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In clinical examinations and diagnoses, low-dose computed tomography (LDCT) is crucial for minimizing health risks compared with normal-dose computed tomography (NDCT). However, reducing the radiation dose compromises the signal-to-noise…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 Haoyu Zhao , Yuliang Gu , Zhou Zhao , Bo Du , Yongchao Xu , Rui Yu

Reliable image quality assessment is essential in applications where large volumes of images are acquired automatically and must be filtered before further analysis. In many practical scenarios, a pristine reference image is unavailable,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Koffi Titus Sergio Aglin , Anthony K. Muchiri , Celestin Nkundineza

With the dramatic upsurge in the volume of ultrasound examinations, low-quality ultrasound imaging has gradually increased due to variations in operator proficiency and imaging circumstances, imposing a severe burden on diagnosis accuracy…

Image and Video Processing · Electrical Eng. & Systems 2025-01-07 Hongyi Miao , Jun Jia , Yankun Cao , Yingjie Zhou , Yanwei Jiang , Zhi Liu , Guangtao Zhai

Low-dose X-ray CT technology is one of important directions of current research and development of medical imaging equipment. A fast algorithm of blockwise sinogram filtering is presented for realtime low-dose CT imaging. A nonstationary…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Fengling Wang , Bowen Lin , Shujun Fu , Shiling Xie , Zhigang Zhao , Yuliang Li

No-reference image quality assessment (NR-IQA) aims to measure the image quality without reference image. However, contrast distortion has been overlooked in the current research of NR-IQA. In this paper, we propose a very simple but…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Jia Yan , Jie Li , Xin Fu

Despite the impressive performance of large multimodal models (LMMs) in high-level visual tasks, their capacity for image quality assessment (IQA) remains limited. One main reason is that LMMs are primarily trained for high-level tasks…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Baoliang Chen , Siyi Pan , Dongxu Wu , Liang Xie , Xiangjie Sui , Lingyu Zhu , Hanwei Zhu

No-Reference Image Quality Assessment (NR-IQA) aims at estimating image quality in accordance with subjective human perception. However, most methods focus on exploring increasingly complex networks to improve the final…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Ronghua Liao , Chen Hui , Lang Yuan , Haiqi Zhu , Feng Jiang

Recent advances in Multimodal Large Language Models (MLLMs) have introduced a paradigm shift for Image Quality Assessment (IQA) from unexplainable image quality scoring to explainable IQA, demonstrating practical applications like quality…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Wenjie Liao , Jieyu Yuan , Yifang Xu , Chunle Guo , Zilong Zhang , Jihong Li , Jiachen Fu , Haotian Fan , Tao Li , Junhui Cui , Chongyi Li

Lowering radiation dose per view and utilizing sparse views per scan are two common CT scan modes, albeit often leading to distorted images characterized by noise and streak artifacts. Blind image quality assessment (BIQA) strives to…

Image and Video Processing · Electrical Eng. & Systems 2023-10-06 Yongyi Shi , Wenjun Xia , Ge Wang , Xuanqin Mou

With the development of deep learning, medical image processing has been widely used to assist clinical research. This paper focuses on the denoising problem of low-dose computed tomography using deep learning. Although low-dose computed…

Image and Video Processing · Electrical Eng. & Systems 2026-05-19 Zhilin Guan , Wei Zhang

Positron Emission Tomography / Computed Tomography (PET/CT) plays a critical role in medical imaging, combining functional and anatomical information to aid in accurate diagnosis. However, image quality degradation due to noise, compression…

Image and Video Processing · Electrical Eng. & Systems 2025-06-26 Siqiao Li , Chen Hui , Wei Zhang , Rui Liang , Chenyue Song , Feng Jiang , Haiqi Zhu , Zhixuan Li , Hong Huang , Xiang Li

In the intention of minimizing excessive X-ray radiation administration to patients, low-dose computed tomography (LDCT) has become a distinct trend in radiology. However, while lowering the radiation dose reduces the risk to the patient,…

Medical Physics · Physics 2022-04-12 Long Zhou , Xiaozhuang Wang , Min Hou , Ping Li , Chunlong Fu , Yanjun Ren , Tingting Shao , Xi Hu , Jihong Sun , Hongwei Ye

Medical Image Quality Assessment (IQA) serves as the first-mile safety gate for clinical AI, yet existing approaches remain constrained by scalar, score-based metrics and fail to reflect the descriptive, human-like reasoning process central…

Since 2016, deep learning (DL) has advanced tomographic imaging with remarkable successes, especially in low-dose computed tomography (LDCT) imaging. Despite being driven by big data, the LDCT denoising and pure end-to-end reconstruction…

Image and Video Processing · Electrical Eng. & Systems 2023-03-28 Wenjun Xia , Hongming Shan , Ge Wang , Yi Zhang

The quality of visual input is very important for both human and machine perception. Consequently many processing techniques exist that deal with different distortions. Usually image processing is applied freely and lacks redundancy…

Image and Video Processing · Electrical Eng. & Systems 2021-02-10 Sascha Xu , Jan Bauer , Benjamin Axmann

With the rapid advancement of Multi-modal Large Language Models (MLLMs), MLLM-based Image Quality Assessment (IQA) methods have shown promising performance in linguistic quality description. However, current methods still fall short in…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Zhiyuan You , Xin Cai , Jinjin Gu , Tianfan Xue , Chao Dong

Low-field (LF) MRI scanners (<1T) are still prevalent in settings with limited resources or unreliable power supply. However, they often yield images with lower spatial resolution and contrast than high-field (HF) scanners. This quality…

Image and Video Processing · Electrical Eng. & Systems 2023-11-14 Seunghoi Kim , Henry F. J. Tregidgo , Ahmed K. Eldaly , Matteo Figini , Daniel C. Alexander

Document quality assessment is critical for a wide range of applications including document digitization, OCR, and archival. However, existing approaches often struggle to provide accurate and robust quality scores, limiting their…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Junjie Gao , Runze Liu , Yingzhe Peng , Shujian Yang , Jin Zhang , Kai Yang , Zhiyuan You

The application of iodinated contrast media (ICM) improves the sensitivity and specificity of computed tomography (CT) for a wide range of clinical indications. However, overdose of ICM can cause problems such as kidney damage and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Genyuan Zhang , Zihao Wang , Zhifan Gao , Lei Xu , Zhen Zhou , Haijun Yu , Jianjia Zhang , Xiujian Liu , Weiwei Zhang , Shaoyu Wang , Huazhu Fu , Fenglin Liu , Weiwen Wu

Four-dimensional (4D) wide coverage computed tomography (CT) is an effective imaging modality for measuring the mechanical function of the myocardium. However, repeated CT measurement across several heartbeats is still a concern. A…

Medical Physics · Physics 2024-03-14 Zhye Yin , Pengwei Wu , Ashish Manohar , Elliot R. McVeigh , Jed D. Pack