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Color distortion can introduce a significant damage in visual quality perception, however, most of existing reduced-reference quality measures are designed for grayscale images. In this paper, we consider a basic extension of well-known…

Computer Vision and Pattern Recognition · Computer Science 2014-12-01 Mounir Omari , Mohammed El Hassouni , Hocine Cherifi , Abdelkaher Ait Abdelouahad

Existing reference (RF)-based super-resolution (SR) models try to improve perceptual quality in SR under the assumption of the availability of high-resolution RF images paired with low-resolution (LR) inputs at testing. As the RF images…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Mohammad Saeed Rad , Thomas Yu , Behzad Bozorgtabar , Jean-Philippe Thiran

We present a method that takes as input a single dual-pixel image, and simultaneously estimates the image's defocus map -- the amount of defocus blur at each pixel -- and recovers an all-in-focus image. Our method is inspired from recent…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Shumian Xin , Neal Wadhwa , Tianfan Xue , Jonathan T. Barron , Pratul P. Srinivasan , Jiawen Chen , Ioannis Gkioulekas , Rahul Garg

Deep learning techniques have revolutionized the fields of image restoration and image quality assessment in recent years. While image restoration methods typically utilize synthetically distorted training data for training, deep quality…

Image and Video Processing · Electrical Eng. & Systems 2023-11-29 Hakan Emre Gedik , Abhinau K. Venkataramanan , Alan C. Bovik

Treating images as data has become increasingly popular in political science. While existing classifiers for images reach high levels of accuracy, it is difficult to systematically assess the visual features on which they base their…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Stefan Scholz , Nils B. Weidmann , Zachary C. Steinert-Threlkeld , Eda Keremoğlu , Bastian Goldlücke

The growing number of dimensionality reduction methods available for data visualization has recently inspired the development of quality assessment measures, in order to evaluate the resulting low-dimensional representation independently…

Machine Learning · Computer Science 2011-10-19 Wouter Lueks , Bassam Mokbel , Michael Biehl , Barbara Hammer

Image quality assessment (IQA) is an active research area in the field of image processing. Most prior works focus on visual quality of natural images captured by cameras. In this paper, we explore visual quality of scanned documents,…

Image and Video Processing · Electrical Eng. & Systems 2023-07-26 Justin Yang , Peter Bauer , Todd Harris , Changhyung Lee , Hyeon Seok Seo , Jan P Allebach , Fengqing Zhu

Recent research has widely explored the problem of aesthetics assessment of images with generic content. However, few approaches have been specifically designed to predict the aesthetic quality of images containing human faces, which make…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Simone Bianco , Luigi Celona , Raimondo Schettini

Image identification is one of the most challenging tasks in different areas of computer vision. Scale-invariant feature transform is an algorithm to detect and describe local features in images to further use them as an image matching…

Computer Vision and Pattern Recognition · Computer Science 2018-03-15 Ebrahim Karami , Mohamed Shehata , Andrew Smith

Deep learning based methods have achieved remarkable success in image restoration and enhancement, but most such methods rely on RGB input images. These methods fail to take into account the rich spectral distribution of natural images. We…

Image and Video Processing · Electrical Eng. & Systems 2021-02-11 Harsh Sinha , Aditya Mehta , Murari Mandal , Pratik Narang

Low-light images, i.e. the images captured in low-light conditions, suffer from very poor visibility caused by low contrast, color distortion and significant measurement noise. Low-light image enhancement is about improving the visibility…

Image and Video Processing · Electrical Eng. & Systems 2020-07-08 Jinxiu Liang , Yong Xu , Yuhui Quan , Jingwen Wang , Haibin Ling , Hui Ji

Virtual Reality (VR) and its applications have attracted significant and increasing attention. However, the requirements of much larger file sizes, different storage formats, and immersive viewing conditions pose significant challenges to…

Image and Video Processing · Electrical Eng. & Systems 2022-04-06 Meixu Chen , Yize Jin , Todd Goodall , Xiangxu Yu , Alan C. Bovik

Image quality databases are used to train models for predicting subjective human perception. However, most existing databases focus on distortions commonly found in digital media and not in natural conditions. Affine transformations are…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Paula Daudén-Oliver , David Agost-Beltran , Emilio Sansano-Sansano , Valero Laparra , Jesús Malo , Marina Martínez-Garcia

Recent studies have shown that deep convolutional neural networks (DCNN) are vulnerable to adversarial examples and sensitive to perceptual quality as well as the acquisition condition of images. These findings raise a big concern for the…

Machine Learning · Computer Science 2020-04-15 Yeli Feng , Yiyu Cai

This article discuss the problem of color image content comparison. Particularly, methods of image content comparison are analyzed, restrictions of color histogram are described and a modified method of images content comparison is…

Computer Vision and Pattern Recognition · Computer Science 2018-04-05 Anas M. Al-Oraiqat , Natalya S. Kostyukova

This paper studies the problem of full reference visual quality assessment of denoised images with a special emphasis on images with low contrast and noise-like texture. Denoising of such images together with noise removal often results in…

Computer Vision and Pattern Recognition · Computer Science 2017-11-03 Karen Egiazarian , Mykola Ponomarenko , Vladimir Lukin , Oleg Ieremeiem

The paper proposes a new high spatial resolution hyperspectral (HR-HS) image estimation method based on convex optimization. The method assumes a low spatial resolution HS (LR-HS) image and a guide image as observations, where both…

Image and Video Processing · Electrical Eng. & Systems 2023-02-08 Saori Takeyama , Shunsuke Ono

State-of-the-art Deep Neural Networks can be easily fooled into providing incorrect high-confidence predictions for images with small amounts of adversarial noise. Does this expose a flaw with deep neural networks, or do we simply need a…

Computer Vision and Pattern Recognition · Computer Science 2017-07-25 Akshayvarun Subramanya , Suraj Srinivas , R. Venkatesh Babu

Distinguishing subtle differences in attributes is valuable, yet learning to make visual comparisons remains non-trivial. Not only is the number of possible comparisons quadratic in the number of training images, but also access to images…

Computer Vision and Pattern Recognition · Computer Science 2018-04-09 Aron Yu , Kristen Grauman

Real-world stereo image super-resolution has a significant influence on enhancing the performance of computer vision systems. Although existing methods for single-image super-resolution can be applied to improve stereo images, these methods…

Image and Video Processing · Electrical Eng. & Systems 2023-12-14 Yuanbo Zhou , Yuyang Xue , Jiang Bi , Wenlin He , Xinlin Zhang , Jiajun Zhang , Wei Deng , Ruofeng Nie , Junlin Lan , Qinquan Gao , Tong Tong