Search Results for author: Arnold Wiliem

Found 25 papers, 5 papers with code

Zoom-shot: Fast and Efficient Unsupervised Zero-Shot Transfer of CLIP to Vision Encoders with Multimodal Loss

no code implementations22 Jan 2024 Jordan Shipard, Arnold Wiliem, Kien Nguyen Thanh, Wei Xiang, Clinton Fookes

To address this issue, we propose Zoom-shot, a novel method for transferring the zero-shot capabilities of CLIP to any pre-trained vision encoder.

Knowledge Distillation Zero-Shot Learning

SafeSea: Synthetic Data Generation for Adverse & Low Probability Maritime Conditions

1 code implementation24 Nov 2023 Martin Tran, Jordan Shipard, Hermawan Mulyono, Arnold Wiliem, Clinton Fookes

Lastly, we observed that a maritime object detection model faced challenges in detecting objects in stormy sea backgrounds, emphasizing the impact of weather conditions on detection accuracy.

object-detection Object Detection +1

Diversity is Definitely Needed: Improving Model-Agnostic Zero-shot Classification via Stable Diffusion

1 code implementation7 Feb 2023 Jordan Shipard, Arnold Wiliem, Kien Nguyen Thanh, Wei Xiang, Clinton Fookes

In this work, we investigate the problem of Model-Agnostic Zero-Shot Classification (MA-ZSC), which refers to training non-specific classification architectures (downstream models) to classify real images without using any real images during training.

Classification Text-to-Image Generation +1

Does Interference Exist When Training a Once-For-All Network?

1 code implementation20 Apr 2022 Jordan Shipard, Arnold Wiliem, Clinton Fookes

To show this, we propose a simple-yet-effective method called Random Subnet Sampling (RSS), which does not have mitigation on the interference effect.

Selection bias

Unsupervised Domain Adaptive Object Detection using Forward-Backward Cyclic Adaptation

no code implementations3 Feb 2020 Siqi Yang, Lin Wu, Arnold Wiliem, Brian C. Lovell

To achieve gradient alignment, we propose Forward-Backward Cyclic Adaptation, which iteratively computes adaptation from source to target via backward hopping and from target to source via forward passing.

Image Classification object-detection +2

To What Extent Does Downsampling, Compression, and Data Scarcity Impact Renal Image Analysis?

no code implementations22 Sep 2019 Can Peng, Kun Zhao, Arnold Wiliem, Teng Zhang, Peter Hobson, Anthony Jennings, Brian C. Lovell

Critical findings are observed: (1) The best balance between detection accuracy, detection speed and file size is achieved at 8 times downsampling captured with a $40\times$ objective; (2) compression which reduces the file size dramatically, does not necessarily have an adverse effect on overall accuracy; (3) reducing the amount of training data to some extents causes a drop in precision but has a negligible impact on the recall; (4) in most cases, Faster R-CNN achieves the best accuracy in the glomerulus detection task.

Image Compression

CORAL8: Concurrent Object Regression for Area Localization in Medical Image Panels

no code implementations24 Jun 2019 Sam Maksoud, Arnold Wiliem, Kun Zhao, Teng Zhang, Lin Wu, Brian C. Lovell

This is because the system can ignore the attention mechanism by assigning equal weights for all members.

regression

Deep Instance-Level Hard Negative Mining Model for Histopathology Images

1 code implementation24 Jun 2019 Meng Li, Lin Wu, Arnold Wiliem, Kun Zhao, Teng Zhang, Brian C. Lovell

Histopathology image analysis can be considered as a Multiple instance learning (MIL) problem, where the whole slide histopathology image (WSI) is regarded as a bag of instances (i. e, patches) and the task is to predict a single class label to the WSI.

General Classification Multiple Instance Learning

Convex Class Model on Symmetric Positive Definite Manifolds

no code implementations14 Jun 2018 Kun Zhao, Arnold Wiliem, Shaokang Chen, Brian C. Lovell

Our proposed framework, named Manifold Convex Class Model, represents each class on SPD manifolds using a convex model, and classification can be performed by computing distances to the convex models.

Classification General Classification +4

SlideNet: Fast and Accurate Slide Quality Assessment Based on Deep Neural Networks

no code implementations20 Mar 2018 Teng Zhang, Johanna Carvajal, Daniel F. Smith, Kun Zhao, Arnold Wiliem, Peter Hobson, Anthony Jennings, Brian C. Lovell

In order to address the quality assessment problem, we propose a deep neural network based framework to automatically assess the slide quality in a semantic way.

Using LIP to Gloss Over Faces in Single-Stage Face Detection Networks

no code implementations ECCV 2018 Siqi Yang, Arnold Wiliem, Shaokang Chen, Brian C. Lovell

We show that existing adversarial perturbation methods are not effective to perform such an attack, especially when there are multiple faces in the input image.

Face Detection

TV-GAN: Generative Adversarial Network Based Thermal to Visible Face Recognition

2 code implementations7 Dec 2017 Teng Zhang, Arnold Wiliem, Siqi Yang, Brian C. Lovell

While it can greatly increase the scope and benefits of the current security surveillance systems, performing such a task using thermal images is a challenging problem compared to face recognition task in the Visible Light Domain (VLD).

Face Recognition Generative Adversarial Network

What is the Best Way for Extracting Meaningful Attributes from Pictures?

no code implementations17 Oct 2016 Liangchen Liu, Arnold Wiliem, Shaokang Chen, Brian C. Lovell

With this metric, automatic quantitative evaluation can be performed on the attribute sets; thus, reducing the enormous effort to perform manual evaluation.

Attribute

Towards Miss Universe Automatic Prediction: The Evening Gown Competition

no code implementations26 Apr 2016 Johanna Carvajal, Arnold Wiliem, Conrad Sanderson, Brian Lovell

Can we predict the winner of Miss Universe after watching how they stride down the catwalk during the evening gown competition?

Determining the best attributes for surveillance video keywords generation

no code implementations21 Feb 2016 Liangchen Liu, Arnold Wiliem, Shaokang Chen, Kun Zhao, Brian C. Lovell

In this paper, we propose a novel approach, based on the shared structure exhibited amongst meaningful attributes, that enables us to compare between different automatic attribute discovery approaches. We then validate our approach by comparing various attribute discovery methods such as PiCoDeS on two attribute datasets.

Attribute

Automatic and Quantitative evaluation of attribute discovery methods

no code implementations5 Feb 2016 Liangchen Liu, Arnold Wiliem, Shaokang Chen, Brian C. Lovell

In our evaluation, we gleaned some insights that could be beneficial in developing automatic attribute discovery methods to generate meaningful attributes.

Attribute Image Classification

Efficient Clustering on Riemannian Manifolds: A Kernelised Random Projection Approach

no code implementations18 Sep 2015 Kun Zhao, Azadeh Alavi, Arnold Wiliem, Brian C. Lovell

We then validate our framework on several computer vision applications by comparing against popular clustering methods on Riemannian manifolds.

Clustering

Automatic Classification of Human Epithelial Type 2 Cell Indirect Immunofluorescence Images using Cell Pyramid Matching

no code implementations15 Mar 2014 Arnold Wiliem, Conrad Sanderson, Yongkang Wong, Peter Hobson, Rodney F. Minchin, Brian C. Lovell

This paper describes a novel system for automatic classification of images obtained from Anti-Nuclear Antibody (ANA) pathology tests on Human Epithelial type 2 (HEp-2) cells using the Indirect Immunofluorescence (IIF) protocol.

General Classification Image Classification

Random Projections on Manifolds of Symmetric Positive Definite Matrices for Image Classification

no code implementations4 Mar 2014 Azadeh Alavi, Arnold Wiliem, Kun Zhao, Brian C. Lovell, Conrad Sanderson

Recent advances suggest that encoding images through Symmetric Positive Definite (SPD) matrices and then interpreting such matrices as points on Riemannian manifolds can lead to increased classification performance.

Face Recognition General Classification +3

Matching Image Sets via Adaptive Multi Convex Hull

no code implementations3 Mar 2014 Shaokang Chen, Arnold Wiliem, Conrad Sanderson, Brian C. Lovell

We then propose adaptive reference clustering (ARC) to constrain the clustering of each gallery image set by forcing the clusters to have resemblance to the clusters in the query image set.

Clustering General Classification

Classification of Human Epithelial Type 2 Cell Indirect Immunofluoresence Images via Codebook Based Descriptors

no code implementations4 Apr 2013 Arnold Wiliem, Yongkang Wong, Conrad Sanderson, Peter Hobson, Shaokang Chen, Brian C. Lovell

In this paper, we propose a cell classification system comprised of a dual-region codebook-based descriptor, combined with the Nearest Convex Hull Classifier.

General Classification

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