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Haze and fog reduce the visibility of outdoor scenes as a veil like semi-transparent layer appears over the objects. As a result, images captured under such conditions lack contrast. Image dehazing methods try to alleviate this problem by…

计算机视觉与模式识别 · 计算机科学 2018-11-28 Shirsendu Sukanta Halder , Sanchayan Santra , Bhabatosh Chanda

Haze severely degrades the visual quality of remote sensing images and hampers the performance of road extraction, vehicle detection, and traffic flow monitoring. The emerging denoising diffusion probabilistic model (DDPM) exhibits the…

计算机视觉与模式识别 · 计算机科学 2024-11-18 Jiamei Xiong , Xuefeng Yan , Yongzhen Wang , Wei Zhao , Xiao-Ping Zhang , Mingqiang Wei

By optimizing the rate-distortion-realism trade-off, generative image compression approaches produce detailed, realistic images instead of the only sharp-looking reconstructions produced by rate-distortion-optimized models. In this paper,…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Lingyu Zhu , Xiangrui Zeng , Bolin Chen , Peilin Chen , Yung-Hui Li , Shiqi Wang

Recent approaches using large-scale pretrained diffusion models for image dehazing improve perceptual quality but often suffer from hallucination issues, producing unfaithful dehazed image to the original one. To mitigate this, we propose…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Tianwen Zhou , Jing Wang , Songtao Wu , Kuanhong Xu

Complex degradations like noise, blur, and low resolution are typical challenges in real world image fusion tasks, limiting the performance and practicality of existing methods. End to end neural network based approaches are generally…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Yu Shi , Yu Liu , Zhong-Cheng Wu , Juan Cheng , Huafeng Li , Xun Chen

Images with haze of different varieties often pose a significant challenge to dehazing. Therefore, guidance by estimates of haze parameters related to the variety would be beneficial, and their progressive update jointly with haze reduction…

计算机视觉与模式识别 · 计算机科学 2024-10-30 Aupendu Kar , Sobhan Kanti Dhara , Debashis Sen , Prabir Kumar Biswas

Image restoration aims to recover high-quality images from degraded observations. When the degradation process is known, the recovery problem can be formulated as an inverse problem, and in a Bayesian context, the goal is to sample a clean…

图像与视频处理 · 电气工程与系统科学 2025-10-13 Darshan Thaker , Abhishek Goyal , René Vidal

Nighttime image dehazing remains a challenging low-level vision problem due to the joint presence of haze, glow, non-uniform illumination, color distortion, and sensor noise, which often invalidate assumptions commonly used in daytime…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Mohammad Heydari , Wei Dong , Shahram Shirani , Jun Chen , Han Zhou

Current deep dehazing methods only focus on removing haze from hazy images, lacking the capability to translate between hazy and haze-free images. To address this issue, we propose a residual-based efficient bidirectional diffusion model…

计算机视觉与模式识别 · 计算机科学 2025-08-18 Bing Liu , Le Wang , Hao Liu , Mingming Liu

Incorporating diffusion models in the image compression domain has the potential to produce realistic and detailed reconstructions, especially at extremely low bitrates. Previous methods focus on using diffusion models as expressive…

图像与视频处理 · 电气工程与系统科学 2024-10-10 Lucas Relic , Roberto Azevedo , Markus Gross , Christopher Schroers

Existing dehazing methods deal with real-world haze images with difficulty, especially scenes with thick haze. One of the main reasons is the lack of real-world paired data and robust priors. To avoid the costly collection of paired hazy…

计算机视觉与模式识别 · 计算机科学 2025-08-18 Bing Liu , Le Wang , Mingming Liu , Hao Liu , Rui Yao , Yong Zhou , Peng Liu , Tongqiang Xia

Clear imaging under hazy conditions is a critical task. Prior-based and neural methods have improved results. However, they operate on RGB frames, which suffer from limited dynamic range. Therefore, dehazing remains ill-posed and can erase…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Ling Wang , Yunfan Lu , Wenzong Ma , Huizai Yao , Pengteng Li , Hui Xiong

Deep learning-based methods have made significant achievements for image dehazing. However, most of existing dehazing networks are concentrated on training models using simulated hazy images, resulting in generalization performance…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Tian Ye , Yun Liu , Yunchen Zhang , Sixiang Chen , Erkang Chen

Diffusion models have attained remarkable success in the domains of image generation and editing. It is widely recognized that employing larger inversion and denoising steps in diffusion model leads to improved image reconstruction quality.…

计算机视觉与模式识别 · 计算机科学 2024-01-05 Chen Hou , Guoqiang Wei , Zhibo Chen

With the great success of diffusion models in image generation, diffusion-based image compression is attracting increasing interests. However, due to the random noise introduced in the diffusion learning, they usually produce…

图像与视频处理 · 电气工程与系统科学 2026-04-09 Zhenyu Du , Yanbo Gao , Shuai Li , Yiyang Li , Hui Yuan , Mao Ye

Transformers offer strong global modeling for single-image dehazing but come with high computational costs. Most methods rely on spatial features to capture long-range dependencies, making them less effective under complex haze conditions.…

计算机视觉与模式识别 · 计算机科学 2026-02-17 Lirong Zheng , Yanshan Li , Rui Yu , Kaihao Zhang

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

A flexible discriminative image denoiser is introduced in which multi-task learning methods are applied to a densoising FCN based on U-Net. The activations of the U-Net model are modified by affine transforms that are a learned function of…

图像与视频处理 · 电气工程与系统科学 2020-11-26 Anthony Kelly

We present a novel generative modeling framework,Wavelet-Fourier-Diffusion, which adapts the diffusion paradigm to hybrid frequency representations in order to synthesize high-quality, high-fidelity images with improved spatial…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Andrew Kiruluta , Andreas Lemos

The formulation of the hazy image is mainly dominated by the reflected lights and ambient airlight. Existing dehazing methods often ignore the depth cues and fail in distant areas where heavier haze disturbs the visibility. However, we note…

计算机视觉与模式识别 · 计算机科学 2021-02-23 Yudong Liang , Bin Wang , Jiaying Liu , Deyu Li , Sanping Zhou , Wenqi Ren