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A new modification of the minimum-contrast estimator (the weighted MCE) of drift parameter in a linear stochastic evolution equation with additive fractional noise is introduced in the setting of the spectral approach (Fourier coordinates…

Probability · Mathematics 2019-09-30 Pavel Kriz

The advent of Deep Neural Networks (DNNs) has driven remarkable progress in low-light image enhancement (LLIE), with diverse architectures (e.g., CNNs and Transformers) and color spaces (e.g., sRGB, HSV, HVI) yielding impressive results.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Kangbiao Shi , Yixu Feng , Tao Hu , Yu Cao , Peng Wu , Yijin Liang , Yanning Zhang , Qingsen Yan

Images captured from low-light scenes often suffer from severe degradations, including low visibility, color cast and intensive noises, etc. These factors not only affect image qualities, but also degrade the performance of downstream…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Risheng Liu , Long Ma , Tengyu Ma , Xin Fan , Zhongxuan Luo

Raw low light image enhancement (LLIE) has achieved much better performance than the sRGB domain enhancement methods due to the merits of raw data. However, the ambiguity between noisy to clean and raw to sRGB mappings may mislead the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Qirui Yang , Qihua Cheng , Huanjing Yue , Le Zhang , Yihao Liu , Jingyu Yang

Certain datasets contain a limited number of samples with highly various styles and complex structures. This study presents a novel adversarial Lagrangian integrated contrastive embedding (ALICE) method for small-sized datasets. First, the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Amin Jalali , Minho Lee

Previous raw image-based low-light image enhancement methods predominantly relied on feed-forward neural networks to learn deterministic mappings from low-light to normally-exposed images. However, they failed to capture critical…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Yufei Wang , Yi Yu , Wenhan Yang , Lanqing Guo , Lap-Pui Chau , Alex C. Kot , Bihan Wen

Diffusion autoencoders (DAEs) are typically formulated as a noise prediction model and trained with a linear-$\beta$ noise schedule that spends much of its sampling steps at high noise levels. Because high noise levels are associated with…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Pramook Khungurn , Sukit Seripanitkarn , Phonphrm Thawatdamrongkit , Supasorn Suwajanakorn

In one-class novelty detection, a model learns solely on the in-class data to single out out-class instances. Autoencoder (AE) variants aim to compactly model the in-class data to reconstruct it exclusively, thus differentiating the…

Machine Learning · Computer Science 2022-07-25 Jaewoo Park , Yoon Gyo Jung , Andrew Beng Jin Teoh

The data-driven method for infrared small target detection (IRSTD) has achieved promising results. However, due to the small scale of infrared small target datasets and the limited number of pixels occupied by the targets themselves, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Peichao Wang , Jiabao Wang , Yao Chen , Rui Zhang , Yang Li , Zhuang Miao

This study presents Latent Diffusion Autoencoder (LDAE), a novel encoder-decoder diffusion-based framework for efficient and meaningful unsupervised learning in medical imaging, focusing on Alzheimer disease (AD) using brain MR from the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-12 Gabriele Lozupone , Alessandro Bria , Francesco Fontanella , Frederick J. A. Meijer , Claudio De Stefano , Henkjan Huisman

Deep learning-based image enhancement methods show significant advantages in reducing noise and improving visibility in low-light conditions. These methods are typically based on one-to-one mapping, where the model learns a direct…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Miao Zhang , Jun Yin , Pengyu Zeng , Yiqing Shen , Shuai Lu , Xueqian Wang

With large numbers of transients discovered by current and future imaging surveys, machine learning is increasingly applied to light curve and host galaxy properties to select events for follow-up. However, finding rare types of transients…

Instrumentation and Methods for Astrophysics · Physics 2025-12-17 Xinyue Sheng , Tuan Dung Pham , Zichi Zhang , Matt Nicholl , Thai Son Mai

This paper proposes a new framework for low-light image enhancement by simultaneously conducting the appearance as well as structure modeling. It employs the structural feature to guide the appearance enhancement, leading to sharp and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Xiaogang Xu , Ruixing Wang , Jiangbo Lu

Limited-Angle Computed Tomography (LACT) is a non-destructive evaluation technique used in a variety of applications ranging from security to medicine. The limited angle coverage in LACT is often a dominant source of severe artifacts in the…

Image and Video Processing · Electrical Eng. & Systems 2022-11-23 Jiaming Liu , Rushil Anirudh , Jayaraman J. Thiagarajan , Stewart He , K. Aditya Mohan , Ulugbek S. Kamilov , Hyojin Kim

Low-light video enhancement (LLVE) is challenging due to noise, low contrast, and color degradation. While learning-based methods enable fast inference, they often fail under heavy real-world noise because they do not sufficiently exploit…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Ruirui Lin , Guoxi Huang , Nantheera Anantrasirichai

In low-light environments like nighttime driving, image degradation severely challenges in-vehicle camera safety. Since existing enhancement algorithms are often too computationally intensive for vehicular applications, we propose…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yuhan Chen , Yicui Shi , Guofa Li , Guangrui Bai , Jinyuan Shao , Xiangfei Huang , Wenbo Chu , Keqiang Li

Advances in latent diffusion models (LDMs) have revolutionized high-resolution image generation, but the design space of the autoencoder that is central to these systems remains underexplored. In this paper, we introduce LiteVAE, a new…

Machine Learning · Computer Science 2025-01-22 Seyedmorteza Sadat , Jakob Buhmann , Derek Bradley , Otmar Hilliges , Romann M. Weber

In this paper, we explore adaptive offloading and enhancement strategies for video analytics tasks on computing-constrained mobile devices in low-light conditions. We observe that the accuracy of low-light video analytics varies from…

Multimedia · Computer Science 2024-09-10 Yuanyi He , Peng Yang , Tian Qin , Jiawei Hou , Ning Zhang

We present TALE, a novel training-free framework harnessing the generative capabilities of text-to-image diffusion models to address the cross-domain image composition task that focuses on flawlessly incorporating user-specified objects…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 Kien T. Pham , Jingye Chen , Qifeng Chen

Low-light image enhancement is challenging in that it needs to consider not only brightness recovery but also complex issues like color distortion and noise, which usually hide in the dark. Simply adjusting the brightness of a low-light…

Image and Video Processing · Electrical Eng. & Systems 2020-03-17 Feifan Lv , Yu Li , Feng Lu