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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

Vision Transformers (ViTs) are built on the assumption of treating image patches as ``visual tokens" and learn patch-to-patch attention. The patch embedding based tokenizer has a semantic gap with respect to its counterpart, the textual…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Ryan Grainger , Thomas Paniagua , Xi Song , Naresh Cuntoor , Mun Wai Lee , Tianfu Wu

In recent years, the scientific community has focused on the development of CAD tools that could improve bone fractures' classification, mostly based on Convolutional Neural Network (CNN). However, the discerning accuracy of fractures'…

Artificial Intelligence · Computer Science 2021-10-27 Leonardo Tanzi , Andrea Audisio , Giansalvo Cirrincione , Alessandro Aprato , Enrico Vezzetti

Vision-transformers (ViTs) and large-scale convolution-neural-networks (CNNs) have reshaped computer vision through pretrained feature representations that enable strong transfer learning for diverse tasks. However, their efficiency as…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Alon Kaya , Igal Bilik , Inna Stainvas

Vision transformers (ViTs) are emerging with significantly improved accuracy in computer vision tasks. However, their complex architecture and enormous computation/storage demand impose urgent needs for new hardware accelerator design…

Computer Vision and Pattern Recognition · Computer Science 2022-08-11 Zhengang Li , Mengshu Sun , Alec Lu , Haoyu Ma , Geng Yuan , Yanyue Xie , Hao Tang , Yanyu Li , Miriam Leeser , Zhangyang Wang , Xue Lin , Zhenman Fang

Age estimation from facial images is a complex and multifaceted challenge in computer vision. In this study, we present a novel hybrid architecture that combines ConvNeXt, a state-of-the-art advancement of convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Gaby Maroun , Salah Eddine Bekhouche , Fadi Dornaika

The goal of No-Reference Image Quality Assessment (NR-IQA) is to estimate the perceptual image quality in accordance with subjective evaluations, it is a complex and unsolved problem due to the absence of the pristine reference image. In…

Image and Video Processing · Electrical Eng. & Systems 2022-01-06 S. Alireza Golestaneh , Saba Dadsetan , Kris M. Kitani

Image Quality Assessment (IQA) has long been a research hotspot in the field of image processing, especially No-Reference Image Quality Assessment (NR-IQA). Due to the powerful feature extraction ability, existing Convolution Neural Network…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 Jinsong Shi , Pan Gao , Jie Qin

The rapid advancement of generative models has led to a growing prevalence of highly realistic AI-generated images, posing significant challenges for digital forensics and content authentication. Conventional detection methods mainly rely…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Dabbrata Das , Mahshar Yahan , Md Tareq Zaman , Md Rishadul Bayesh

Vision Transformer (ViT) self-attention mechanism is characterized by feature collapse in deeper layers, resulting in the vanishing of low-level visual features. However, such features can be helpful to accurately represent and identify…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Anxhelo Diko , Danilo Avola , Marco Cascio , Luigi Cinque

Blind image quality assessment (BIQA) plays a crucial role in evaluating and optimizing visual experience. Most existing BIQA approaches fuse shallow and deep features extracted from backbone networks, while overlooking the unequal…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Long Tang , Guoquan Zhen , Jie Hao , Jianbo Zhang , Huiyu Duan , Liang Yuan , Guangtao Zhai

We present a deep neural network-based approach to image quality assessment (IQA). The network is trained end-to-end and comprises ten convolutional layers and five pooling layers for feature extraction, and two fully connected layers for…

Computer Vision and Pattern Recognition · Computer Science 2017-12-11 Sebastian Bosse , Dominique Maniry , Klaus-Robert Müller , Thomas Wiegand , Wojciech Samek

Portrait images typically consist of a salient person against diverse backgrounds. With the development of mobile devices and image processing techniques, users can conveniently capture portrait images anytime and anywhere. However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Wei Sun , Weixia Zhang , Yanwei Jiang , Haoning Wu , Zicheng Zhang , Jun Jia , Yingjie Zhou , Zhongpeng Ji , Xiongkuo Min , Weisi Lin , Guangtao Zhai

Self-attention-based vision transformers (ViTs) have emerged as a highly competitive architecture in computer vision. Unlike convolutional neural networks (CNNs), ViTs are capable of global information sharing. With the development of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-25 Zhenzhen Chu , Jiayu Chen , Cen Chen , Chengyu Wang , Ziheng Wu , Jun Huang , Weining Qian

Vision Transformer (ViT) is emerging as the state-of-the-art architecture for image recognition. While recent studies suggest that ViTs are more robust than their convolutional counterparts, our experiments find that ViTs trained on…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Chengzhi Mao , Lu Jiang , Mostafa Dehghani , Carl Vondrick , Rahul Sukthankar , Irfan Essa

The Vision Transformer (ViT) excels in accuracy when handling high-resolution images, yet it confronts the challenge of significant spatial redundancy, leading to increased computational and memory requirements. To address this, we present…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Youbing Hu , Yun Cheng , Anqi Lu , Zhiqiang Cao , Dawei Wei , Jie Liu , Zhijun Li

This paper introduces FaceLiVT, a lightweight yet powerful face recognition model that integrates a hybrid Convolution Neural Network (CNN)-Transformer architecture with an innovative and lightweight Multi-Head Linear Attention (MHLA)…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Novendra Setyawan , Chi-Chia Sun , Mao-Hsiu Hsu , Wen-Kai Kuo , Jun-Wei Hsieh

We present in this paper a new architecture, named Convolutional vision Transformer (CvT), that improves Vision Transformer (ViT) in performance and efficiency by introducing convolutions into ViT to yield the best of both designs. This is…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Haiping Wu , Bin Xiao , Noel Codella , Mengchen Liu , Xiyang Dai , Lu Yuan , Lei Zhang

In recent years, the rapid advancement of deepfake technology has revolutionized content creation, lowering forgery costs while elevating quality. However, this progress brings forth pressing concerns such as infringements on individual…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Zhikan Wang , Zhongyao Cheng , Jiajie Xiong , Xun Xu , Tianrui Li , Bharadwaj Veeravalli , Xulei Yang

A long-held challenge in no-reference image quality assessment (NR-IQA) learning from human subjective perception is the lack of objective generalization to unseen natural distortions. To address this, we integrate a novel Depth-Guided…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Vaishnav Ramesh , Junliang Liu , Haining Wang , Md Jahidul Islam