Search Results for author: Dimity Miller

Found 13 papers, 9 papers with code

Unlearning Backdoor Attacks through Gradient-Based Model Pruning

1 code implementation7 May 2024 Kealan Dunnett, Reza Arablouei, Dimity Miller, Volkan Dedeoglu, Raja Jurdak

In the era of increasing concerns over cybersecurity threats, defending against backdoor attacks is paramount in ensuring the integrity and reliability of machine learning models.

Open-Set Recognition in the Age of Vision-Language Models

1 code implementation25 Mar 2024 Dimity Miller, Niko Sünderhauf, Alex Kenna, Keita Mason

Are vision-language models (VLMs) for open-vocabulary perception inherently open-set models because they are trained on internet-scale datasets?

Open Set Learning

Addressing the Challenges of Open-World Object Detection

no code implementations27 Mar 2023 David Pershouse, Feras Dayoub, Dimity Miller, Niko Sünderhauf

We address the challenging problem of open world object detection (OWOD), where object detectors must identify objects from known classes while also identifying and continually learning to detect novel objects.

Object object-detection +1

Uncertainty-Aware Lidar Place Recognition in Novel Environments

1 code implementation4 Oct 2022 Keita Mason, Joshua Knights, Milad Ramezani, Peyman Moghadam, Dimity Miller

State-of-the-art lidar place recognition models exhibit unreliable performance when tested on environments different from their training dataset, which limits their use in complex and evolving environments.

Density-aware NeRF Ensembles: Quantifying Predictive Uncertainty in Neural Radiance Fields

no code implementations19 Sep 2022 Niko Sünderhauf, Jad Abou-Chakra, Dimity Miller

We show that ensembling effectively quantifies model uncertainty in Neural Radiance Fields (NeRFs) if a density-aware epistemic uncertainty term is considered.

Uncertainty Quantification

Never mind the metrics -- what about the uncertainty? Visualising confusion matrix metric distributions

1 code implementation5 Jun 2022 David Lovell, Dimity Miller, Jaiden Capra, Andrew Bradley

There are strong incentives to build models that demonstrate outstanding predictive performance on various datasets and benchmarks.

What's in the Black Box? The False Negative Mechanisms Inside Object Detectors

1 code implementation15 Mar 2022 Dimity Miller, Peyman Moghadam, Mark Cox, Matt Wildie, Raja Jurdak

Using this framework, we investigate why Faster R-CNN and RetinaNet fail to detect objects in benchmark vision datasets and robotics datasets.

Object object-detection +2

Uncertainty for Identifying Open-Set Errors in Visual Object Detection

1 code implementation3 Apr 2021 Dimity Miller, Niko Sünderhauf, Michael Milford, Feras Dayoub

We also introduce a methodology for converting existing object detection datasets into specific open-set datasets to evaluate open-set performance in object detection.

Object object-detection +1

Class Anchor Clustering: a Loss for Distance-based Open Set Recognition

1 code implementation6 Apr 2020 Dimity Miller, Niko Sünderhauf, Michael Milford, Feras Dayoub

We also show that our anchored class centres achieve higher open set performance than learnt class centres, particularly on object-based datasets and large numbers of training classes.

Clustering Open Set Learning

Probabilistic Object Detection: Definition and Evaluation

1 code implementation27 Nov 2018 David Hall, Feras Dayoub, John Skinner, Haoyang Zhang, Dimity Miller, Peter Corke, Gustavo Carneiro, Anelia Angelova, Niko Sünderhauf

We introduce Probabilistic Object Detection, the task of detecting objects in images and accurately quantifying the spatial and semantic uncertainties of the detections.

Object object-detection +1

Evaluating Merging Strategies for Sampling-based Uncertainty Techniques in Object Detection

no code implementations17 Sep 2018 Dimity Miller, Feras Dayoub, Michael Milford, Niko Sünderhauf

There has been a recent emergence of sampling-based techniques for estimating epistemic uncertainty in deep neural networks.

Clustering General Classification +3

Dropout Sampling for Robust Object Detection in Open-Set Conditions

no code implementations18 Oct 2017 Dimity Miller, Lachlan Nicholson, Feras Dayoub, Niko Sünderhauf

Dropout Variational Inference, or Dropout Sampling, has been recently proposed as an approximation technique for Bayesian Deep Learning and evaluated for image classification and regression tasks.

Image Classification Object +3

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