Search Results for author: Nanqing Liu

Found 8 papers, 5 papers with code

On the Adversarial Risk of Test Time Adaptation: An Investigation into Realistic Test-Time Data Poisoning

no code implementations7 Oct 2024 Yongyi Su, Yushu Li, Nanqing Liu, Kui Jia, Xulei Yang, Chuan-Sheng Foo, Xun Xu

We then propose an effective and realistic attack method that better produces poisoned samples without access to benign samples, and derive an effective in-distribution attack objective.

Data Poisoning Test-time Adaptation

PointSAM: Pointly-Supervised Segment Anything Model for Remote Sensing Images

1 code implementation20 Sep 2024 Nanqing Liu, Xun Xu, Yongyi Su, Haojie Zhang, Heng-Chao Li

In brief, we use the prompts of overlapping masks as corresponding negative signals, resulting in refined masks.

Image Segmentation Semantic Segmentation

PS-TTL: Prototype-based Soft-labels and Test-Time Learning for Few-shot Object Detection

1 code implementation11 Aug 2024 Yingjie Gao, Yanan Zhang, Ziyue Huang, Nanqing Liu, Di Huang

Specifically, we design a Test-Time Learning (TTL) module that employs a mean-teacher network for self-training to discover novel instances from test data, allowing detectors to learn better representations and classifiers for novel classes.

Few-Shot Object Detection object-detection

SSLChange: A Self-supervised Change Detection Framework Based on Domain Adaptation

1 code implementation28 May 2024 Yitao Zhao, Turgay Celik, Nanqing Liu, Feng Gao, Heng-Chao Li

In conventional remote sensing change detection (RS CD) procedures, extensive manual labeling for bi-temporal images is first required to maintain the performance of subsequent fully supervised training.

Change Detection Contrastive Learning +2

CLIP-Guided Source-Free Object Detection in Aerial Images

1 code implementation10 Jan 2024 Nanqing Liu, Xun Xu, Yongyi Su, Chengxin Liu, Peiliang Gong, Heng-Chao Li

Domain adaptation is crucial in aerial imagery, as the visual representation of these images can significantly vary based on factors such as geographic location, time, and weather conditions.

Domain Adaptation Object +3

Toward distortion-aware change detection in realistic scenarios

no code implementations10 Jan 2024 Yitao Zhao, Heng-Chao Li, Nanqing Liu, Rui Wang

The whole framework is composed of Pretext Representation Pre-training, Bitemporal Image Alignment, and Down-stream Decoder Fine-Tuning.

Change Detection Decoder

Semi-Supervised Object Detection with Uncurated Unlabeled Data for Remote Sensing Images

1 code implementation9 Oct 2023 Nanqing Liu, Xun Xu, Yingjie Gao, Heng-Chao Li

Semi-supervised object detection (SSOD) methods tackle this issue by generating pseudo-labels for the unlabeled data, assuming that all classes found in the unlabeled dataset are also represented in the labeled data.

Object object-detection +2

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