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Ningzhong Liu

8 accepted papers

2026

HTNav: A Hybrid Navigation Framework with Tiered Structure for Urban Aerial Vision-and-Language Navigation

CVPR 2026

Inspired by the general Vision-and-Language Navigation (VLN) task, aerial VLN has attracted widespread attention, owing to its significant practical value in applications such as logistics delivery and urban inspection. However, existing methods face several challenges in complex urban environments,

Cited by 0SourceScholar
2026

RSPlace: Rotation Sensing Macro Placement via Bidirectional Tree Expansion

AAAI 2026technical

Macro placement is a crucial subproblem of chip design, focusing on determining the locations of numerous macros while minimizing multiple metrics. In recent years, reinforcement learning (RL) has gained traction as a favorable technique to improve placement performance. However, existing RL-based p

Cited by 0SourcePDFScholar
2026

Text-guided Controllable Diffusion for Realistic Camouflage Images Generation

AAAI 2026technical

Camouflage Images Generation (CIG) is an emerging research area that focuses on synthesizing images in which objects are harmoniously blended and exhibit high visual consistency with their surroundings. Existing methods perform CIG by either fusing objects into specific backgrounds or outpainting th

Cited by 0SourcePDFScholar
2025

Towards Cost-Effective Learning: A Synergy of Semi-Supervised and Active Learning

CVPR 2025poster

Active learning (AL) and semi-supervised learning (SSL) both aim to reduce annotation costs: AL selectively annotates high-value samples from the unlabeled data, while SSL leverages abundant unlabeled data to improve model performance. Although these two appear intuitively compatible, directly combi…

Cited by 0SourcePDFScholar
2021

Cross Scene Video Foreground Segmentation Via Co-Occurrence Probability Oriented Supervised and Unsupervised Model Interaction

ICASSP 2021accepted

Using only one deep model for cross scene video foreground segmentation is still very challenging because existing methods are scene-dependent, which restricts the consistent segmentation. In this paper, we propose a cross scene video foreground segmentation framework to extend the generalization ca…

Cited by 0SourceScholar
2021

Nlkd: Using Coarse Annotations For Semantic Segmentation Based on Knowledge Distillation

ICASSP 2021accepted

Modern supervised learning relies on a large amount of training data, yet there are many noisy annotations in real datasets. For semantic segmentation tasks, pixel-level annotation noise is typically located at the edge of an object, while pixels within objects are fine-annotated. We argue the coars…

Cited by 0SourceScholar