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Image quality assessment is critical to control and maintain the perceived quality of visual content. Both subjective and objective evaluations can be utilised, however, subjective image quality assessment is currently considered the most…

图像与视频处理 · 电气工程与系统科学 2019-12-17 Lucie Lévêque , Soumyabrata Dev , Murhaf Hossari , Yee Hui Lee , Stefan Winkler

With technology for digital photography and high resolution displays rapidly evolving and gaining popularity, there is a growing demand for blind image quality assessment (BIQA) models for high resolution images. Unfortunately, the publicly…

计算机视觉与模式识别 · 计算机科学 2024-01-30 Huang Huang , Qiang Wan , Jari Korhonen

Recent years have witnessed remarkable achievements in perceptual image restoration (IR), creating an urgent demand for accurate image quality assessment (IQA), which is essential for both performance comparison and algorithm optimization.…

图像与视频处理 · 电气工程与系统科学 2026-04-01 Xiangfei Sheng , Xiaofeng Pan , Zhichao Yang , Pengfei Chen , Leida Li

Nowadays digital image compression and decompression techniques are very much important. So our aim is to calculate the quality of face and other regions of the compressed image with respect to the original image. Image segmentation is…

计算机视觉与模式识别 · 计算机科学 2014-02-07 Abhishek Bhattacharya , Tanusree Chatterjee

We propose a novel certified defense method for Image Quality Assessment (IQA) models based on randomized smoothing with noise applied in the feature space rather than the input space. Unlike prior approaches that inject Gaussian noise…

计算机视觉与模式识别 · 计算机科学 2025-08-08 Ekaterina Shumitskaya , Dmitriy Vatolin , Anastasia Antsiferova

Score-based diffusion models provide a powerful way to model images using the gradient of the data distribution. Leveraging the learned score function as a prior, here we introduce a way to sample data from a conditional distribution given…

图像与视频处理 · 电气工程与系统科学 2022-07-19 Hyungjin Chung , Jong Chul Ye

Existing 3D human pose estimation models suffer performance drop when applying to new scenarios with unseen poses due to their limited generalizability. In this work, we propose a novel framework, Inference Stage Optimization (ISO), for…

计算机视觉与模式识别 · 计算机科学 2020-07-07 Jianfeng Zhang , Xuecheng Nie , Jiashi Feng

Super-resolution (SR), a classical inverse problem in computer vision, is inherently ill-posed, inducing a distribution of plausible solutions for every input. However, the desired result is not simply the expectation of this distribution,…

计算机视觉与模式识别 · 计算机科学 2025-04-28 Fengjia Zhang , Samrudhdhi B. Rangrej , Tristan Aumentado-Armstrong , Afsaneh Fazly , Alex Levinshtein

Recent years have witnessed the rapid development of image storage and transmission systems, in which image compression plays an important role. Generally speaking, image compression algorithms are developed to ensure good visual quality at…

计算机视觉与模式识别 · 计算机科学 2022-06-09 Zicheng Zhang , Wei Sun , Wei Wu , Ying Chen , Xiongkuo Min , Guangtao Zhai

Accurate prediction of local distortion visibility thresholds is critical in many image and video processing applications. Existing methods require an accurate modeling of the human visual system, and are derived through pshycophysical…

多媒体 · 计算机科学 2018-03-13 Navaneeth Kamballur Kottayil , Giuseppe Valenzise , Frederic Dufaux , Irene Cheng

Several metrics exist to quantify the similarity between images, but they are inefficient when it comes to measure the similarity of highly distorted images. In this work, we propose to empirically investigate perceptual metrics based on…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Rémi Kazmierczak , Gianni Franchi , Nacim Belkhir , Antoine Manzanera , David Filliat

In the context of QoE management, network and service providers commonly rely on models that map system QoS conditions (e.g., system response time, paket loss, etc.) to estimated end user QoE values. Observable QoS conditions in the system…

多媒体 · 计算机科学 2020-03-31 Tobias Hossfeld , Poul E. Heegaard , Martin Varela , Lea Skorin-Kapov , Markus Fiedler

Score-based diffusion models are a highly effective method for generating samples from a distribution of images. We consider scenarios where the training data comes from a noisy version of the target distribution, and present an efficiently…

机器学习 · 统计学 2025-09-30 Dennis Elbrächter , Giovanni S. Alberti , Matteo Santacesaria

In a subjective experiment to evaluate the perceptual audiovisual quality of multimedia and television services, raw opinion scores collected from test subjects are often noisy and unreliable. To produce the final mean opinion scores (MOS),…

多媒体 · 计算机科学 2021-05-10 Zhi Li , Christos G. Bampis , Lukáš Krasula , Lucjan Janowski , Ioannis Katsavounidis

BIQA (Blind Image Quality Assessment) is an important field of study that evaluates images automatically. Although significant progress has been made, blind image quality assessment remains a difficult task since images vary in content and…

计算机视觉与模式识别 · 计算机科学 2024-10-10 Muhammad Azeem Aslam , Xu Wei , Hassan Khalid , Nisar Ahmed , Zhu Shuangtong , Xin Liu , Yimei Xu

Image quality assessment (IQA) in medical imaging can be used to ensure that downstream clinical tasks can be reliably performed. Quantifying the impact of an image on the specific target tasks, also named as task amenability, is needed. A…

Since the low quality of document images will greatly undermine the chances of success in automatic text recognition and analysis, it is necessary to assess the quality of document images uploaded in online business process, so as to reject…

计算机视觉与模式识别 · 计算机科学 2019-06-06 Hongyu Li , Fan Zhu , Junhua Qiu

Generative models have made immense progress in recent years, particularly in their ability to generate high quality images. However, that quality has been difficult to evaluate rigorously, with evaluation dominated by heuristic approaches…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Y. Alex Kolchinski , Sharon Zhou , Shengjia Zhao , Mitchell Gordon , Stefano Ermon

Promising results for subjective image quality prediction have been achieved during the past few years by using convolutional neural networks (CNN). However, the use of CNNs for high resolution image quality assessment remains a challenge,…

计算机视觉与模式识别 · 计算机科学 2021-06-03 Jari Korhonen , Yicheng Su , Junyong You

Motion blur, out of focus, insufficient spatial resolution, lossy compression and many other factors can all cause an image to have poor quality. However, image quality is a largely ignored issue in traditional pattern recognition…

计算机视觉与模式识别 · 计算机科学 2018-01-22 Fei Yang , Qian Zhang , Miaohui Wang , Guoping Qiu