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相关论文: FDG-Diff: Frequency-Domain-Guided Diffusion Framew…

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Real-image super-resolution (Real-ISR) seeks to recover HR images from LR inputs with mixed, unknown degradations. While diffusion models surpass GANs in perceptual quality, they under-reconstruct high-frequency (HF) details due to a…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Seungho Choi , Jeahun Sung , Jihyong Oh

Recently, the diffusion model has emerged as a superior generative model that can produce high quality and realistic images. However, for medical image translation, the existing diffusion models are deficient in accurately retaining…

图像与视频处理 · 电气工程与系统科学 2023-10-31 Yunxiang Li , Hua-Chieh Shao , Xiao Liang , Liyuan Chen , Ruiqi Li , Steve Jiang , Jing Wang , You Zhang

Image restoration aims to enhance low quality images, producing high quality images that exhibit natural visual characteristics and fine semantic attributes. Recently, the diffusion model has emerged as a powerful technique for image…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Jiangtong Tan , Feng Zhao

Pre-trained Latent Diffusion Models (LDMs) have recently shown strong perceptual priors for low-level vision tasks, making them a promising direction for multi-exposure High Dynamic Range (HDR) reconstruction. However, directly applying…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Tao Hu , Weiyu Zhou , Yanjie Tu , Peng Wu , Wei Dong , Qingsen Yan , Yanning Zhang

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

Capturing High Dynamic Range (HDR) scenery using 8-bit cameras often suffers from over-/underexposure, loss of fine details due to low bit-depth compression, skewed color distributions, and strong noise in dark areas. Traditional LDR image…

图像与视频处理 · 电气工程与系统科学 2024-06-14 Baiang Li , Sizhuo Ma , Yanhong Zeng , Xiaogang Xu , Youqing Fang , Zhao Zhang , Jian Wang , Kai Chen

In the Fourier domain, luminance information is primarily encoded in the amplitude spectrum, while spatial structures are captured in the phase components. The traditional Fourier Frequency information fitting employs pixel-wise loss…

计算机视觉与模式识别 · 计算机科学 2025-10-03 Yan Xingyang , Huang Xiaohong , Zhang Zhao , You Tian , Xu Ziheng

Recovering fine-grained details in extremely dark images remains challenging due to severe structural information loss and noise corruption. Existing enhancement methods often fail to preserve intricate details and sharp edges, limiting…

计算机视觉与模式识别 · 计算机科学 2025-08-06 Tongshun Zhang , Pingping Liu , Zixuan Zhong , Zijian Zhang , Qiuzhan Zhou

Nighttime image dehazing faces a more complex degradation pattern than its daytime counterpart, as haze scattering couples with low illumination, non-uniform lighting, and strong light interference. Under limited supervision, this…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Xining Ge , Weijun Yuan , Gengjia Chang , Xuyang Li , Shuhong Liu

Synthetic data provide low-cost, accurately annotated samples for geometry-sensitive vision tasks, but appearance and imaging differences between synthetic and real domains cause severe domain shift and degrade downstream performance.…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Chuanhai Zang , Jiabao Hu , XW Song

Monocular depth estimation (MDE) aims to infer per-pixel depth from a single RGB image. While diffusion models have advanced MDE with impressive generalization, they often exhibit limitations in accurately reconstructing far-range regions.…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Mingxia Zhan , Li Zhang , Yingjie Wang , Xiaomeng Chu , Beibei Wang , Yanyong Zhang

Real-world image dehazing is a fundamental yet challenging task in low-level vision. Existing learning-based methods often suffer from significant performance degradation when applied to complex real-world hazy scenes, primarily due to…

计算机视觉与模式识别 · 计算机科学 2026-01-06 Chen Zhu , Huiwen Zhang , Yujie Li , Mu He , Xiaotian Qiao

Blind face restoration (BFR) is fundamentally challenged by the extensive range of degradation types and degrees that impact model generalization. Recent advancements in diffusion models have made considerable progress in this field.…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Xinmin Qiu , Bonan Li , Zicheng Zhang , Congying Han , Tiande Guo

Image restoration is the task of recovering a clean image from a degraded version. In most cases, the degradation is spatially varying, and it requires the restoration network to both localize and restore the affected regions. In this…

图像与视频处理 · 电气工程与系统科学 2022-01-04 Maitreya Suin , Kuldeep Purohit , A. N. Rajagopalan

In the process of performing image super-resolution processing, the processing of complex localized information can have a significant impact on the quality of the image generated. Fractal features can capture the rich details of both micro…

计算机视觉与模式识别 · 计算机科学 2025-02-28 Lianping Yang , Peng Jiao , Jinshan Pan , Hegui Zhu , Su Guo

RGB-to-hyperspectral image reconstruction is a highly ill-posed inverse problem, since multiple plausible spectral distributions may correspond to the same RGB observation. Existing regression-based methods usually learn a deterministic…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Songyu Ding , Ronggiang Zhao , Mingchun Sun , Jie Liu

Single image super resolution aims to enhance image quality with respect to spatial content, which is a fundamental task in computer vision. In this work, we address the task of single frame super resolution with the presence of image…

计算机视觉与模式识别 · 计算机科学 2020-03-05 Xinyi Zhang , Hang Dong , Zhe Hu , Wei-Sheng Lai , Fei Wang , Ming-Hsuan Yang

Relying on the representation power of neural networks, most recent works have often neglected several factors involved in haze degradation, such as transmission (the amount of light reaching an observer from a scene over distance) and…

计算机视觉与模式识别 · 计算机科学 2024-12-06 Eun Woo Im , Junsung Shin , Sungyong Baik , Tae Hyun Kim

Dynamic Facial Expression Recognition (DFER) plays a critical role in affective computing and human-computer interaction. Although existing methods achieve comparable performance, they inevitably suffer from performance degradation under…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Feng-Qi Cui , Anyang Tong , Jinyang Huang , Jie Zhang , Dan Guo , Zhi Liu , Meng Wang

In recent years, deep learning-based image compression, particularly through generative models, has emerged as a pivotal area of research. Despite significant advancements, challenges such as diminished sharpness and quality in…

图像与视频处理 · 电气工程与系统科学 2024-09-18 Ryugo Morita , Hitoshi Nishimura , Ko Watanabe , Andreas Dengel , Jinjia Zhou