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Single Image Super-Resolution is a classic computer vision problem that involves estimating high-resolution (HR) images from low-resolution (LR) ones. Although deep neural networks (DNNs), especially Transformers for super-resolution, have…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Leheng Zhang , Yawei Li , Xingyu Zhou , Xiaorui Zhao , Shuhang Gu

Vision Transformers (ViTs) have emerged with superior performance on computer vision tasks compared to convolutional neural network (CNN)-based models. However, ViTs are mainly designed for image classification that generate single-scale…

Computer Vision and Pattern Recognition · Computer Science 2021-11-24 Jiaqi Gu , Hyoukjun Kwon , Dilin Wang , Wei Ye , Meng Li , Yu-Hsin Chen , Liangzhen Lai , Vikas Chandra , David Z. Pan

Single Image Super-Resolution (SISR) is a fundamental computer vision task that aims to reconstruct a high-resolution (HR) image from a low-resolution (LR) input. Transformer-based methods have achieved remarkable performance by modeling…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Chunyu Meng , Wei Long , Shuhang Gu

In recent years, Vision Transformer-based approaches for low-level vision tasks have achieved widespread success. Unlike CNN-based models, Transformers are more adept at capturing long-range dependencies, enabling the reconstruction of…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Chih-Chung Hsu , Chia-Ming Lee , Yi-Shiuan Chou

We explore the application of Vision Transformer (ViT) for handwritten text recognition. The limited availability of labeled data in this domain poses challenges for achieving high performance solely relying on ViT. Previous…

Computer Vision and Pattern Recognition · Computer Science 2024-09-16 Yuting Li , Dexiong Chen , Tinglong Tang , Xi Shen

Recently, a surge of interest in visual transformers is to reduce the computational cost by limiting the calculation of self-attention to a local window. Most current work uses a fixed single-scale window for modeling by default, ignoring…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Pengzhen Ren , Changlin Li , Guangrun Wang , Yun Xiao , Qing Du , Xiaodan Liang , Xiaojun Chang

Transformer architecture has been showing its great strength in visual object tracking, for its effective attention mechanism. Existing transformer-based approaches adopt the pixel-to-pixel attention strategy on flattened image features and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Zikai Song , Junqing Yu , Yi-Ping Phoebe Chen , Wei Yang

Transformer-based methods have shown impressive performance in low-level vision tasks, such as image super-resolution. However, we find that these networks can only utilize a limited spatial range of input information through attribution…

Image and Video Processing · Electrical Eng. & Systems 2023-03-21 Xiangyu Chen , Xintao Wang , Jiantao Zhou , Yu Qiao , Chao Dong

Transformers have emerged as viable alternatives to convolutional neural networks owing to their ability to learn non-local region relationships in the spatial domain. The self-attention mechanism of the transformer enables transformers to…

Image and Video Processing · Electrical Eng. & Systems 2023-08-09 Rahul G. S. , Sriprabha Ramnarayanan , Mohammad Al Fahim , Keerthi Ram , Preejith S. P , Mohanasankar Sivaprakasam

We introduce a multi-scale Image Super Resolution (ISR) method building on recent advances in Visual Auto-Regressive (VAR) modeling. VAR models break image tokenization into additive, gradually increasing scales, using Residual Quantization…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Isma Hadji , Enrique Sanchez , Adrian Bulat , Brais Martinez , Georgios Tzimiropoulos

Transformers have recently demonstrated strong performance in computer vision, with Vision Transformers (ViTs) leveraging self-attention to capture both low-level and high-level image features. However, standard ViTs remain computationally…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Ali El Bellaj , Mohammed-Amine Cheddadi , Rhassan Berber

Hyperspectral image has become increasingly crucial due to its abundant spectral information. However, It has poor spatial resolution with the limitation of the current imaging mechanism. Nowadays, many convolutional neural networks have…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Jin-Fan Hu , Ting-Zhu Huang , Liang-Jian Deng

Transformer-based methods have achieved impressive image restoration performance due to their capacities to model long-range dependency compared to CNN-based methods. However, advances like SwinIR adopts the window-based and local attention…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Dafeng Zhang , Feiyu Huang , Shizhuo Liu , Xiaobing Wang , Zhezhu Jin

Due to its deficiency in prior knowledge (inductive bias), Vision Transformer (ViT) requires pre-training on large-scale datasets to perform well. Moreover, the growing layers and parameters in ViT models impede their applicability to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Chenhao Xu , Chang-Tsun Li , Chee Peng Lim , Douglas Creighton

Transformers have revolutionized computer vision and natural language processing, but their high computational complexity limits their application in high-resolution image processing and long-context analysis. This paper introduces…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Yuchen Duan , Weiyun Wang , Zhe Chen , Xizhou Zhu , Lewei Lu , Tong Lu , Yu Qiao , Hongsheng Li , Jifeng Dai , Wenhai Wang

Hierarchical structures are popular in recent vision transformers, however, they require sophisticated designs and massive datasets to work well. In this paper, we explore the idea of nesting basic local transformers on non-overlapping…

Computer Vision and Pattern Recognition · Computer Science 2022-01-03 Zizhao Zhang , Han Zhang , Long Zhao , Ting Chen , Sercan O. Arik , Tomas Pfister

It is well believed that Transformer performs better in semantic segmentation compared to convolutional neural networks. Nevertheless, the original Vision Transformer may lack of inductive biases of local neighborhoods and possess a high…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Wentao Shi , Jing Xu , Pan Gao

Video super-resolution (VSR) is the task of restoring high-resolution frames from a sequence of low-resolution inputs. Different from single image super-resolution, VSR can utilize frames' temporal information to reconstruct results with…

Image and Video Processing · Electrical Eng. & Systems 2022-08-25 Wenyi Lian , Wenjing Lian

With the popularity of Transformer architectures in computer vision, the research focus has shifted towards developing computationally efficient designs. Window-based local attention is one of the major techniques being adopted in recent…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Ammarah Farooq , Muhammad Awais , Sara Ahmed , Josef Kittler

Recent transformer-based super-resolution (SR) methods have achieved promising results against conventional CNN-based methods. However, these approaches suffer from essential shortsightedness created by only utilizing the standard…

Computer Vision and Pattern Recognition · Computer Science 2022-10-21 Jinsu Yoo , Taehoon Kim , Sihaeng Lee , Seung Hwan Kim , Honglak Lee , Tae Hyun Kim