the nanoscale level thereby unraveling intricate details of biological organization. However, challenges such as image noise, photobleaching of fluorophores, and…

Image and Video Processing · Electrical Eng. & Systems 2024-09-19 Pamela Osuna-Vargas , Maren H. Wehrheim , Lucas Zinz , Johanna Rahm , Ashwin Balakrishnan , Alexandra Kaminer , Mike Heilemann , Matthias Kaschube

Face Image Quality Assessment (FIQA) evaluates the utility of a face image for automated face recognition (FR) systems. In this work, we propose PreFIQs, an unsupervised and training-free FIQA framework grounded in the Pruning Identified…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Jan Niklas Kolf , Guray Ozgur , Andrea Atzori , Žiga Babnik , Vitomir Štruc , Naser Damer , Fadi Boutros

Variational Quantum Algorithms (VQAs) are widely used in the noisy intermediate-scale quantum (NISQ) era, but their trainability and performance depend critically on initialization parameters that shape the optimization landscape. Existing…

Emerging Technologies · Computer Science 2025-09-23 Chi Zhang , Mengxin Zheng , Qian Lou , Fan Chen

Surveillance facial images are often captured under unconstrained conditions, resulting in severe quality degradation due to factors such as low resolution, motion blur, occlusion, and poor lighting. Although recent face restoration…

Image and Video Processing · Electrical Eng. & Systems 2026-02-10 Yanwei Jiang , Wei Sun , Yingjie Zhou , Xiangyang Zhu , Yuqin Cao , Jun Jia , Yunhao Li , Sijing Wu , Dandan Zhu , Xingkuo Min , Guangtao Zhai

Face Image Quality Assessment (FIQA) aims to assess the recognition utility of face samples and is essential for reliable face recognition (FR) systems. Existing approaches require computationally expensive procedures such as multiple…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Guray Ozgur , Tahar Chettaoui , Eduarda Caldeira , Jan Niklas Kolf , Marco Huber , Andrea Atzori , Naser Damer , Fadi Boutros

Face recognition has made significant progress in recent years due to deep convolutional neural networks (CNN). In many face recognition (FR) scenarios, face images are acquired from a sequence with huge intra-variations. These…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Baoyun Peng , Min Liu , Zhaoning Zhang , Kai Xu , Dongsheng Li

Morphed face images have recently become a growing concern for existing face verification systems, as they are relatively easy to generate and can be used to impersonate someone's identity for various malicious purposes. Efficient Morphing…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Marija Ivanovska , Vitomir Štruc

Although many long-range imaging systems are designed to support extended vision applications, a natural obstacle to their operation is degradation due to atmospheric turbulence. Atmospheric turbulence causes significant degradation to…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Nithin Gopalakrishnan Nair , Kangfu Mei , Vishal M. Patel

Diffusion probabilistic models (DPMs) have exhibited exceptional proficiency in generating visual media of outstanding quality and realism. Nonetheless, their potential in non-generative domains, such as face recognition, has yet to be…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Bowen Sun , Shibao Zheng

Face video restoration (FVR) is a challenging but important problem where one seeks to recover a perceptually realistic face videos from a low-quality input. While diffusion probabilistic models (DPMs) have been shown to achieve remarkable…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Zihao Zou , Jiaming Liu , Shirin Shoushtari , Yubo Wang , Weijie Gan , Ulugbek S. Kamilov

Face morphing attacks seek to deceive a Face Recognition (FR) system by presenting a morphed image consisting of the biometric qualities from two different identities with the aim of triggering a false acceptance with one of the two…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Zander W. Blasingame , Chen Liu

Denoising diffusion probabilistic models have transformed image generation with their impressive fidelity and diversity. We show that they also excel in estimating optical flow and monocular depth, surprisingly, without task-specific…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Saurabh Saxena , Charles Herrmann , Junhwa Hur , Abhishek Kar , Mohammad Norouzi , Deqing Sun , David J. Fleet

Denoising Probabilistic Models (DPMs) represent an emerging domain of generative models that excel in generating diverse and high-quality images. However, most current training methods for DPMs often neglect the correlation between…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Viet Nguyen , Giang Vu , Tung Nguyen Thanh , Khoat Than , Toan Tran

The rapid advancement of deepfake technologies has sparked widespread public concern, particularly as face forgery poses a serious threat to public information security. However, the unknown and diverse forgery techniques, varied facial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Zhengchao Huang , Bin Xia , Zicheng Lin , Zhun Mou , Wenming Yang , Jiaya Jia