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The acquisition of light field images with high angular resolution is costly. Although many methods have been proposed to improve the angular resolution of a sparsely-sampled light field, they always focus on the light field with a small…

Computer Vision and Pattern Recognition · Computer Science 2020-02-27 Jing Jin , Junhui Hou , Hui Yuan , Sam Kwong

Deep convolution-based single image super-resolution (SISR) networks embrace the benefits of learning from large-scale external image resources for local recovery, yet most existing works have ignored the long-range feature-wise…

Computer Vision and Pattern Recognition · Computer Science 2020-06-03 Yiqun Mei , Yuchen Fan , Yuqian Zhou , Lichao Huang , Thomas S. Huang , Humphrey Shi

The single image super-resolution(SISR) algorithms under deep learning currently have two main models, one based on convolutional neural networks and the other based on Transformer. The former uses the stacking of convolutional layers with…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Li Ke , Liu Yukai

Most of the existing learning-based single image superresolution (SISR) methods are trained and evaluated on simulated datasets, where the low-resolution (LR) images are generated by applying a simple and uniform degradation (i.e., bicubic…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Jianrui Cai , Hui Zeng , Hongwei Yong , Zisheng Cao , Lei Zhang

Despite advances in the paradigm of pre-training then fine-tuning in low-level vision tasks, significant challenges persist particularly regarding the increased size of pre-trained models such as memory usage and training time. Another…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Yuanbo Zhou , Yuyang Xue , Wei Deng , Xinlin Zhang , Qinquan Gao , Tong Tong

The License Plate Recognition (LPR) field has made impressive advances in the last decade due to novel deep learning approaches combined with the increased availability of training data. However, it still has some open issues, especially…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Valfride Nascimento , Rayson Laroca , Jorge de A. Lambert , William Robson Schwartz , David Menotti

Light field (LF) images can be used to improve the performance of image super-resolution (SR) because both angular and spatial information is available. It is challenging to incorporate distinctive information from different views for LF…

Image and Video Processing · Electrical Eng. & Systems 2021-11-29 Yu Mo , Yingqian Wang , Chao Xiao , Jungang Yang , Wei An

Recent single-image super-resolution (SISR) networks, which can adapt their network parameters to specific input images, have shown promising results by exploiting the information available within the input data as well as large external…

Computer Vision and Pattern Recognition · Computer Science 2021-03-19 Jinsu Yoo , Tae Hyun Kim

Light field (LF) image super-resolution (SR) is a challenging problem due to its inherent ill-posed nature, where a single low-resolution (LR) input LF image can correspond to multiple potential super-resolved outcomes. Despite this…

Image and Video Processing · Electrical Eng. & Systems 2023-11-29 Wentao Chao , Fuqing Duan , Xuechun Wang , Yingqian Wang , Guanghui Wang

Deep neural networks have achieved remarkable success in single image super-resolution (SISR). The computing and memory requirements of these methods have hindered their application to broad classes of real devices with limited computing…

Computer Vision and Pattern Recognition · Computer Science 2018-06-06 Lei Zhang , Peng Wang , Chunhua Shen , Lingqiao Liu , Wei Wei , Yanning Zhang , Anton van den Hengel

Single image super-resolution (SISR) is the task of inferring a high-resolution image from a single low-resolution image. Recent research on super-resolution has achieved great progress due to the development of deep convolutional neural…

Image and Video Processing · Electrical Eng. & Systems 2019-11-22 Zhengyang Lu , Ying Chen

Light field cameras have been proved to be powerful tools for 3D reconstruction and virtual reality applications. However, the limited resolution of light field images brings a lot of difficulties for further information display and…

Image and Video Processing · Electrical Eng. & Systems 2020-08-27 Qingyan Sun , Shuo Zhang , Song Chang , Lixi Zhu , Youfang Lin

Traditional single image super-resolution (SISR) methods that focus on solving single and uniform degradation (i.e., bicubic down-sampling), typically suffer from poor performance when applied into real-world low-resolution (LR) images due…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Xin Li , Xin Jin , Tao Yu , Yingxue Pang , Simeng Sun , Zhizheng Zhang , Zhibo Chen

This paper explores the problem of reconstructing high-resolution light field (LF) images from hybrid lenses, including a high-resolution camera surrounded by multiple low-resolution cameras. To tackle this challenge, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Jing Jin , Junhui Hou , Jie Chen , Sam Kwong , Jingyi Yu

Spatial resolution is a critical imaging parameter in magnetic resonance imaging (MRI). Acquiring high resolution MRI data usually takes long scanning time and would subject to motion artifacts due to hardware, physical, and physiological…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Zhao Xiaole , Huali Zhang , Hangfei Liu , Yun Qin , Tao Zhang , Xueming Zou

Most image super-resolution (SR) methods are developed on synthetic low-resolution (LR) and high-resolution (HR) image pairs that are constructed by a predetermined operation, e.g., bicubic downsampling. As existing methods typically learn…

Image and Video Processing · Electrical Eng. & Systems 2021-09-09 Sanghyun Son , Jaeha Kim , Wei-Sheng Lai , Ming-Husan Yang , Kyoung Mu Lee

Recent years have witnessed the unprecedented success of deep convolutional neural networks (CNNs) in single image super-resolution (SISR). However, existing CNN-based SISR methods mostly assume that a low-resolution (LR) image is bicubicly…

Computer Vision and Pattern Recognition · Computer Science 2018-05-25 Kai Zhang , Wangmeng Zuo , Lei Zhang

Most single image super-resolution (SR) methods are developed on synthetic low-resolution (LR) and high-resolution (HR) image pairs, which are simulated by a predetermined degradation operation, e.g., bicubic downsampling. However, these…

Image and Video Processing · Electrical Eng. & Systems 2021-10-22 Rui Ma , Johnathan Czernik , Xian Du

Recently, the single image super-resolution (SISR) approaches with deep and complex convolutional neural network structures have achieved promising performance. However, those methods improve the performance at the cost of higher memory…

Image and Video Processing · Electrical Eng. & Systems 2021-06-23 Zhengxue Wang , Guangwei Gao , Juncheng Li , Yi Yu , Huimin Lu

Deep learning based methods have recently pushed the state-of-the-art on the problem of Single Image Super-Resolution (SISR). In this work, we revisit the more traditional interpolation-based methods, that were popular before, now with the…

Computer Vision and Pattern Recognition · Computer Science 2017-12-19 Xu Jia , Hong Chang , Tinne Tuytelaars