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In most practical situations, the compression or transmission of images and videos creates distortions that will eventually be perceived by a human observer. Vice versa, image and video restoration techniques, such as inpainting or…

Computer Vision and Pattern Recognition · Computer Science 2017-11-29 Rafael Reisenhofer , Sebastian Bosse , Gitta Kutyniok , Thomas Wiegand

In the age of streaming and surveillance compressed video enhancement has become a problem in need of constant improvement. Here, we investigate a way of improving the Multi-Frame Quality Enhancement approach. This approach consists of…

Image and Video Processing · Electrical Eng. & Systems 2022-01-28 Dionne Takudzwa Chasi , Mkhuseli Ngxande

We propose a new model for no-reference video quality assessment (VQA). Our approach uses a new idea of highly-localized space-time (ST) slices called Space-Time Chips (ST Chips). ST Chips are localized cuts of video data along directions…

Image and Video Processing · Electrical Eng. & Systems 2021-10-04 Joshua P. Ebenezer , Zaixi Shang , Yongjun Wu , Hai Wei , Sriram Sethuraman , Alan C. Bovik

Many deep learning based video compression artifact removal algorithms have been proposed to recover high-quality videos from low-quality compressed videos. Recently, methods were proposed to mine spatiotemporal information via utilizing…

Image and Video Processing · Electrical Eng. & Systems 2021-06-01 Yi Xu , Minyi Zhao , Jing Liu , Xinjian Zhang , Longwen Gao , Shuigeng Zhou , Huyang Sun

Video frame interpolation, the synthesis of novel views in time, is an increasingly popular research direction with many new papers further advancing the state of the art. But as each new method comes with a host of variables that affect…

Computer Vision and Pattern Recognition · Computer Science 2020-11-04 Simon Niklaus , Long Mai , Oliver Wang

Video frame interpolation involves the synthesis of new frames from existing ones. Convolutional neural networks (CNNs) have been at the forefront of the recent advances in this field. One popular CNN-based approach involves the application…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Issa Khalifeh , Marc Gorriz Blanch , Ebroul Izquierdo , Marta Mrak

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

Video quality assessment (VQA) is now a fast-growing subject, maturing in the full reference (FR) case, yet challenging in the exploding no reference (NR) case. We investigate variants of the popular VMAF video quality assessment algorithm…

Image and Video Processing · Electrical Eng. & Systems 2021-10-11 Pankaj Topiwala , Wei Dai , Jiangfeng Pian , Katalina Biondi , Arvind Krovvidi

We consider the problem of capturing distortions arising from changes in frame rate as part of Video Quality Assessment (VQA). Variable frame rate (VFR) videos have become much more common, and streamed videos commonly range from 30 frames…

Image and Video Processing · Electrical Eng. & Systems 2022-05-24 Pavan C. Madhusudana , Neil Birkbeck , Yilin Wang , Balu Adsumilli , Alan C. Bovik

In recent years, deep learning techniques have shown significant potential for improving video quality assessment (VQA), achieving higher correlation with subjective opinions compared to conventional approaches. However, the development of…

Image and Video Processing · Electrical Eng. & Systems 2024-06-11 Chen Feng , Duolikun Danier , Fan Zhang , David Bull

Panoramic videos have the advantage of providing an immersive and interactive viewing experience. Nevertheless, their spherical nature gives rise to various and uncertain user viewing behaviors, which poses significant challenges for…

Image and Video Processing · Electrical Eng. & Systems 2024-05-16 Kanglong Fan , Wen Wen , Mu Li , Yifan Peng , Kede Ma

Temporal interpolation has the potential to be a powerful tool for video compression. Existing methods for frame interpolation do not discriminate between video textures and generally invoke a single general model capable of interpolating a…

Image and Video Processing · Electrical Eng. & Systems 2021-08-23 Duolikun Danier , David Bull

This paper considers an efficient video modeling process called Video Latent Flow Matching (VLFM). Unlike prior works, which randomly sampled latent patches for video generation, our method relies on current strong pre-trained image…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Yang Cao , Zhao Song , Chiwun Yang

Although there have been notable advancements in video compression technologies in recent years, banding artifacts remain a serious issue affecting the quality of compressed videos, particularly on smooth regions of high-definition videos.…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Qi Zheng , Li-Heng Chen , Chenlong He , Neil Berkbeck , Yilin Wang , Balu Adsumilli , Alan C. Bovik , Yibo Fan , Zhengzhong Tu

Unlike video coding for professional content, the delivery pipeline of User Generated Content (UGC) involves transcoding where unpristine reference content needs to be compressed repeatedly. In this work, we observe that existing…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 Zihao Qi , Chen Feng , Duolikun Danier , Fan Zhang , Xiaozhong Xu , Shan Liu , David Bull

Video quality is a primary concern for video service providers. In recent years, the techniques of video quality assessment (VQA) based on deep convolutional neural networks (CNNs) have been developed rapidly. Although existing works…

Image and Video Processing · Electrical Eng. & Systems 2022-10-11 Ao-Xiang Zhang , Yuan-Gen Wang , Weixuan Tang , Leida Li , Sam Kwong

Deep learning-based quality metrics have recently given significant improvement in Image Quality Assessment (IQA). In the field of stereoscopic vision, information is evenly distributed with slight disparity to the left and right eyes.…

Image and Video Processing · Electrical Eng. & Systems 2022-11-04 Oussama Messai , Aladine Chetouani

4D medical images, which represent 3D images with temporal information, are crucial in clinical practice for capturing dynamic changes and monitoring long-term disease progression. However, acquiring 4D medical images poses challenges due…

Image and Video Processing · Electrical Eng. & Systems 2024-04-03 JungEun Kim , Hangyul Yoon , Geondo Park , Kyungsu Kim , Eunho Yang

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

In this work, we discuss evaluating video foundation models in a fair and robust manner. Unlike language or image foundation models, many video foundation models are evaluated with differing parameters (such as sampling rate, number of…

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