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Auto white balance (AWB) is applied by camera hardware at capture time to remove the color cast caused by the scene illumination. The vast majority of white-balance algorithms assume a single light source illuminates the scene; however,…

计算机视觉与模式识别 · 计算机科学 2021-10-11 Mahmoud Afifi , Marcus A. Brubaker , Michael S. Brown

White balance (WB) algorithms in many commercial cameras assume single and uniform illumination, leading to undesirable results when multiple lighting sources with different chromaticities exist in the scene. Prior research on…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Dongyoung Kim , Jinwoo Kim , Junsang Yu , Seon Joo Kim

Auto-white balance (AWB) correction is a critical operation in image signal processors for accurate and consistent color correction across various illumination scenarios. This paper presents a novel and efficient AWB correction method that…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Furkan Kınlı , Doğa Yılmaz , Barış Özcan , Furkan Kıraç

The image signal processor (ISP) pipeline in modern cameras consists of several modules that transform raw sensor data into visually pleasing images in a display color space. Among these, the auto white balance (AWB) module is essential for…

计算机视觉与模式识别 · 计算机科学 2025-08-18 Luxi Zhao , Mahmoud Afifi , Michael S. Brown

White balance (WB) correction in scenes with multiple illuminants remains a persistent challenge in computer vision. Recent methods explored fusion-based approaches, where a neural network linearly blends multiple sRGB versions of an input…

计算机视觉与模式识别 · 计算机科学 2025-03-20 David Serrano-Lozano , Aditya Arora , Luis Herranz , Konstantinos G. Derpanis , Michael S. Brown , Javier Vazquez-Corral

Cameras rely on auto white balance (AWB) to correct undesirable color casts caused by scene illumination and the camera's spectral sensitivity. This is typically achieved using an illuminant estimator that determines the global color cast…

计算机视觉与模式识别 · 计算机科学 2025-06-26 Mahmoud Afifi , Luxi Zhao , Abhijith Punnappurath , Mohammed A. Abdelsalam , Ran Zhang , Michael S. Brown

White balance (WB) is a key step in the image signal processor (ISP) pipeline that mitigates color casts caused by varying illumination and restores the scene's true colors. Currently, sRGB-based WB editing for post-ISP WB correction is…

计算机视觉与模式识别 · 计算机科学 2025-12-12 Yang Cheng , Ziteng Cui , Shenghan Su , Lin Gu , Zenghui Zhang

Nighttime color constancy still remains a challenging problem in computational photography due to low-light noise and complex illumination conditions. We present RL-AWB, a novel framework combining statistical methods with deep…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Yuan-Kang Lee , Kuan-Lin Chen , Chia-Che Chang , Yu-Lun Liu

White balance (WB) is one of the first photo-finishing steps used to render a captured image to its final output. WB is applied to remove the color cast caused by the scene's illumination. Interactive photo-editing software allows users to…

计算机视觉与模式识别 · 计算机科学 2020-09-29 Mahmoud Afifi , Michael S. Brown

In this paper, we propose a novel template matching method with a white balancing adjustment, called N-white balancing, which was proposed for multi-illuminant scenes. To reduce the influence of lighting effects, N-white balancing is…

计算机视觉与模式识别 · 计算机科学 2022-08-04 Teruaki Akazawa , Yuma Kinoshita , Hitoshi Kiya

In this paper, we propose a novel multi-color balance method for reducing color distortions caused by lighting effects. The proposed method allows us to adjust three target-colors chosen by a user in an input image so that each target color…

多媒体 · 计算机科学 2021-05-24 Teruaki Akazawa , Yuma Kinoshita , Hitoshi Kiya

In recent years, single image dehazing deep models based on Atmospheric Scattering Model (ASM) have achieved remarkable results. But the dehazing outputs of those models suffer from color shift. Analyzing the ASM model shows that the…

计算机视觉与模式识别 · 计算机科学 2021-01-22 Cong Wang , Yan Huang , Yuexian Zou , Yong Xu

Automatic white balancing (AWB), one of the first steps in an integrated signal processing (ISP) pipeline, aims to correct the color cast induced by the scene illuminant. An incorrect white balance (WB) setting or AWB failure can lead to an…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Sai Kumar Reddy Manne , Michael Wan

Traditional auto white balance (AWB) algorithms typically assume a single global illuminant source, which leads to color distortions in multi-illuminant scenes. While recent neural network-based methods have shown excellent accuracy in such…

图像与视频处理 · 电气工程与系统科学 2025-02-07 Wenjun Wei , Yanlin Qian , Huaian Chen , Junkang Dai , Yi Jin

In a surround view system, the image color and tone captured by multiple cameras can be different due to cameras applying auto white balance (AWB), global tone mapping (GTM) individually for each camera. The color and brightness along…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Yuzhuo Ren , Yining Deng , David Pajak , Robin Jenkin , Niranjan Avadhanam , Varsha Hedau

In this paper, we propose a novel white balance adjustment, called "spatially varying white balancing," for single, mixed, and non-uniform illuminants. By using n diagonal matrices along with a weight, the proposed method can reduce…

计算机视觉与模式识别 · 计算机科学 2021-09-06 Teruaki Akazawa , Yuma Kinoshita , Hitoshi Kiya

This thesis presents methods and approaches to image color correction, color enhancement, and color editing. To begin, we study the color correction problem from the standpoint of the camera's image signal processor (ISP). A camera's ISP is…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Mahmoud Afifi

Advances in high dynamic range (HDR) lighting estimation from a single image have opened new possibilities for augmented reality (AR) applications. Predicting complex lighting environments from a single input image allows for the realistic…

计算机视觉与模式识别 · 计算机科学 2025-09-24 Zitian Zhang , Joshua Urban Davis , Jeanne Phuong Anh Vu , Jiangtao Kuang , Jean-François Lalonde

Machine learning models trained on imbalanced datasets often exhibit intersectional biases-systematic errors arising from the interaction of multiple attributes such as object class and environmental conditions. This paper presents a…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Farjana Yesmin

We present a method to estimate the direction and color of the scene light source from a single image. Our method is based on two main ideas: (a) we use a new synthetic dataset with strong shadow effects with similar constraints to the SID…

计算机视觉与模式识别 · 计算机科学 2020-09-21 Hassan A. Sial , Ramon Baldrich , Maria Vanrell , Dimitris Samaras
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