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The generative adversarial network (GAN) is successfully applied to study the perceptual single image superresolution (SISR). However, the GAN often tends to generate images with high frequency details being inconsistent with the real ones.…

Image and Video Processing · Electrical Eng. & Systems 2021-12-28 Ziyang Liu , Zhengguo Li , Xingming Wu , Zhong Liu , Weihai Chen

Most of current display devices are with eight or higher bit-depth. However, the quality of most multimedia tools cannot achieve this bit-depth standard for the generating images. De-quantization can improve the visual quality of low…

Image and Video Processing · Electrical Eng. & Systems 2020-04-08 Yang Zhang , Changhui Hu , Xiaobo Lu

Deep learning algorithms produces state-of-the-art results for different machine learning and computer vision tasks. To perform well on a given task, these algorithms require large dataset for training. However, deep learning algorithms…

Machine Learning · Computer Science 2019-04-03 Talha Iqbal , Hazrat Ali

In the field of medical image analysis, there is a substantial need for high-resolution (HR) images to improve diagnostic accuracy. However, it is a challenging task to obtain HR medical images, as it requires advanced instruments and…

Image and Video Processing · Electrical Eng. & Systems 2024-11-25 Alireza Aghelan , Modjtaba Rouhani

Acquiring High Resolution (HR) Magnetic Resonance (MR) images requires the patient to remain still for long periods of time, which causes patient discomfort and increases the probability of motion induced image artifacts. A possible…

Image and Video Processing · Electrical Eng. & Systems 2019-12-23 Rewa Sood , Binit Topiwala , Karthik Choutagunta , Rohit Sood , Mirabela Rusu

High-resolution (HR) magnetic resonance images (MRI) provide detailed anatomical information important for clinical application and quantitative image analysis. However, HR MRI conventionally comes at the cost of longer scan time, smaller…

Computer Vision and Pattern Recognition · Computer Science 2018-06-12 Yuhua Chen , Feng Shi , Anthony G. Christodoulou , Zhengwei Zhou , Yibin Xie , Debiao Li

This paper presents a generative adversarial network based super-resolution (SR) approach (which is called as S2GAN) to enhance the spatial resolution of Sentinel-2 spectral bands. The proposed approach consists of two main steps. The first…

Image and Video Processing · Electrical Eng. & Systems 2020-11-24 Kexin Zhang , Gencer Sumbul , Begüm Demir

While Generative Adversarial Networks (GANs) have seen huge successes in image synthesis tasks, they are notoriously difficult to adapt to different datasets, in part due to instability during training and sensitivity to hyperparameters.…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Animesh Karnewar , Oliver Wang

Many applications such as forensics, surveillance, satellite imaging, medical imaging, etc., demand High-Resolution (HR) images. However, obtaining an HR image is not always possible due to the limitations of optical sensors and their…

Image and Video Processing · Electrical Eng. & Systems 2022-11-23 Dhruv Patel , Abhinav Jain , Simran Bawkar , Manav Khorasiya , Kalpesh Prajapati , Kishor Upla , Kiran Raja , Raghavendra Ramachandra , Christoph Busch

Convolutional Neural Networks (CNNs) have been consistently proved state-of-the-art results in image Super-Resolution (SR), representing an exceptional opportunity for the remote sensing field to extract further information and knowledge…

Image and Video Processing · Electrical Eng. & Systems 2020-11-02 Francesco Salvetti , Vittorio Mazzia , Aleem Khaliq , Marcello Chiaberge

Super-Resolution (SR) is a time-hallowed image processing problem that aims to improve the quality of a Low-Resolution (LR) sample up to the standard of its High-Resolution (HR) counterpart. We aim to address this by introducing…

Image and Video Processing · Electrical Eng. & Systems 2024-04-10 Arkaprabha Basu , Kushal Bose , Sankha Subhra Mullick , Anish Chakrabarty , Swagatam Das

Single Image Super Resolution (SISR) is the task of producing a high resolution (HR) image from a given low-resolution (LR) image. It is a well researched problem with extensive commercial applications such as digital camera, video…

Multimedia · Computer Science 2019-03-29 Jingwei Guan , Cheng Pan , Songnan Li , Dahai Yu

Generative adversarial network (GAN) for image super-resolution (SR) has attracted enormous interests in recent years. However, the GAN-based SR methods only use image discriminator to distinguish SR images and high-resolution (HR) images.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Xuan Zhu , Yue Cheng , Jinye Peng , Rongzhi Wang , Mingnan Le , Xin Liu

Anatomical landmark segmentation and pathology localization are important steps in automated analysis of medical images. They are particularly challenging when the anatomy or pathology is small, as in retinal images and cardiac MRI, or when…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Dwarikanath Mahapatra , Behzad Bozorgtabar

Generative Adversarial Networks (GAN) have demonstrated the potential to recover realistic details for single image super-resolution (SISR). To further improve the visual quality of super-resolved results, PIRM2018-SR Challenge employed…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Wenlong Zhang , Yihao Liu , Chao Dong , Yu Qiao

Over the past decade, many Super Resolution techniques have been developed using deep learning. Among those, generative adversarial networks (GAN) and very deep convolutional networks (VDSR) have shown promising results in terms of HR image…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Saifuddin Hitawala , Yao Li , Xian Wang , Dongyang Yang

Generative Adversarial Networks (GAN) have demonstrated the potential to recover realistic details for single image super-resolution (SISR). To further improve the visual quality of super-resolved results, PIRM2018-SR Challenge employed…

Computer Vision and Pattern Recognition · Computer Science 2021-07-21 Wenlong Zhang , Yihao Liu , Chao Dong , Yu Qiao

In the last few years, several deep learning models, especially Generative Adversarial Networks have received a lot of attention for the task of Single Image Super-Resolution (SISR). These methods focus on building an end-to-end framework,…

Image and Video Processing · Electrical Eng. & Systems 2020-10-12 Vibhu Bhatia , Yatender Kumar

Deep neural networks for image quality enhancement typically need large quantities of highly-curated training data comprising pairs of low-quality images and their corresponding high-quality images. While high-quality image acquisition is…

Image and Video Processing · Electrical Eng. & Systems 2021-06-30 Uddeshya Upadhyay , Suyash Awate

Compressed sensing (CS) leverages the sparsity prior to provide the foundation for fast magnetic resonance imaging (fastMRI). However, iterative solvers for ill-posed problems hinder their adaption to time-critical applications. Moreover,…

Image and Video Processing · Electrical Eng. & Systems 2021-03-16 Jingshuai Liu , Mehrdad Yaghoobi