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Objective quality assessment of 3D point clouds is essential for the development of immersive multimedia systems in real-world applications. Despite the success of perceptual quality evaluation for 2D images and videos, blind/no-reference…

Multimedia · Computer Science 2022-09-01 Wei Zhou , Qi Yang , Qiuping Jiang , Guangtao Zhai , Weisi Lin

In this paper, we propose a novel quadratic optimized model based on the deep convolutional neural network (QODCNN) for full-reference and no-reference screen content image (SCI) quality assessment. Unlike traditional CNN methods taking all…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Xuhao Jiang , Liquan Shen , Guorui Feng , Liangwei Yu , Ping An

An innovative way of calculating the von Mises distribution (VMD) of image entropy is introduced in this paper. The VMD's concentration parameter and some fitness parameter that will be later defined, have been analyzed in the experimental…

Computer Vision and Pattern Recognition · Computer Science 2015-06-04 Salvador Gabarda , Gabriel Cristobal

The quality of frames is significant for both research and application of video frame interpolation (VFI). In recent VFI studies, the methods of full-reference image quality assessment have generally been used to evaluate the quality of VFI…

Image and Video Processing · Electrical Eng. & Systems 2023-12-27 Jinliang Han , Xiongkuo Min , Yixuan Gao , Jun Jia , Lei Sun , Zuowei Cao , Yonglin Luo , Guangtao Zhai

With neural video codecs (NVCs) emerging as promising alternatives for traditional compression methods, it is increasingly important to determine whether existing quality metrics remain valid for evaluating their performance. However, few…

Image and Video Processing · Electrical Eng. & Systems 2026-05-19 Benjamin Herb , Rakesh Rao Ramachandra Rao , Steve Göring , Alexander Raake

Video quality significantly affects video classification. We found this problem when we classified Mild Cognitive Impairment well from clear videos, but worse from blurred ones. From then, we realized that referring to Video Quality…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Jian Sun , Mohammad H. Mahoor

Image super-resolution (SR) has been widely investigated in recent years. However, it is challenging to fairly estimate the performance of various SR methods, as the lack of reliable and accurate criteria for the perceptual quality.…

Image and Video Processing · Electrical Eng. & Systems 2024-10-28 Yuqing Liu , Qi Jia , Shanshe Wang , Siwei Ma , Wen Gao

Motion estimation is one of the important procedures in the all video encoders. Most of the complexity of the video coder depends on the complexity of the motion estimation step. The original motion estimation algorithm has a remarkable…

Image and Video Processing · Electrical Eng. & Systems 2018-03-14 Amin Banitalebi , Said Nader-Esfahani , Alireza Nasiri Avanaki

Learning-based, single-view depth estimation often generalizes poorly to unseen datasets. While learning-based, two-frame depth estimation solves this problem to some extent by learning to match features across frames, it performs poorly at…

Computer Vision and Pattern Recognition · Computer Science 2018-05-18 Rui Wang , Jan-Michael Frahm , Stephen M. Pizer

Depth estimation from a single image in the wild remains a challenging problem. One main obstacle is the lack of high-quality training data for images in the wild. In this paper we propose a method to automatically generate such data…

Computer Vision and Pattern Recognition · Computer Science 2019-04-25 Weifeng Chen , Shengyi Qian , Jia Deng

The rapid advancement of generative models has led to a growing volume of AI-generated videos, making the automatic quality assessment of such videos increasingly important. Existing AI-generated content video quality assessment (AIGC-VQA)…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Minghao Zou , Gen Liu , Guanghui Yue , Baoquan Zhao , Zhihua Wang , Paul L. Rosin , Hantao Liu , Wei Zhou

Non-reference metrics (NRMs) can assess the visual quality of images and videos without a reference, making them well-suited for the evaluation of user-generated content. Nonetheless, rate-distortion optimization (RDO) in video coding is…

Image and Video Processing · Electrical Eng. & Systems 2026-02-18 Xin Xiong , Samuel Fernández-Menduiña , Eduardo Pavez , Antonio Ortega , Neil Birkbeck , Balu Adsumilli

This paper presents a novel semi-supervised deep learning algorithm for retrieving similar 2D and 3D videos based on visual content. The proposed approach combines the power of deep convolutional and recurrent neural networks with dynamic…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Yintai Ma , Diego Klabjan

This contribution proposes a full-reference Human-Visual-System based 3D video quality metric. In this report, the presented metric is used to evaluate the quality of compressed stereo pair formed from a decoded view and a synthesized view.…

Image and Video Processing · Electrical Eng. & Systems 2018-03-16 Amin Banitalebi-Dehkordi , Mahsa T. Pourazad , Panos Nasiopoulos

Video Quality Assessment (VQA), which aims to predict the perceptual quality of a video, has attracted raising attention with the rapid development of streaming media technology, such as Facebook, TikTok, Kwai, and so on. Compared with…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Kun Yuan , Zishang Kong , Chuanchuan Zheng , Ming Sun , Xing Wen

In recent years, deep learning has achieved promising success for multimedia quality assessment, especially for image quality assessment (IQA). However, since there exist more complex temporal characteristics in videos, very little work has…

Image and Video Processing · Electrical Eng. & Systems 2020-09-09 Wei Zhou , Zhibo Chen

Automatically recognizing surgical gestures is a crucial step towards a thorough understanding of surgical skill. Possible areas of application include automatic skill assessment, intra-operative monitoring of critical surgical steps, and…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Isabel Funke , Sebastian Bodenstedt , Florian Oehme , Felix von Bechtolsheim , Jürgen Weitz , Stefanie Speidel

The no-reference image quality assessment is a challenging domain that addresses estimating image quality without the original reference. We introduce an improved mechanism to extract local and non-local information from images via…

Image and Video Processing · Electrical Eng. & Systems 2024-09-12 Mohammed Alsaafin , Musab Alsheikh , Saeed Anwar , Muhammad Usman

We propose a view-invariant method towards the assessment of the quality of human movements which does not rely on skeleton data. Our end-to-end convolutional neural network consists of two stages, where at first a view-invariant trajectory…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Faegheh Sardari , Adeline Paiement , Sion Hannuna , Majid Mirmehdi

The video quality assessment (VQA) technology has attracted a lot of attention in recent years due to an increasing demand of video streaming services. Existing VQA methods are designed to predict video quality in terms of the mean opinion…

Multimedia · Computer Science 2018-07-31 Haiqiang Wang , Ioannis Katsavounidis , Xinfeng Zhang , Chao Yang , C. -C. Jay Kuo