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3D Gaussian Splatting is capable of reconstructing 3D scenes in minutes. Despite recent advances in improving surface reconstruction accuracy, the reconstructed results still exhibit bias and suffer from inefficiency in storage and…

计算机视觉与模式识别 · 计算机科学 2024-12-04 Weixing Zhang , Zongrui Li , De Ma , Huajin Tang , Xudong Jiang , Qian Zheng , Gang Pan

Face retouching requires removing subtle imperfections while preserving unique facial identity features, in order to enhance overall aesthetic appeal. However, existing methods suffer from a fundamental trade-off. Supervised learning on…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Jiachen Yang , Xianhui Lin , Yi Dong , Zebiao Zheng , Xing Liu , Hong Gu , Yanmei Fang

Recently, GRPO-based reinforcement learning has shown remarkable progress in optimizing flow-matching models, effectively improving their alignment with task-specific rewards. Within these frameworks, the policy update relies on…

计算机视觉与模式识别 · 计算机科学 2025-10-31 Jing Wang , Jiajun Liang , Jie Liu , Henglin Liu , Gongye Liu , Jun Zheng , Wanyuan Pang , Ao Ma , Zhenyu Xie , Xintao Wang , Meng Wang , Pengfei Wan , Xiaodan Liang

Distortion identification and rectification in images and videos is vital for achieving good performance in downstream vision applications. Instead of relying on fixed trial-and-error based image processing pipelines, we propose a two-level…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Aditya Kapoor , Harshad Khadilkar , Jayvardhana Gubbi

Ptychography is now integrated as a tool in mainstream microscopy allowing quantitative and high-resolution imaging capabilities over a wide field of view. However, its ultimate performance is inevitably limited by the available coherent…

计算物理 · 物理学 2024-06-12 Wenhui Xu , Shoucong Ning , Pengju Sheng , Huixiang Lin , Angus I Kirkland , Yong Peng , Fucai Zhang

The key limitations of digital inline holography (DIH) for particle tracking applications are poor longitudinal resolution, particle concentration limits, and case-specific processing. We utilize an inverse problem method with fused lasso…

图像与视频处理 · 电气工程与系统科学 2019-07-24 Kevin Mallery , Jiarong Hong

In recent years, diffusion models have revolutionized visual generation, outperforming traditional frameworks like Generative Adversarial Networks (GANs). However, generating images of humans with realistic semantic parts, such as hands and…

计算机视觉与模式识别 · 计算机科学 2024-11-14 Benzhi Wang , Jingkai Zhou , Jingqi Bai , Yang Yang , Weihua Chen , Fan Wang , Zhen Lei

This is an official pytorch implementation of Deep High-Resolution Representation Learning for Human Pose Estimation. In this work, we are interested in the human pose estimation problem with a focus on learning reliable high-resolution…

计算机视觉与模式识别 · 计算机科学 2019-02-26 Ke Sun , Bin Xiao , Dong Liu , Jingdong Wang

Deep learning methods for pansharpening have advanced rapidly, yet models pretrained on data from a specific sensor often generalize poorly to data from other sensors. Existing methods to tackle such cross-sensor degradation include…

计算机视觉与模式识别 · 计算机科学 2025-11-21 Tianyu Xin , Jin-Liang Xiao , Zeyu Xia , Shan Yin , Liang-Jian Deng

Reinforcement learning from human feedback (RLHF) shows promise for aligning diffusion and flow models, yet policy optimization methods such as GRPO suffer from inefficient and static sampling strategies. These methods treat all prompts and…

机器学习 · 计算机科学 2026-02-09 Yuming Li , Qingyu Li , Chengyu Bai , Xiangyang Luo , Zeyue Xue , Wenyu Qin , Meng Wang , Yikai Wang , Shanghang Zhang

Hardware distortions (HWD) render drastic effects on the performance of communication systems. They are recently proven to bear asymmetric signatures; and hence can be efficiently mitigated using improper Gaussian signaling (IGS), thanks to…

信号处理 · 电气工程与系统科学 2020-09-14 Sidrah Javed , Ahmed Elzanaty , Osama Amin , Basem Shihada , Mohamed-Slim Alouini

Text-to-Image Diffusion models excel at generating images from text prompts but often exhibit suboptimal alignment with content semantics, aesthetics, and human preferences. To address these limitations, this study proposes a novel…

机器学习 · 计算机科学 2025-05-19 Jianping Ye , Michel Wedel , Kunpeng Zhang

High-fidelity reconstruction of deformable tissues from endoscopic videos remains challenging due to the limitations of existing methods in capturing subtle color variations and modeling global deformations. While 3D Gaussian Splatting…

计算机视觉与模式识别 · 计算机科学 2025-08-27 Qun Ji , Peng Li , Mingqiang Wei

Group Relative Policy Optimization (GRPO) has emerged as an effective and lightweight framework for post-training visual generative models. However, its performance is fundamentally limited by the ambiguity of textual visual correspondence:…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Ruiying Liu , Yuanzhi Liang , Haibin Huang , Tianshu Yu , Chi Zhang

In traditional reversible data hiding (RDH) methods, researchers pay attention to enlarge the embedding capacity (EC) and to reduce the embedding distortion (ED). Recently, a completely novel RDH algorithm was developed to embed secret data…

多媒体 · 计算机科学 2019-08-19 Erdun Gao , Zhibin Pan , Xinyi Gao

In many areas of science and engineering, computer simulations are widely used as proxies for physical experiments, which can be infeasible or unethical. Such simulations can often be computationally expensive, and an emulator can be…

机器学习 · 统计学 2023-02-03 Tao Tang , Simon Mak , David Dunson

We propose a novel quasi-Newton method for solving the sparse inverse covariance estimation problem also known as the graphical least absolute shrinkage and selection operator (GLASSO). This problem is often solved using a second-order…

数值分析 · 数学 2023-10-18 Gal Shalom , Eran Treister , Irad Yavneh

Rendering high-resolution (HR) graphics brings substantial computational costs. Efficient graphics super-resolution (SR) methods may achieve HR rendering with small computing resources and have attracted extensive research interests in…

图像与视频处理 · 电气工程与系统科学 2022-10-11 Jinjin Gu , Haoming Cai , Chenyu Dong , Ruofan Zhang , Yulun Zhang , Wenming Yang , Chun Yuan

Reservoir computers (RCs) are among the fastest to train of all neural networks, especially when they are compared to other recurrent neural networks. RC has this advantage while still handling sequential data exceptionally well. However,…

机器学习 · 计算机科学 2022-07-14 Hayden Joy , Marios Mattheakis , Pavlos Protopapas

The partial correlation graphical LASSO (PCGLASSO) is a penalised likelihood method for Gaussian graphical models which provides scale invariant sparse estimation of the precision matrix and improves upon the popular graphical LASSO method.…

统计方法学 · 统计学 2025-10-30 Jack Storror Carter , Cesare Molinari