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Removing shadows requires an understanding of both lighting conditions and object textures in a scene. Existing methods typically learn pixel-level color mappings between shadow and non-shadow images, in which the joint modeling of lighting…

计算机视觉与模式识别 · 计算机科学 2024-02-02 Yuhao Liu , Zhanghan Ke , Ke Xu , Fang Liu , Zhenwei Wang , Rynson W. H. Lau

With a wide range of shadows in many collected images, shadow removal has aroused increasing attention since uncontaminated images are of vital importance for many downstream multimedia tasks. Current methods consider the same convolution…

计算机视觉与模式识别 · 计算机科学 2022-08-31 Yimin Xu , Mingbao Lin , Hong Yang , Fei Chao , Rongrong Ji

High dynamic range (HDR) imaging is an important task in image processing that aims to generate well-exposed images in scenes with varying illumination. Although existing multi-exposure fusion methods have achieved impressive results,…

计算机视觉与模式识别 · 计算机科学 2023-05-30 Jun Xiao , Qian Ye , Tianshan Liu , Cong Zhang , Kin-Man Lam

A low-resolution digital surface model (DSM) features distinctive attributes impacted by noise, sensor limitations and data acquisition conditions, which failed to be replicated using simple interpolation methods like bicubic. This causes…

图像与视频处理 · 电气工程与系统科学 2024-04-08 Daniel Panangian , Ksenia Bittner

Image hallucination and super-resolution have been studied for decades, and many approaches have been proposed to upsample low-resolution images using information from the images themselves, multiple example images, or large image…

计算机视觉与模式识别 · 计算机科学 2018-06-05 Chieh-Chi Kao , Yuxiang Wang , Jonathan Waltman , Pradeep Sen

Deep neural networks (DNNs) have made remarkable strides in various computer vision tasks, including image classification, segmentation, and object detection. However, recent research has revealed a vulnerability in advanced DNNs when faced…

计算机视觉与模式识别 · 计算机科学 2023-05-24 Chengyin Hu , Weiwen Shi , Chao Li , Jialiang Sun , Donghua Wang , Junqi Wu , Guijian Tang

Existing research based on deep learning has extensively explored the problem of daytime image dehazing. However, few studies have considered the characteristics of nighttime hazy scenes. There are two distinctions between nighttime and…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Xiaofeng Cong , Jie Gui , Jing Zhang , Junming Hou , Hao Shen

Super Resolution is the problem of recovering a high-resolution image from a single or multiple low-resolution images of the same scene. It is an ill-posed problem since high frequency visual details of the scene are completely lost in…

图像与视频处理 · 电气工程与系统科学 2020-04-22 Hamid Reza Vaezi Joze , Ilya Zharkov , Karlton Powell , Carl Ringler , Luming Liang , Andy Roulston , Moshe Lutz , Vivek Pradeep

Regular cameras and cell phones are able to capture limited luminosity. Thus, in terms of quality, most of the produced images from such devices are not similar to the real world. They are overly dark or too bright, and the details are not…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Ali Reza Omrani , Davide Moroni

High dynamic range (HDR) images capture much more intensity levels than standard ones. Current methods predominantly generate HDR images from 8-bit low dynamic range (LDR) sRGB images that have been degraded by the camera processing…

图像与视频处理 · 电气工程与系统科学 2023-09-06 Yunhao Zou , Chenggang Yan , Ying Fu

Image deraining is a fundamental, yet not well-solved problem in computer vision and graphics. The traditional image deraining approaches commonly behave ineffectively in medium and heavy rain removal, while the learning-based ones lead to…

图像与视频处理 · 电气工程与系统科学 2019-08-29 Sen Deng , Mingqiang Wei , Jun Wang , Luming Liang , Haoran Xie , Meng Wang

This paper describes the COCO-Text dataset. In recent years large-scale datasets like SUN and Imagenet drove the advancement of scene understanding and object recognition. The goal of COCO-Text is to advance state-of-the-art in text…

计算机视觉与模式识别 · 计算机科学 2016-06-21 Andreas Veit , Tomas Matera , Lukas Neumann , Jiri Matas , Serge Belongie

Most existing super-resolution methods and datasets have been developed to improve the image quality in well-lighted conditions. However, these methods do not work well in real-world low-light conditions as the images captured in such…

计算机视觉与模式识别 · 计算机科学 2024-10-18 Yang Liu , Yaofang Liu , Jinshan Pan , Yuxiang Hui , Fan Jia , Raymond H. Chan , Tieyong Zeng

This project aims to adopt preprocessing operations to get less distortions for shadow image enlargement. The preprocessing operations consists of three main steps: first enlarge the original shadow image by using any kind of interpolation…

计算机视觉与模式识别 · 计算机科学 2021-02-24 Raid R. Al-Nima , Ali N. Hamoodi , Radhwan Y. Al-Jawadi , Ziad S. Mohammad

Shadows are essential for realistic image compositing. Physics-based shadow rendering methods require 3D geometries, which are not always available. Deep learning-based shadow synthesis methods learn a mapping from the light information to…

计算机视觉与模式识别 · 计算机科学 2022-07-18 Yichen Sheng , Yifan Liu , Jianming Zhang , Wei Yin , A. Cengiz Oztireli , He Zhang , Zhe Lin , Eli Shechtman , Bedrich Benes

Low-light photography produces images with low signal-to-noise ratios due to limited photons. In such conditions, common approximations like the Gaussian noise model fall short, and many denoising techniques fail to remove noise…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Liying Lu , Raphaël Achddou , Sabine Süsstrunk

Instance shadow detection is the task of detecting pairs of shadows and objects, where existing methods first detect shadows and objects independently, then associate them. This paper introduces FastInstShadow, a method that enhances…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Takeru Inoue , Ryusuke Miyamoto

Aerial videos taken by a drone not too far above the surface may contain the drone's shadow projected on the scene. This deteriorates the aesthetic quality of videos. With the presence of other shadows, shadow removal cannot be directly…

计算机视觉与模式识别 · 计算机科学 2019-05-21 Xiaoyan Zou , Ruofan Zhou , Majed El Helou , Sabine Süsstrunk

Large sky surveys are increasingly relying on image subtraction pipelines for real-time (and archival) transient detection. In this process one has to contend with varying PSF, small brightness variations in many sources, as well as…

天体物理仪器与方法 · 物理学 2018-04-25 Nima Sedaghat , Ashish Mahabal

Image composition is an important operation in image processing, but the inconsistency between foreground and background significantly degrades the quality of composite image. Image harmonization, aiming to make the foreground compatible…

计算机视觉与模式识别 · 计算机科学 2020-11-03 Wenyan Cong , Jianfu Zhang , Li Niu , Liu Liu , Zhixin Ling , Weiyuan Li , Liqing Zhang