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Photo enhancement plays a crucial role in augmenting the visual aesthetics of a photograph. In recent years, photo enhancement methods have either focused on enhancement performance, producing powerful models that cannot be deployed on edge…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Feng Zhang , Haoyou Deng , Zhiqiang Li , Lida Li , Bin Xu , Qingbo Lu , Zisheng Cao , Minchen Wei , Changxin Gao , Nong Sang , Xiang Bai

Challenging illumination conditions (low-light, under-exposure and over-exposure) in the real world not only cast an unpleasant visual appearance but also taint the computer vision tasks. After camera captures the raw-RGB data, it renders…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Ziteng Cui , Kunchang Li , Lin Gu , Shenghan Su , Peng Gao , Zhengkai Jiang , Yu Qiao , Tatsuya Harada

The dominant image-to-image translation methods are based on fully convolutional networks, which extract and translate an image's features and then reconstruct the image. However, they have unacceptable computational costs when working with…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Yuda Song , Hui Qian , Xin Du

Light field (LF) images containing information for multiple views have numerous applications, which can be severely affected by low-light imaging. Recent learning-based methods for low-light enhancement have some disadvantages, such as a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Shansi Zhang , Nan Meng , Edmund Y. Lam

Recent years have witnessed the increasing popularity of learning based methods to enhance the color and tone of photos. However, many existing photo enhancement methods either deliver unsatisfactory results or consume too much…

Image and Video Processing · Electrical Eng. & Systems 2020-10-01 Hui Zeng , Jianrui Cai , Lida Li , Zisheng Cao , Lei Zhang

In this paper, we described and developed a framework for Multilayer Perceptron (MLP) to work on low level image processing, where MLP will be used to perform image super-resolution. Meanwhile, MLP are trained with different types of images…

Computer Vision and Pattern Recognition · Computer Science 2012-12-24 Kah Keong Chua , Yong Haur Tay

Convolutional Neural Networks (CNNs) have achieved impressive results across many super-resolution (SR) and image restoration tasks. While many such networks can upscale low-resolution (LR) images using just the raw pixel-level information,…

Image and Video Processing · Electrical Eng. & Systems 2021-10-29 Matthew Aquilina , Christian Galea , John Abela , Kenneth P. Camilleri , Reuben A. Farrugia

This paper proposes a new light-weight convolutional neural network (5k parameters) for non-uniform illumination image enhancement to handle color, exposure, contrast, noise and artifacts, etc., simultaneously and effectively. More…

Computer Vision and Pattern Recognition · Computer Science 2020-06-02 Feifan Lv , Bo Liu , Feng Lu

Methods based on convolutional neural network (CNN) have demonstrated tremendous improvements on single image super-resolution. However, the previous methods mainly restore images from one single area in the low resolution (LR) input, which…

Computer Vision and Pattern Recognition · Computer Science 2017-05-16 Xiaoyi Jia , Xiangmin Xu , Bolun Cai , Kailing Guo

We introduce a real-time, high-resolution background replacement technique which operates at 30fps in 4K resolution, and 60fps for HD on a modern GPU. Our technique is based on background matting, where an additional frame of the background…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Shanchuan Lin , Andrey Ryabtsev , Soumyadip Sengupta , Brian Curless , Steve Seitz , Ira Kemelmacher-Shlizerman

We introduce the first end-to-end learning-based solution to near-field Photometric Stereo (PS), where the light sources are close to the object of interest. This setup is especially useful for reconstructing large immobile objects. Our…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Daniel Lichy , Soumyadip Sengupta , David W. Jacobs

Low-light image enhancement aims to restore the visibility of images captured by visual sensors in dim environments by addressing their inherent signal degradations, such as luminance attenuation and structural corruption. Although numerous…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Yicui Shi , Yuhan Chen , Xiangfei Huang , Zhenguo Wang , Wenxuan Yu , Ying Fang

Accurate calibration of internal parameters is a crucial yet challenging prerequisite for 3D reconstruction using light field cameras. In this paper, we propose a linear fractional transformation(LFT) parameter $\alpha$ to decoupled the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-07 Zhong Chen , Changfeng Chen

Photo exposure correction is widely investigated, but fewer studies focus on correcting under- and over-exposed images simultaneously. Three issues remain open to handle and correct both under- and over-exposed images in a unified way.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Huu-Phu Do , Hao-Chien Hsueh , Tzu-Hao Chiang , Chi-Han Chen , Wen-Hsiao Peng , Ching-Chun Huang

Light field (LF) image super-resolution (SR) aims at reconstructing high-resolution LF images from their low-resolution counterparts. Although CNN-based methods have achieved remarkable performance in LF image SR, these methods cannot fully…

Computer Vision and Pattern Recognition · Computer Science 2022-01-31 Zhengyu Liang , Yingqian Wang , Longguang Wang , Jungang Yang , Shilin Zhou

Photo retouching aims at enhancing the aesthetic visual quality of images that suffer from photographic defects such as over/under exposure, poor contrast, inharmonious saturation. Practically, photo retouching can be accomplished by a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-23 Jingwen He , Yihao Liu , Yu Qiao , Chao Dong

Photo retouching aims at improving the aesthetic visual quality of images that suffer from photographic defects, especially for poor contrast, over/under exposure, and inharmonious saturation. In practice, photo retouching can be…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Yihao Liu , Jingwen He , Xiangyu Chen , Zhengwen Zhang , Hengyuan Zhao , Chao Dong , Yu Qiao

In low-light environments like nighttime driving, image degradation severely challenges in-vehicle camera safety. Since existing enhancement algorithms are often too computationally intensive for vehicular applications, we propose…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yuhan Chen , Yicui Shi , Guofa Li , Guangrui Bai , Jinyuan Shao , Xiangfei Huang , Wenbo Chu , Keqiang Li

Recently, deep learning-based pan-sharpening algorithms have achieved notable advancements over traditional methods. However, deep learning-based methods incur substantial computational overhead during inference, especially with large…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Zhongnan Cai , Yingying Wang , Hui Zheng , Panwang Pan , ZiXu Lin , Ge Meng , Chenxin Li , Chunming He , Jiaxin Xie , Yunlong Lin , Junbin Lu , Yue Huang , Xinghao Ding

Deep image relighting allows photo enhancement by illumination-specific retouching without human effort and so it is getting much interest lately. Most of the existing popular methods available for relighting are run-time intensive and…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Sourya Dipta Das , Nisarg A. Shah , Saikat Dutta
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