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Optical coherence tomography (OCT) is a commonly-used method of extracting high resolution retinal information. Moreover there is an increasing demand for the automated retinal layer segmentation which facilitates the retinal disease…

Image and Video Processing · Electrical Eng. & Systems 2020-09-30 Zeyu Fu , Yang Sun , Xiangyu Zhang , Scott Stainton , Shaun Barney , Jeffry Hogg , William Innes , Satnam Dlay

Face super-resolution (FSR) under limited computational budgets remains challenging. Existing methods often treat all facial pixels equally, leading to suboptimal resource allocation and degraded performance. CNNs are sensitive to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Siyu Xu , Wenjie Li , Guangwei Gao , Jian Yang , Guo-Jun Qi , Chia-Wen Lin

Over the last several years, research on facial recognition based on Deep Neural Network has evolved with approaches like task-specific loss functions, image normalization and augmentation, network architectures, etc. However, there have…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Kyo Takano

Face recognition under ideal conditions is now considered a well-solved problem with advances in deep learning. Recognizing faces under occlusion, however, still remains a challenge. Existing techniques often fail to recognize faces with…

Computer Vision and Pattern Recognition · Computer Science 2022-02-16 Shaozhe Hao , Chaofeng Chen , Zhenfang Chen , Kwan-Yee K. Wong

The human face conveys a significant amount of information. Through facial expressions, the face is able to communicate numerous sentiments without the need for verbalisation. Visual emotion recognition has been extensively studied.…

Computer Vision and Pattern Recognition · Computer Science 2022-01-20 Liam Schoneveld , Alice Othmani

Although face recognition has made impressive progress in recent years, we ignore the racial bias of the recognition system when we pursue a high level of accuracy. Previous work found that for different races, face recognition networks…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Linzhi Huang , Mei Wang , Jiahao Liang , Weihong Deng , Hongzhi Shi , Dongchao Wen , Yingjie Zhang , Jian Zhao

Real-world video restoration is plagued by complex degradations from motion coupled with dynamically varying exposure - a key challenge largely overlooked by prior works and a common artifact of auto-exposure or low-light capture. We…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Geunhyuk Youk , Jihyong Oh , Munchurl Kim

Image classification remains a fundamental yet challenging task in computer vision, particularly when fine-grained feature extraction and background noise suppression are required simultaneously. Conventional convolutional neural networks,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Wentao Jiang , Yuanchan Xu , Heng Yuan

We present an effective and efficient approach for low-light image enhancement, named Lookup Table Global Curve Estimation (LUT-GCE). In contrast to existing curve-based methods with pixel-wise adjustment, we propose to estimate a global…

Computer Vision and Pattern Recognition · Computer Science 2023-07-03 Changguang Wu , Jiangxin Dong , Jinhui Tang

In recent years, monocular depth estimation is applied to understand the surrounding 3D environment and has made great progress. However, there is an ill-posed problem on how to gain depth information directly from a single image. With the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-15 Meiqi Pei

A high-resolution network exhibits remarkable capability in extracting multi-scale features for human pose estimation, but fails to capture long-range interactions between joints and has high computational complexity. To address these…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Qun Li , Ziyi Zhang , Fu Xiao , Feng Zhang , Bir Bhanu

Facial expression classification remains a challenging task due to the high dimensionality and inherent complexity of facial image data. This paper presents Hy-Facial, a hybrid feature extraction framework that integrates both deep learning…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Xinjin Li , Yu Ma , Kaisen Ye , Jinghan Cao , Minghao Zhou , Yeyang Zhou

The Facial Action Coding System (FACS) encodes the action units (AUs) in facial images, which has attracted extensive research attention due to its wide use in facial expression analysis. Many methods that perform well on automatic facial…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Xuri Ge , Joemon M. Jose , Songpei Xu , Xiao Liu , Hu Han

Facial expressions play a crucial role in human communication serving as a powerful and impactful means to express a wide range of emotions. With advancements in artificial intelligence and computer vision, deep neural networks have emerged…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Yassine El Boudouri , Amine Bohi

This paper proposes a deep feature extractor for iris recognition at arbitrary resolutions. Resolution degradation reduces the recognition performance of deep learning models trained by high-resolution images. Using various-resolution…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Yuho Shoji , Yuka Ogino , Takahiro Toizumi , Atsushi Ito

Facial expression recognition (FER) is vital for human-computer interaction and emotion analysis, yet recognizing expressions in low-resolution images remains challenging. This paper introduces a practical method called Dynamic Resolution…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Songpan Wang , Xu Li , Tianxiang Jiang , Yuanlun Xie

Facial expression recognition has been an active area in computer vision with application areas including animation, social robots, personalized banking, etc. In this study, we explore the problem of image classification for detecting…

Computer Vision and Pattern Recognition · Computer Science 2018-12-18 Aravind Ravi

Person re-identification aims at establishing the identity of a pedestrian from a gallery that contains images of multiple people obtained from a multi-camera system. Many challenges such as occlusions, drastic lighting and pose variations…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Guodong Ding , Salman Khan , Zhenmin Tang , Fatih Porikli

Facial expressions are one of the most powerful, natural and immediate means for human being to communicate their emotions and intensions. Recognition of facial expression has many applications including human-computer interaction,…

Computer Vision and Pattern Recognition · Computer Science 2016-04-18 Deepak Ghimire , Sunghwan Jeong , Joonwhoan Lee , Sang Hyun Park

Surveillance scenarios are prone to several problems since they usually involve low-resolution footage, and there is no control of how far the subjects may be from the camera in the first place. This situation is suitable for the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-27 Angelo G. Menezes
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