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Unpaired Medical Image Enhancement (UMIE) aims to transform a low-quality (LQ) medical image into a high-quality (HQ) one without relying on paired images for training. While most existing approaches are based on Pix2Pix/CycleGAN and are…

Image and Video Processing · Electrical Eng. & Systems 2023-07-18 Chunming He , Kai Li , Guoxia Xu , Jiangpeng Yan , Longxiang Tang , Yulun Zhang , Xiu Li , Yaowei Wang

Uncertainty quantification (UQ) remains a critical challenge in Large Vision Language Models (LVLMs) for reliable predictions and real-world deployment. However, most existing methods are adapted from the LLM literature and primarily focus…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Joseph Hoche , David Brellmann , Gianni Franchi

Accurate uncertainty quantification (UQ) in Large Language Models (LLMs) is critical for trustworthy deployment. While real-world language is inherently ambiguous, reflecting aleatoric uncertainty, existing UQ methods are typically…

Machine Learning · Computer Science 2026-01-30 Tim Tomov , Dominik Fuchsgruber , Tom Wollschläger , Stephan Günnemann

Existing medical image restoration (Med-IR) methods are typically modality-specific or degradation-specific, failing to generalize across the heterogeneous degradations encountered in clinical practice. We argue this limitation stems from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Jiyao Liu , Junzhi Ning , Wanying Qu , Lihao Liu , Chenglong Ma , Junjun He , Ningsheng Xu

Free-energy-guided self-repair mechanisms have shown promising results in image quality assessment (IQA), but remain under-explored in video quality assessment (VQA), where temporal dynamics and model constraints pose unique challenges.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Zhaoyang Wang , Wen Lu , Jie Li , Lihuo He , Maoguo Gong , Xinbo Gao

Low-light image enhancement (LLIE) aims to improve illumination while preserving high-quality color and texture. However, existing methods often fail to extract reliable feature representations due to severely degraded pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2025-10-17 Xu Wu , Zhihui Lai , Xianxu Hou , Jie Zhou , Ya-nan Zhang , Linlin Shen

Understanding semantic information is an essential step in knowing what is being learned in both full-reference (FR) and no-reference (NR) image quality assessment (IQA) methods. However, especially for many severely distorted images, even…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Pengxiang Xiao , Shuai He , Limin Liu , Anlong Ming

Retinal image quality assessment (RIQA) supports computer-aided diagnosis of eye diseases. However, most tools classify only overall image quality, without indicating acquisition defects to guide recapture. This gap is mainly due to the…

Full-reference (FR) image quality assessment (IQA) models assume a high quality "pristine" image as a reference against which to measure perceptual image quality. In many applications, however, the assumption that the reference image is of…

Image and Video Processing · Electrical Eng. & Systems 2018-02-12 Xiangxu Yu , Christos G. Bampis , Praful Gupta , Alan C. Bovik

Most modern No-Reference Image-Quality Assessment (NR-IQA) metrics are based on neural networks vulnerable to adversarial attacks. Attacks on such metrics lead to incorrect image/video quality predictions, which poses significant risks,…

Image and Video Processing · Electrical Eng. & Systems 2024-11-20 Ekaterina Shumitskaya , Mikhail Pautov , Dmitriy Vatolin , Anastasia Antsiferova

In recent years, image generation technology has rapidly advanced, resulting in the creation of a vast array of AI-generated images (AIGIs). However, the quality of these AIGIs is highly inconsistent, with low-quality AIGIs severely…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Jiquan Yuan , Fanyi Yang , Jihe Li , Xinyan Cao , Jinming Che , Jinlong Lin , Xixin Cao

The visual quality of an image is confounded by a number of intertwined factors including its semantic content, distortion characteristics and appearance properties such as brightness, contrast, sharpness, and colourfulness. Distilling high…

Computer Vision and Pattern Recognition · Computer Science 2024-12-11 Fei Zhou , Tianhao Gu , Zhicong Huang , Guoping Qiu

Synthetic data has become essential for training code generation models, yet it introduces significant noise and hallucinations that are difficult to detect with current metrics. Existing data selection methods like Instruction-Following…

Computation and Language · Computer Science 2026-03-17 Jiayin Lei , Ming Ma , Yunxi Duan , Chenxi Li , Tianming Yang

Retinal image quality assessment (RIQA) is essential for controlling the quality of retinal imaging and guaranteeing the reliability of diagnoses by ophthalmologists or automated analysis systems. Existing RIQA methods focus on the RGB…

Computer Vision and Pattern Recognition · Computer Science 2020-01-10 Huazhu Fu , Boyang Wang , Jianbing Shen , Shanshan Cui , Yanwu Xu , Jiang Liu , Ling Shao

Large Multimodal Models (LMMs) have recently shown remarkable promise in low-level visual perception tasks, particularly in Image Quality Assessment (IQA), demonstrating strong zero-shot capability. However, achieving state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Kang Fu , Huiyu Duan , Zicheng Zhang , Yucheng Zhu , Jun Zhao , Xiongkuo Min , Jia Wang , Guangtao Zhai

Effective Uncertainty Quantification (UQ) represents a key aspect for reliable deployment of Large Language Models (LLMs) in automated decision-making and beyond. Yet, for LLM generation with multiple choice structure, the state-of-the-art…

Machine Learning · Computer Science 2025-11-18 Ramzi Dakhmouche , Adrien Letellier , Hossein Gorji

Progress in lighting estimation is tracked by computing existing image quality assessment (IQA) metrics on images from standard datasets. While this may appear to be a reasonable approach, we demonstrate that doing so does not correlate to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Justine Giroux , Mohammad Reza Karimi Dastjerdi , Yannick Hold-Geoffroy , Javier Vazquez-Corral , Jean-François Lalonde

Recent text-to-image models have improved global realism, but text rendering remains a persistent failure mode: images may look convincing overall, yet local typography often contains malformed glyphs, broken strokes, irregular spacing, and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Kirill Koltsov , Aleksandr Gushchin , Anastasia Antsiferova , Dmitriy Vatolin

Image Quality Assessment (IQA) aims to evaluate the perceptual quality of images based on human subjective perception. Existing methods generally combine multiscale features to achieve high performance, but most rely on straightforward…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Chenyue Song , Chen Hui , Wei Zhang , Haiqi Zhu , Shaohui Liu , Hong Huang , Feng Jiang

In this paper, we introduce an image quality assessment (IQA) method for pediatric T1- and T2-weighted MR images. IQA is first performed slice-wise using a nonlocal residual neural network (NR-Net) and then volume-wise by agglomerating the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Siyuan Liu , Kim-Han Thung , Weili Lin , Pew-Thian Yap , Dinggang Shen