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Wee Siong Ng

4 accepted papers

2024

From 2D to 3D: AISG-SLA Visual Localization Challenge

IJCAI 2024poster

Research in 3D mapping is crucial for smart city applications, yet the cost of acquiring 3D data often hinders progress. Visual localization, particularly monocular camera position estimation, offers a solution by determining the camera's pose solely through visual cues. However, this task is challe…

Cited by 0SourcePDFScholar
2024

SuperJunction: Learning-Based Junction Detection for Retinal Image Registration

AAAI 2024technical

Keypoints-based approaches have shown to be promising for retinal image registration, which superimpose two or more images from different views based on keypoint detection and description. However, existing approaches suffer from ineffective keypoint detector and descriptor training. Meanwhile, the…

2022

LUNAR: Unifying Local Outlier Detection Methods via Graph Neural Networks

AAAI 2022technical

Many well-established anomaly detection methods use the distance of a sample to those in its local neighbourhood: so-called `local outlier methods', such as LOF and DBSCAN. They are popular for their simple principles and strong performance on unstructured, feature-based data that is commonplace in…

2020

Robustness of Autoencoders for Anomaly Detection Under Adversarial Impact

IJCAI 2020poster

Detecting anomalies is an important task in a wide variety of applications and domains. Deep learning methods have achieved state-of-the-art performance in anomaly detection in recent years; unsupervised methods being particularly popular. However, deep learning methods can be fragile to small pertu…

Cited by 0SourcePDFScholar