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Light plays an important role in human well-being. However, most computer vision tasks treat pixels without considering their relationship to physical luminance. To address this shortcoming, we introduce the Laval Photometric Indoor HDR…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Christophe Bolduc , Justine Giroux , Marc Hébert , Claude Demers , Jean-François Lalonde

The extremes of lighting (e.g. too much or too little light) usually cause many troubles for machine and human vision. Many recent works have mainly focused on under-exposure cases where images are often captured in low-light conditions…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Hue Nguyen , Diep Tran , Khoi Nguyen , Rang Nguyen

Currently, mobile and IoT devices are in dire need of a series of methods to enhance 4K images with limited resource expenditure. The absence of large-scale 4K benchmark datasets hampers progress in this area, especially for dehazing. The…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Zhuoran Zheng , Xiuyi Jia

CNNs are now prevalent as the primary choice for most machine vision problems due to their superior rate of classification and the availability of user-friendly libraries. These networks effortlessly identify and select features in a…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Sai Teja Erukude

We address the problem of decomposing a single image into reflectance and shading. The difficulty comes from the fact that the components of image---the surface albedo, the direct illumination, and the ambient illumination---are coupled…

Computer Vision and Pattern Recognition · Computer Science 2018-10-24 Yuanliu Liu , Ang Li , Zejian Yuan , Badong Chen , Nanning Zheng

Recent conditional image synthesis approaches provide high-quality synthesized images. However, it is still challenging to accurately adjust image contents such as the positions and orientations of objects, and synthesized images often have…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Jaebong Jeong , Janghun Jo , Jingdong Wang , Sunghyun Cho , Jaesik Park

Image harmonization is an important preprocessing strategy to address domain shifts arising from data acquired using different machines and scanning protocols in medical imaging. However, benchmarking the effectiveness of harmonization…

Image and Video Processing · Electrical Eng. & Systems 2024-08-28 Abhijeet Parida , Zhifan Jiang , Roger J. Packer , Robert A. Avery , Syed M. Anwar , Marius G. Linguraru

Computational color constancy has the important task of reducing the influence of the scene illumination on the object colors. As such, it is an essential part of the image processing pipelines of most digital cameras. One of the important…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Egor Ershov , Alex Savchik , Illya Semenkov , Nikola Banić , Alexander Belokopytov , Daria Senshina , Karlo Koscević , Marko Subašić , Sven Lončarić

Image matting is a key technique for image and video editing and composition. Conventionally, deep learning approaches take the whole input image and an associated trimap to infer the alpha matte using convolutional neural networks. Such…

Computer Vision and Pattern Recognition · Computer Science 2021-01-18 Haichao Yu , Ning Xu , Zilong Huang , Yuqian Zhou , Humphrey Shi

Image matting is a long-standing problem in computer graphics and vision, mostly identified as the accurate estimation of the foreground in input images. We argue that the foreground objects can be represented by different-level…

Computer Vision and Pattern Recognition · Computer Science 2021-03-04 Yu Qiao , Yuhao Liu , Qiang Zhu , Xin Yang , Yuxin Wang , Qiang Zhang , Xiaopeng Wei

As latent diffusion models (LDMs) democratize image generation capabilities, there is a growing need to detect fake images. A good detector should focus on the generative models fingerprints while ignoring image properties such as semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Anirudh Sundara Rajan , Utkarsh Ojha , Jedidiah Schloesser , Yong Jae Lee

In MRI, variations in scan parameters, sequence, or hardware can lead to discrepancies in image appearance, even for the same subject. These inconsistencies, known as domain shifts, can hinder image analysis and degrade the performance of…

Image and Video Processing · Electrical Eng. & Systems 2026-05-05 Minjun Kim , Dong Ju Mun , Hwihun Jeong , Hangyeol Park , Haechang Lee , Se Young Chun , Jongho Lee

This paper provides an efficient training-free painterly image harmonization (PIH) method, dubbed FreePIH, that leverages only a pre-trained diffusion model to achieve state-of-the-art harmonization results. Unlike existing methods that…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Ruibin Li , Jingcai Guo , Song Guo , Qihua Zhou , Jie Zhang

Images captured in low-light environment often suffer from complex degradation. Simply adjusting light would inevitably result in burst of hidden noise and color distortion. To seek results with satisfied lighting, cleanliness, and realism…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Qiming Hu , Xiaojie Guo

Image matting and image harmonization are two important tasks in image composition. Image matting, aiming to achieve foreground boundary details, and image harmonization, aiming to make the background compatible with the foreground, are…

Computer Vision and Pattern Recognition · Computer Science 2021-08-16 Xuqian Ren , Yifan Liu , Chunlei Song

Image colorization aims to bring colors back to grayscale images. Automatic image colorization methods, which requires no additional guidance, struggle to generate high-quality images due to color ambiguity, and provides limited user…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Yifan Li , Shuai Yang , Jiaying Liu

This paper investigates into the colorization problem which converts a grayscale image to a colorful version. This is a very difficult problem and normally requires manual adjustment to achieve artifact-free quality. For instance, it…

Computer Vision and Pattern Recognition · Computer Science 2016-05-03 Zezhou Cheng , Qingxiong Yang , Bin Sheng

Extracting accurate foregrounds from natural images benefits many downstream applications such as film production and augmented reality. However, the furry characteristics and various appearance of the foregrounds, e.g., animal and…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 Jizhizi Li , Jing Zhang , Stephen J. Maybank , Dacheng Tao

Deep networks have shown impressive performance in the image restoration tasks, such as image colorization. However, we find that previous approaches rely on the digital representation from single color model with a specific mapping…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Xiangcheng Du , Zhao Zhou , Yanlong Wang , Zhuoyao Wang , Yingbin Zheng , Cheng Jin

Image fusion seeks to seamlessly integrate foreground objects with background scenes, producing realistic and harmonious fused images. Unlike existing methods that directly insert objects into the background, adaptive and interactive fusion…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Junjia Huang , Pengxiang Yan , Jiyang Liu , Jie Wu , Zhao Wang , Yitong Wang , Liang Lin , Guanbin Li