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Blind image quality assessment (BIQA) for ultrahighdefinition (UHD) images remains challenging because native-resolution inference is computationally expensive, whereas aggressive resizing or isolated cropping may suppress scale-sensitive…

计算机视觉与模式识别 · 计算机科学 2026-05-22 Shaode Yu , Enqi Chen , Ming Huang , Xuemin Ren , Songnan Zhao , Zhicheng Zhang , Qiurui Sun

Image quality assessment (IQA) aims to estimate human perception based image visual quality. Although existing deep neural networks (DNNs) have shown significant effectiveness for tackling the IQA problem, it still needs to improve the…

图像与视频处理 · 电气工程与系统科学 2020-12-04 Wei Zhou , Zhibo Chen

Supervised manifold learning methods learn data representations by preserving the geometric structure of data while enhancing the separation between data samples from different classes. In this work, we propose a theoretical study of…

机器学习 · 计算机科学 2018-01-08 Elif Vural , Christine Guillemot

One major problem of objective Image Quality Assessment (IQA) methods is the lack of linearity of their quality estimates with respect to scores expressed by human subjects. For this reason, usually IQA metrics undergo a calibration process…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Elio D. Di Claudio , Paolo Giannitrapani , Giovanni Jacovitti

Perceptual image quality assessment (IQA) is the task of predicting the visual quality of an image as perceived by a human observer. Current state-of-the-art techniques are based on deep representations trained in discriminative manner.…

图像与视频处理 · 电气工程与系统科学 2024-04-30 Simon Raviv , Gal Chechik

Machine learning (ML) models are only as good as the data they are trained on. But recent studies have found datasets widely used to train and evaluate ML models, e.g. ImageNet, to have pervasive labeling errors. Erroneous labels on the…

Deep neural networks (DNNs) achieve great success in blind image quality assessment (BIQA) with large pre-trained models in recent years. Their solutions cannot be easily deployed at mobile or edge devices, and a lightweight solution is…

图像与视频处理 · 电气工程与系统科学 2022-07-12 Zhanxuan Mei , Yun-Cheng Wang , Xingze He , C. -C. Jay Kuo

Blind image quality assessment (BIQA) remains challenging due to the diversity of distortion and image content variation, which complicate the distortion patterns crossing different scales and aggravate the difficulty of the regression…

图像与视频处理 · 电气工程与系统科学 2023-11-06 Qingyi Pan , Ning Guo , Letu Qingge , Jingyi Zhang , Pei Yang

Despite significant progress in no-reference image quality assessment (NR-IQA), dataset biases and reliance on subjective labels continue to hinder their generalization performance. We propose HiRQA (Hierarchical Ranking and Quality…

计算机视觉与模式识别 · 计算机科学 2026-05-28 Vaishnav Ramesh , Haining Wang , Md Jahidul Islam

This article introduces a new data-driven approach that leverages a manifold embedding generated by the invertible neural network to improve the robustness, efficiency, and accuracy of the constitutive-law-free simulations with limited…

机器学习 · 计算机科学 2022-05-19 Bahador Bahmani , WaiChing Sun

Most existing manifold dimension estimators rely on the assumption that the underlying manifold is locally flat within the neighborhoods under consideration. More recently, curvature-adjusted principal component analysis (CA-PCA) has…

机器学习 · 统计学 2026-05-15 Zelong Bi , Pierre Lafaye de Micheaux

Manifold learning flows are a class of generative modelling techniques that assume a low-dimensional manifold description of the data. The embedding of such a manifold into the high-dimensional space of the data is achieved via learnable…

机器学习 · 统计学 2025-03-07 Kyriakos Flouris , Ender Konukoglu

Person re-identification is challenging due to the large variations of pose, illumination, occlusion and camera view. Owing to these variations, the pedestrian data is distributed as highly-curved manifolds in the feature space, despite the…

计算机视觉与模式识别 · 计算机科学 2016-11-02 Hailin Shi , Yang Yang , Xiangyu Zhu , Shengcai Liao , Zhen Lei , Weishi Zheng , Stan Z. Li

Manifold learning and dimensionality reduction techniques are ubiquitous in science and engineering, but can be computationally expensive procedures when applied to large data sets or when similarities are expensive to compute. To date,…

机器学习 · 统计学 2017-04-05 Keith Levin , Vince Lyzinski

Ensemble methods are generally regarded to be better than a single model if the base learners are deemed to be "accurate" and "diverse." Here we investigate a semi-supervised ensemble learning strategy to produce generalizable blind image…

计算机视觉与模式识别 · 计算机科学 2021-07-01 Zhihua Wang , Dingquan Li , Kede Ma

This study proposes a framework for manifold learning of image patches using the concept of equivalence classes: manifold modeling in quotient space (MMQS). In MMQS, we do not consider a set of local patches of the image as it is, but…

计算机视觉与模式识别 · 计算机科学 2022-03-11 Tatsuya Yokota , Hidekata Hontani

In label-noise learning, estimating the transition matrix has attracted more and more attention as the matrix plays an important role in building statistically consistent classifiers. However, it is very challenging to estimate the…

机器学习 · 计算机科学 2022-06-08 De Cheng , Tongliang Liu , Yixiong Ning , Nannan Wang , Bo Han , Gang Niu , Xinbo Gao , Masashi Sugiyama

This paper studies the unsupervised embedding learning problem, which requires an effective similarity measurement between samples in low-dimensional embedding space. Motivated by the positive concentrated and negative separated properties…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Mang Ye , Xu Zhang , Pong C. Yuen , Shih-Fu Chang

In this paper, we aim at tackling a general but interesting cross-modality feature learning question in remote sensing community --- can a limited amount of highly-discrimin-ative (e.g., hyperspectral) training data improve the performance…

计算机视觉与模式识别 · 计算机科学 2019-12-19 Danfeng Hong , Naoto Yokoya , Nan Ge , Jocelyn Chanussot , Xiao Xiang Zhu

Existing manifold learning methods are not appropriate for image retrieval task, because most of them are unable to process query image and they have much additional computational cost especially for large scale database. Therefore, we…

计算机视觉与模式识别 · 计算机科学 2018-04-04 Jian Xu , Chunheng Wang , Chengzuo Qi , Cunzhao Shi , Baihua Xiao