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Human visual perception naturally evaluates image quality across multiple scales, a hierarchical process that existing blind image quality assessment (BIQA) algorithms struggle to replicate effectively. This limitation stems from a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Runze Hu , Zihao Huang , Xudong Li , Bohan Fu , Yan Zhang , Sicheng Zhao

Face recognition systems (FRS) exhibit significant accuracy differences based on the user's gender. Since such a gender gap reduces the trustworthiness of FRS, more recent efforts have tried to find the causes. However, these studies make…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Paul Jonas Kurz , Haiyu Wu , Kevin W. Bowyer , Philipp Terhörst

Face image quality assessment (FIQA) plays a critical role in face recognition and verification systems, especially in uncontrolled, real-world environments. Although several methods have been proposed, general-purpose no-reference image…

Computer Vision and Pattern Recognition · Computer Science 2025-09-15 MohammadAli Hamidi , Hadi Amirpour , Luigi Atzori , Christian Timmerer

Existing face restoration models have relied on general assessment metrics that do not consider the characteristics of facial regions. Recent works have therefore assessed their methods using human studies, which is not scalable and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Byungho Jo , Donghyeon Cho , In Kyu Park , Sungeun Hong

Face image quality assessment (FIQA) is essential for various face-related applications. Although FIQA has been extensively studied and achieved significant progress, the computational complexity of FIQA algorithms remains a key concern for…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Wei Sun , Weixia Zhang , Linhan Cao , Jun Jia , Xiangyang Zhu , Dandan Zhu , Xiongkuo Min , Guangtao Zhai

Face Image Quality Assessment (FIQA) is a crucial control step in biometric pipelines. It ensures only reliable samples are processed to maintain system accuracy. State-of-the-art FIQA methods achieve high utility but typically operate as…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Erdi Sarıtaş , Eren Onaran , Vitomir Štruc , Hazım Kemal Ekenel

An accurate computational model for image quality assessment (IQA) benefits many vision applications, such as image filtering, image processing, and image generation. Although the study of face images is an important subfield in computer…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Shaolin Su , Hanhe Lin , Vlad Hosu , Oliver Wiedemann , Jinqiu Sun , Yu Zhu , Hantao Liu , Yanning Zhang , Dietmar Saupe

Skin detection is the process of discriminating skin and non-skin regions in a digital image and it is widely used in several applications ranging from hand gesture analysis to track body parts and face detection. Skin detection is a…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Alessandra Lumini , Loris Nanni

Human face features can be used to determine individual identity as well as demographic information like gender and race. However, the extent to which black-box commercial face recognition algorithms (CFRAs) use gender and race features to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 John J. Howard , Yevgeniy B. Sirotin , Jerry L. Tipton , Arun R. Vemury

Generic Face Image Quality Assessment (GFIQA) evaluates the perceptual quality of facial images, which is crucial in improving image restoration algorithms and selecting high-quality face images for downstream tasks. We present a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Wei-Ting Chen , Gurunandan Krishnan , Qiang Gao , Sy-Yen Kuo , Sizhuo Ma , Jian Wang

Face recognition (FR) systems have become widely used and readily available in recent history. However, differential performance between certain demographics has been identified within popular FR models. Skin tone differences between…

Image and Video Processing · Electrical Eng. & Systems 2023-09-06 Joseph Drahos , Richard Plesh , Keivan Bahmani , Mahesh Banavar , Stephanie Schuckers

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

Image quality assessment (IQA) is an active research area in the field of image processing. Most prior works focus on visual quality of natural images captured by cameras. In this paper, we explore visual quality of scanned documents,…

Image and Video Processing · Electrical Eng. & Systems 2023-07-26 Justin Yang , Peter Bauer , Todd Harris , Changhyung Lee , Hyeon Seok Seo , Jan P Allebach , Fengqing Zhu

Quality scores provide a measure to evaluate the utility of biometric samples for biometric recognition. Biometric recognition systems require high-quality samples to achieve optimal performance. This paper focuses on face images and the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Biying Fu , Cong Chen , Olaf Henniger , Naser Damer

No-reference image quality assessment (NR-IQA) aims to simulate the process of perceiving image quality aligned with subjective human perception. However, existing NR-IQA methods either focus on global representations that leads to limited…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Chenyue Song , Chen Hui , Haiqi Zhu , Feng Jiang , Yachun Mi , Wei Zhang , Shaohui Liu

Skin detection is one of the most important and primary stages in some of image processing applications such as face detection and human tracking. So far, many approaches are proposed to done this case. Near all of these methods have tried…

Computer Vision and Pattern Recognition · Computer Science 2014-07-25 Reza Azad , Hamid Reza Shayegh

Face detection is one of the challenging tasks in computer vision. Human face detection plays an essential role in the first stage of face processing applications such as face recognition, face tracking, image database management, etc. In…

Computer Vision and Pattern Recognition · Computer Science 2017-02-16 Ali Sharifara , Mohd Shafry Mohd Rahim , Farhad Navabifar , Dylan Ebert , Amir Ghaderi , Michalis Papakostas

Facial analysis systems have been deployed by large companies and critiqued by scholars and activists for the past decade. Many existing algorithmic audits examine the performance of these systems on later stage elements of facial analysis…

Computers and Society · Computer Science 2022-11-30 Samuel Dooley , George Z. Wei , Tom Goldstein , John P. Dickerson

Among the various image quality assessment (IQA) tasks, blind IQA (BIQA) is particularly challenging due to the absence of knowledge about the reference image and distortion type. Features based on natural scene statistics (NSS) have been…

Computer Vision and Pattern Recognition · Computer Science 2015-10-13 Wufeng Xue , Xuanqin Mou , Lei Zhang

With increasing adoption of face recognition systems, it is important to ensure adequate performance of these technologies across demographic groups. Recently, phenotypes such as skin-tone, have been proposed as superior alternatives to…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 John J. Howard , Yevgeniy B. Sirotin , Jerry L. Tipton , Arun R. Vemury