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Hyperspectral Imaging is a crucial tool in remote sensing which captures far more spectral information than standard color images. However, the increase in spectral information comes at the cost of spatial resolution. Super-resolution is a…

Image and Video Processing · Electrical Eng. & Systems 2023-10-26 Alexander Ulrichsen , Paul Murray , Stephen Marshall , Moncef Gabbouj , Serkan Kiranyaz , Mehmet Yamac , Nour Aburaed

Omnidirectional image and video super-resolution is a crucial research topic in low-level vision, playing an essential role in virtual reality and augmented reality applications. Its goal is to reconstruct high-resolution images or video…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Qianqian Zhao , Chunle Guo , Tianyi Zhang , Junpei Zhang , Peiyang Jia , Tan Su , Wenjie Jiang , Chongyi Li

We address the challenge of applying existing convolutional neural network (CNN) architectures to compressed images. Existing CNN architectures represent images as a matrix of pixel intensities with a specified dimension; this desired…

Computer Vision and Pattern Recognition · Computer Science 2019-11-22 Christopher A. George , Bradley M. West

With the rapid advancement of stereo vision technologies, stereo image compression has emerged as a crucial field that continues to draw significant attention. Previous approaches have primarily employed a unidirectional paradigm, where the…

Image and Video Processing · Electrical Eng. & Systems 2024-10-29 Zhening Liu , Xinjie Zhang , Jiawei Shao , Zehong Lin , Jun Zhang

Deep learning-based image compression has made great progresses recently. However, many leading schemes use serial context-adaptive entropy model to improve the rate-distortion (R-D) performance, which is very slow. In addition, the…

Image and Video Processing · Electrical Eng. & Systems 2023-09-07 Haisheng Fu , Feng Liang , Jie Liang , Yongqiang Wang , Guohe Zhang , Jingning Han

Omnidirectional image (ODI) data is captured with a 360x180 field-of-view, which is much wider than the pinhole cameras and contains richer spatial information than the conventional planar images. Accordingly, omnidirectional vision has…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Hao Ai , Zidong Cao , Jinjing Zhu , Haotian Bai , Yucheng Chen , Lin Wang

Image compression has been investigated as a fundamental research topic for many decades. Recently, deep learning has achieved great success in many computer vision tasks, and is gradually being used in image compression. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-04-26 Zhengxue Cheng , Heming Sun , Masaru Takeuchi , Jiro Katto

Implicit Neural Representation (INR) is an innovative approach for representing complex shapes or objects without explicitly defining their geometry or surface structure. Instead, INR represents objects as continuous functions. Previous…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Hanqiu Chen , Hang Yang , Stephen Fitzmeyer , Cong Hao

Super-resolution (SR) has traditionally been based on pairs of high-resolution images (HR) and their low-resolution (LR) counterparts obtained artificially with bicubic downsampling. However, in real-world SR, there is a large variety of…

Image and Video Processing · Electrical Eng. & Systems 2020-11-06 Mohammad Saeed Rad , Thomas Yu , Claudiu Musat , Hazim Kemal Ekenel , Behzad Bozorgtabar , Jean-Philippe Thiran

360{\deg} omnidirectional images have gained research attention due to their immersive and interactive experience, particularly in AR/VR applications. However, they suffer from lower angular resolution due to being captured by fisheye…

Image and Video Processing · Electrical Eng. & Systems 2023-04-27 Xiaopeng Sun , Weiqi Li , Zhenyu Zhang , Qiufang Ma , Xuhan Sheng , Ming Cheng , Haoyu Ma , Shijie Zhao , Jian Zhang , Junlin Li , Li Zhang

Tomographic image reconstruction is relevant for many medical imaging modalities including X-ray, ultrasound (US) computed tomography (CT) and photoacoustics, for which the access to full angular range tomographic projections might be not…

Image and Video Processing · Electrical Eng. & Systems 2019-06-14 Valery Vishnevskiy , Richard Rau , Orcun Goksel

Dilated Convolutions have been shown to be highly useful for the task of image segmentation. By introducing gaps into convolutional filters, they enable the use of larger receptive fields without increasing the original kernel size. Even…

Computer Vision and Pattern Recognition · Computer Science 2019-03-20 Thomas Ziegler , Manuel Fritsche , Lorenz Kuhn , Konstantin Donhauser

Compact convolutional neural networks gain efficiency mainly through depthwise convolutions, expanded channels and complex topologies, which contrarily aggravate the training process. Besides, 3x3 kernels dominate the spatial representation…

Computer Vision and Pattern Recognition · Computer Science 2019-05-23 Shuang Wu , Guanrui Wang , Pei Tang , Feng Chen , Luping Shi

In this paper, we propose a distortion-aware loop filtering model to improve the performance of intra coding for 360$^o$ videos projected via equirectangular projection (ERP) format. To enable the awareness of distortion, our proposed…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Pingping Zhang , Xu Wang , Linwei Zhu , Yun Zhang , Shiqi Wang , Sam Kwong

Semantic segmentation, which aims to classify every pixel in an image, is a key task in machine perception, with many applications across robotics and autonomous driving. Due to the high dimensionality of this task, most existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-10-04 Alex Zihao Zhu , Jieru Mei , Siyuan Qiao , Hang Yan , Yukun Zhu , Liang-Chieh Chen , Henrik Kretzschmar

Sparse representation using over-complete dictionaries have shown to produce good quality results in various image processing tasks. Dictionary learning algorithms have made it possible to engineer data adaptive dictionaries which have…

Image and Video Processing · Electrical Eng. & Systems 2019-11-11 Nishant Deepak Keni , Amol Mangirish Singbal , Rizwan Ahmed

Learning the manifold structure of remote sensing images is of paramount relevance for modeling and understanding processes, as well as to encapsulate the high dimensionality in a reduced set of informative features for subsequent…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Gulsen Taskin , Gustau Camps-Valls

Efficient and high-fidelity prior sampling and inversion for complex geological media is still a largely unsolved challenge. Here, we use a deep neural network of the variational autoencoder type to construct a parametric low-dimensional…

Machine Learning · Statistics 2017-10-26 Eric Laloy , Romain Hérault , John Lee , Diederik Jacques , Niklas Linde

Learned image compression methods have shown superior rate-distortion performance and remarkable potential compared to traditional compression methods. Most existing learned approaches use stacked convolution or window-based self-attention…

Image and Video Processing · Electrical Eng. & Systems 2024-01-03 Huairui Wang , Nianxiang Fu , Zhenzhong Chen , Shan Liu

Deep neural networks represent a powerful class of function approximators that can learn to compress and reconstruct images. Existing image compression algorithms based on neural networks learn quantized representations with a constant…

Computer Vision and Pattern Recognition · Computer Science 2018-02-09 David Minnen , George Toderici , Michele Covell , Troy Chinen , Nick Johnston , Joel Shor , Sung Jin Hwang , Damien Vincent , Saurabh Singh