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Video compression artifact reduction aims to recover high-quality videos from low-quality compressed videos. Most existing approaches use a single neighboring frame or a pair of neighboring frames (preceding and/or following the target…

Image and Video Processing · Electrical Eng. & Systems 2019-10-29 Yi Xu , Longwen Gao , Kai Tian , Shuigeng Zhou , Huyang Sun

Explicit reconstruction constraints derived from the decoupled representation are further imposed to suppress abnormal channel amplification and chromatic noise. Experiments on LOLv2-Real, MIT-Adobe FiveK, and LSRW show that the proposed…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Guangrui Bai , Yifan Mei , Yahui Deng , Yuhan Chen , Yuze Qiu , Wenhai Liu , Erbao Dong

Low-light image enhancement aims to improve an image's visibility while keeping its visual naturalness. Different from existing methods tending to accomplish the relighting task directly by ignoring the fidelity and naturalness recovery, we…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Kui Jiang , Zhongyuan Wang , Zheng Wang , Chen Chen , Peng Yi , Tao Lu , Chia-Wen Lin

Enhancing the quality of low-light images plays a very important role in many image processing and multimedia applications. In recent years, a variety of deep learning techniques have been developed to address this challenging task. A…

Image and Video Processing · Electrical Eng. & Systems 2021-12-13 Long Ma , Risheng Liu , Jiaao Zhang , Xin Fan , Zhongxuan Luo

Recently, deep neural networks have achieved excellent performance on low-light raw video enhancement. However, they often come with high computational complexity and large memory costs, which hinder their applications on resource-limited…

Computer Vision and Pattern Recognition · Computer Science 2024-04-01 Gengchen Zhang , Yulun Zhang , Xin Yuan , Ying Fu

Low-light image enhancement restores the colors and details of a single image and improves high-level visual tasks. However, restoring the lost details in the dark area is still a challenge relying only on the RGB domain. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Xiangchen Yin , Zhenda Yu , Xin Gao , Xiao Sun

Recent deep-learning-based video compression methods brought coding gains over conventional codecs such as AVC and HEVC. However, learning-based codecs generally require considerable computation time and model complexity. In this paper, we…

Image and Video Processing · Electrical Eng. & Systems 2023-03-22 Hochang Rhee , Seyun Kim , Nam Ik Cho

Self-supervised video denoising aims to remove noise from videos without relying on ground truth data, leveraging the video itself to recover clean frames. Existing methods often rely on simplistic feature stacking or apply optical flow…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Zikang Chen , Tao Jiang , Xiaowan Hu , Wang Zhang , Huaqiu Li , Haoqian Wang

Video autoencoders compress videos into compact latent representations for efficient reconstruction, playing a vital role in enhancing the quality and efficiency of video generation. However, existing video autoencoders often entangle…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Cuifeng Shen , Lumin Xu , Xingguo Zhu , Gengdai Liu

We propose Context-aware Video-text Alignment (CVA), a novel framework to address a significant challenge in video temporal grounding: achieving temporally sensitive video-text alignment that remains robust to irrelevant background context.…

Machine Learning · Computer Science 2026-03-27 Sungho Moon , Seunghun Lee , Jiwan Seo , Sunghoon Im

Low-light image enhancement is a challenging low-level computer vision task because after we enhance the brightness of the image, we have to deal with amplified noise, color distortion, detail loss, blurred edges, shadow blocks and halo…

Image and Video Processing · Electrical Eng. & Systems 2021-10-07 Xinxu Wei , Xianshi Zhang , Shisen Wang , Yanlin Huang , Yongjie Li

Existing video frame interpolation (VFI) methods often adopt a frame-centric approach, processing videos as independent short segments (e.g., triplets), which leads to temporal inconsistencies and motion artifacts. To overcome this, we…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Xinyu Peng , Han Li , Yuyang Huang , Ziyang Zheng , Yaoming Wang , Xin Chen , Wenrui Dai , Chenglin Li , Junni Zou , Hongkai Xiong

Transferring existing image-based detectors to the video is non-trivial since the quality of frames is always deteriorated by part occlusion, rare pose, and motion blur. Previous approaches exploit to propagate and aggregate features across…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Zhengkai Jiang , Yu Liu , Ceyuan Yang , Jihao Liu , Peng Gao , Qian Zhang , Shiming Xiang , Chunhong Pan

Low-light videos often exhibit spatiotemporally incoherent noise, compromising visibility and degrading performance in computer vision applications. A major challenge for enhancing such content using deep learning lies in the scarcity of…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Ruirui Lin , Guoxi Huang , Joanne Lin , Qi Sun , Alexandra Malyugina , David R Bull , Nantheera Anantrasirichai

The challenge in LLM-based video understanding lies in preserving visual and semantic information in long videos while maintaining a memory-affordable token count. However, redundancy and correspondence in videos have hindered the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Yudong Han , Qingpei Guo , Liyuan Pan , Liu Liu , Yu Guan , Ming Yang

Frame-based cameras with extended exposure times often produce perceptible visual blurring and information loss between frames, significantly degrading video quality. To address this challenge, we introduce EVDI++, a unified self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-09-11 Chi Zhang , Xiang Zhang , Chenxu Jiang , Gui-Song Xia , Lei Yu

This letter introduces LYT-Net, a novel lightweight transformer-based model for low-light image enhancement (LLIE). LYT-Net consists of several layers and detachable blocks, including our novel blocks--Channel-Wise Denoiser (CWD) and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-11 A. Brateanu , R. Balmez , A. Avram , C. Orhei , C. Ancuti

Low-Light Image Enhancement (LLIE) is crucial for improving both human perception and computer vision tasks. This paper addresses two challenges in zero-reference LLIE: obtaining perceptually 'good' images using the Contrastive…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Yuka Ogino , Takahiro Toizumi , Atsushi Ito

Semantic video segmentation is a key challenge for various applications. This paper presents a new model named Noisy-LSTM, which is trainable in an end-to-end manner, with convolutional LSTMs (ConvLSTMs) to leverage the temporal coherency…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Bowen Wang , Liangzhi Li , Yuta Nakashima , Ryo Kawasaki , Hajime Nagahara , Yasushi Yagi

Reference-guided video editing takes a source video, a text instruction, and a reference image as inputs, requiring the model to faithfully apply the instructed edits while preserving original motion and unedited content. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Tong Wang , Meng Zou , Chengjing Wu , Xiaochao Qu , Luoqi Liu , Xiaolin Hu , Ting Liu