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3D Gaussian Splatting has demonstrated notable success in large-scale scene reconstruction, but challenges persist due to high training memory consumption and storage overhead. Hybrid representations that integrate implicit and explicit…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Jixuan Fan , Wanhua Li , Yifei Han , Tianru Dai , Yansong Tang

Auditory Attention Detection (AAD) aims to detect target speaker from brain signals in a multi-speaker environment. Although EEG-based AAD methods have shown promising results in recent years, current approaches primarily rely on…

Signal Processing · Electrical Eng. & Systems 2023-09-15 Cunhang Fan , Hongyu Zhang , Wei Huang , Jun Xue , Jianhua Tao , Jiangyan Yi , Zhao Lv , Xiaopei Wu

We address the challenge of lifting 2D visual segmentation to 3D in Gaussian Splatting. Existing methods often suffer from inconsistent 2D masks across viewpoints and produce noisy segmentation boundaries as they neglect these semantic cues…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Hongyu Shen , Junfeng Ni , Yixin Chen , Weishuo Li , Mingtao Pei , Siyuan Huang

Accurately perceiving dynamic environments is a fundamental task for autonomous driving and robotic systems. Existing methods inadequately utilize temporal information, relying mainly on local temporal interactions between adjacent frames…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Tianhao Li , Yang Li , Mengtian Li , Yisheng Deng , Weifeng Ge

With the rapid development of AIGC technologies, generative image steganography has attracted increasing attention due to its high imperceptibility and flexibility. However, existing generative steganography methods often maintain…

Cryptography and Security · Computer Science 2026-02-03 Yuhao Xue , Jiuan Zhou , Yu Cheng , Zhaoxia Yin

Text-to-3D generation aims to create 3D assets from text-to-image diffusion models. However, existing methods face an inherent bottleneck in generation quality because the widely-used objectives such as Score Distillation Sampling (SDS)…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Zixuan Chen , Ruijie Su , Jiahao Zhu , Lingxiao Yang , Jian-Huang Lai , Xiaohua Xie

Unsupervised Domain Adaptation (UDA) seeks to transfer knowledge from a labeled source domain to an unlabeled target domain but often suffers from severe domain and scale gaps that degrade performance. Existing cross-attention-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Zelin Zang , Yehui Yang , Fei Wang , Liangyu Li , Baigui Sun

The Adaptive Momentum Estimation (Adam) algorithm is highly effective in training various deep learning tasks. Despite this, there's limited theoretical understanding for Adam, especially when focusing on its vanilla form in non-convex…

Optimization and Control · Mathematics 2025-02-25 Yusu Hong , Junhong Lin

In point cloud analysis tasks, the existing local feature aggregation descriptors (LFAD) are unable to fully utilize information in the neighborhood of central points. Previous methods rely solely on Euclidean distance to constrain the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Haotian Hu , Fanyi Wang , Jingwen Su , Hongtao Zhou , Yaonong Wang , Laifeng Hu , Yanhao Zhang , Zhiwang Zhang

Recent advances in 3D Gaussian Splatting (3DGS) have demonstrated remarkable capabilities in real-time and photorealistic novel view synthesis. However, traditional 3DGS representations often struggle with large-scale scene management and…

Graphics · Computer Science 2025-08-08 Zijian Wang , Beizhen Zhao , Hao Wang

In the task of 3D Aerial-view Scene Semantic Segmentation (3D-AVS-SS), traditional methods struggle to address semantic ambiguity caused by scale variations and structural occlusions in aerial images. This limits their segmentation accuracy…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Xu Tang , Junan Jia , Yijing Wang , Jingjing Ma , Xiangrong Zhang

Unsupervised point cloud segmentation is critical for embodied artificial intelligence and autonomous driving, as it mitigates the prohibitive cost of dense point-level annotations required by fully supervised methods. While integrating 2D…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Yixiao Song , Qingyong Li , Wen Wang , Zhicheng Yan

3D Gaussian Splatting (3DGS) has emerged as a promising framework for novel view synthesis, boasting rapid rendering speed with high fidelity. However, the substantial Gaussians and their associated attributes necessitate effective…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Yihang Chen , Qianyi Wu , Weiyao Lin , Mehrtash Harandi , Jianfei Cai

Semantic segmentation of 3D LiDAR data plays a pivotal role in autonomous driving. Traditional approaches rely on extensive annotated data for point cloud analysis, incurring high costs and time investments. In contrast, realworld image…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Jialiang Kang , Jiawen Wang , Dingsheng Luo

Recent progress in text-to-3D object generation enables the synthesis of detailed geometry from text input by leveraging 2D diffusion models and differentiable 3D representations. However, the approaches often suffer from limited…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Ming He , Zhixiang Chen , Steve Maddock

Distribution Matching Distillation (DMD) is a powerful acceleration paradigm, yet its stability is often compromised in Forbidden Zone, regions where the real teacher provides unreliable guidance while the fake teacher exerts insufficient…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Lichen Bai , Zikai Zhou , Shitong Shao , Wenliang Zhong , Shuo Yang , Shuo Chen , Bojun Chen , Zeke Xie

Score distillation sampling (SDS) and its variants have greatly boosted the development of text-to-3D generation, but are vulnerable to geometry collapse and poor textures yet. To solve this issue, we first deeply analyze the SDS and find…

Computer Vision and Pattern Recognition · Computer Science 2024-06-14 Zike Wu , Pan Zhou , Xuanyu Yi , Xiaoding Yuan , Hanwang Zhang

While classifier-free guidance (CFG) is essential for conditional diffusion models, it doubles the number of neural function evaluations (NFEs) per inference step. To mitigate this inefficiency, we introduce adapter guidance distillation…

Machine Learning · Computer Science 2025-03-11 Cristian Perez Jensen , Seyedmorteza Sadat

Score Distillation Sampling (SDS) has emerged as a prevalent technique for text-to-3D generation, enabling 3D content creation by distilling view-dependent information from text-to-2D guidance. However, they frequently exhibit shortcomings…

Computer Vision and Pattern Recognition · Computer Science 2024-09-20 Zeyu Cai , Duotun Wang , Yixun Liang , Zhijing Shao , Ying-Cong Chen , Xiaohang Zhan , Zeyu Wang

In cold-start scenarios, the scarcity of collaborative signals for new items exacerbates the Matthew effect, which undermines platform diversity and remains a persistent challenge in real-world recommender systems. Existing methods…

Information Retrieval · Computer Science 2026-03-25 Hai Zhu , Yantao Yu , Lei Shen , Bing Wang , Xiaoyi Zeng