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Directly employing 3D Gaussian Splatting (3DGS) on images with adverse illumination conditions exhibits considerable difficulty in achieving high-quality, normally-exposed representations due to: (1) The limited Structure from Motion (SfM)…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Han Zhou , Wei Dong , Jun Chen

Computer graphics images (CGIs) are artificially generated by means of computer programs and are widely perceived under various scenarios, such as games, streaming media, etc. In practice, the quality of CGIs consistently suffers from poor…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Zicheng Zhang , Wei Sun , Yingjie Zhou , Jun Jia , Zhichao Zhang , Jing Liu , Xiongkuo Min , Guangtao Zhai

Existing debiasing approaches in Visual Question Answering (VQA) primarily focus on enhancing visual learning, integrating auxiliary models, or employing data augmentation strategies. However, these methods exhibit two major drawbacks.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-07 Quanxing Xu , Ling Zhou , Xian Zhong , Feifei Zhang , Rubing Huang , Chia-Wen Lin

Synthesizing a novel view from a single input image is a challenging task. Traditionally, this task was approached by estimating scene depth, warping, and inpainting, with machine learning models enabling parts of the pipeline. More…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Noam Elata , Bahjat Kawar , Yaron Ostrovsky-Berman , Miriam Farber , Ron Sokolovsky

A successful approach to image quality assessment involves comparing the structural information between a distorted and its reference image. However, extracting structural information that is perceptually important to our visual system is a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-17 Tanaya Guha , Ehsan Nezhadarya , Rabab K Ward

Full-reference image quality metrics (FR-IQMs) aim to measure the visual differences between a pair of reference and distorted images, with the goal of accurately predicting human judgments. However, existing FR-IQMs, including traditional…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Uğur Çoğalan , Mojtaba Bemana , Hans-Peter Seidel , Karol Myszkowski

Image Quality Assessment (IQA) constitutes a fundamental task within the field of computer vision, yet it remains an unresolved challenge, owing to the intricate distortion conditions, diverse image contents, and limited availability of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Kangmin Xu , Liang Liao , Jing Xiao , Chaofeng Chen , Haoning Wu , Qiong Yan , Weisi Lin

Objective image quality evaluation is a challenging task, which aims to measure the quality of a given image automatically. According to the availability of the reference images, there are Full-Reference and No-Reference IQA tasks,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-24 Chao Zeng , Sam Kwong

We consider the problem of obtaining image quality representations in a self-supervised manner. We use prediction of distortion type and degree as an auxiliary task to learn features from an unlabeled image dataset containing a mixture of…

Computer Vision and Pattern Recognition · Computer Science 2022-06-30 Pavan C. Madhusudana , Neil Birkbeck , Yilin Wang , Balu Adsumilli , Alan C. Bovik

The goal in a blind image quality assessment (BIQA) model is to simulate the process of evaluating images by human eyes and accurately assess the quality of the image. Although many approaches effectively identify degradation, they do not…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Guangyi Yang , Yang Zhan. , Yuxuan Wang

Image Quality Assessment (IQA) is a long-standing problem in computer vision. Previous methods typically focus on predicting numerical scores without explanation or providing low-level descriptions lacking precise scores. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Guoqiang Liang , Jianyi Wang , Zhonghua Wu , Shangchen Zhou

While recent advancements in large multimodal models (LMMs) have significantly improved their abilities in image quality assessment (IQA) relying on absolute quality rating, how to transfer reliable relative quality comparison outputs to…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Hanwei Zhu , Haoning Wu , Yixuan Li , Zicheng Zhang , Baoliang Chen , Lingyu Zhu , Yuming Fang , Guangtao Zhai , Weisi Lin , Shiqi Wang

No-Reference Image Quality Assessment (NR-IQA), responsible for assessing the quality of a single input image without using any reference, plays a critical role in evaluating and optimizing computer vision systems, e.g., low-light…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Yi Yu , Song Xia , Xun Lin , Wenhan Yang , Shijian Lu , Yap-peng Tan , Alex Kot

Novel View Synthesis (NVS) is the task of generating new images of a scene from viewpoints that were not part of the original input. Diffusion-based NVS can generate high-quality, temporally consistent images, however, remains…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Yuchen Xia , Souvik Kundu , Mosharaf Chowdhury , Nishil Talati

Recent advances in Image Quality Assessment (IQA) have leveraged Multi-modal Large Language Models (MLLMs) to generate descriptive explanations. However, despite their strong visual perception modules, these models often fail to reliably…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Yuan Li , Zitang Sun , Yen-Ju Chen , Shin'ya Nishida

Neural View Synthesis (NVS) techniques such as NeRF and 3D Gaussian Splatting (3DGS) have enabled photorealistic rendering from novel viewpoints and are increasingly used to augment training data for visual localization. However, these…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Feifei Li , Qi Song , Chi Zhang , Hui Shuai , Rui Huang

Image Quality Assessment (IQA) is essential in various Computer Vision tasks such as image deblurring and super-resolution. However, most IQA methods require reference images, which are not always available. While there are some…

Image and Video Processing · Electrical Eng. & Systems 2024-05-06 Han Cui , Alfredo De Goyeneche , Efrat Shimron , Boyuan Ma , Michael Lustig

For full-reference image quality assessment (FR-IQA) using deep-learning approaches, the perceptual similarity score between a distorted image and a reference image is typically computed as a distance measure between features extracted from…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Abhijay Ghildyal , Nabajeet Barman , Saman Zadtootaghaj

Omnidirectional image quality assessment (OIQA) has been one of the hot topics in IQA with the continuous development of VR techniques, and achieved much success in the past few years. However, most studies devote themselves to the uniform…

Image and Video Processing · Electrical Eng. & Systems 2025-01-22 Jiebin Yan , Jiale Rao , Xuelin Liu , Yuming Fang , Yifan Zuo , Weide Liu

Scale-invariance is an open problem in many computer vision subfields. For example, object labels should remain constant across scales, yet model predictions diverge in many cases. This problem gets harder for tasks where the ground-truth…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Oliver Wiedemann , Vlad Hosu , Shaolin Su , Dietmar Saupe