Search Results for author: Ognjen Arandjelović

Found 13 papers, 7 papers with code

Artwork Protection Against Neural Style Transfer Using Locally Adaptive Adversarial Color Attack

no code implementations18 Jan 2024 Zhongliang Guo, Kaixuan Wang, Weiye Li, Yifei Qian, Ognjen Arandjelović, Lei Fang

This process leverages neural networks to merge aesthetic elements of a style image with the structural aspects of a content image into a harmoniously integrated visual result.

Adversarial Attack Style Transfer

A Good Feature Extractor Is All You Need for Weakly Supervised Pathology Slide Classification

1 code implementation20 Nov 2023 Georg Wölflein, Dyke Ferber, Asier Rabasco Meneghetti, Omar S. M. El Nahhas, Daniel Truhn, Zunamys I. Carrero, David J. Harrison, Ognjen Arandjelović, Jakob N. Kather

We question this belief in the context of weakly supervised whole slide image classification, motivated by the emergence of powerful feature extractors trained using self-supervised learning on diverse pathology datasets.

Benchmarking Image Classification +2

Semi-Supervised Crowd Counting with Contextual Modeling: Facilitating Holistic Understanding of Crowd Scenes

1 code implementation16 Oct 2023 Yifei Qian, Xiaopeng Hong, Ognjen Arandjelović, Zhongliang Guo, Carl R. Donovan

To alleviate the heavy annotation burden for training a reliable crowd counting model and thus make the model more practicable and accurate by being able to benefit from more data, this paper presents a new semi-supervised method based on the mean teacher framework.

Crowd Counting

A White-Box False Positive Adversarial Attack Method on Contrastive Loss Based Offline Handwritten Signature Verification Models

1 code implementation17 Aug 2023 Zhongliang Guo, Weiye Li, Yifei Qian, Ognjen Arandjelović, Lei Fang

The key contributions of this paper include a novel false positive attack method, two new loss functions, effective style transfer in handwriting styles, and superior performance in white-box false positive attacks compared to other white-box attack methods.

Adversarial Attack Style Transfer

Deep Multiple Instance Learning with Distance-Aware Self-Attention

no code implementations17 May 2023 Georg Wölflein, Lucie Charlotte Magister, Pietro Liò, David J. Harrison, Ognjen Arandjelović

We evaluate our model on a custom MNIST-based MIL dataset that requires the consideration of relative spatial information, as well as on CAMELYON16, a publicly available cancer metastasis detection dataset, where we achieve a test AUROC score of 0. 91.

Cancer Metastasis Detection Multiple Instance Learning +1

HoechstGAN: Virtual Lymphocyte Staining Using Generative Adversarial Networks

1 code implementation13 Oct 2022 Georg Wölflein, In Hwa Um, David J Harrison, Ognjen Arandjelović

The presence and density of specific types of immune cells are important to understand a patient's immune response to cancer.

Hoechst Is All You Need: Lymphocyte Classification with Deep Learning

no code implementations9 Jul 2021 Jessica Cooper, In Hwa Um, Ognjen Arandjelović, David J Harrison

Multiplex immunofluorescence and immunohistochemistry benefit patients by allowing cancer pathologists to identify several proteins expressed on the surface of cells, enabling cell classification, better understanding of the tumour micro-environment, more accurate diagnoses, prognoses, and tailored immunotherapy based on the immune status of individual patients.

Classification

Determining Chess Game State From an Image

1 code implementation30 Apr 2021 Georg Wölflein, Ognjen Arandjelović

Identifying the configuration of chess pieces from an image of a chessboard is a problem in computer vision that has not yet been solved accurately.

Transfer Learning

Believe The HiPe: Hierarchical Perturbation for Fast, Robust, and Model-Agnostic Saliency Mapping

1 code implementation22 Feb 2021 Jessica Cooper, Ognjen Arandjelović, David J Harrison

Understanding the predictions made by Artificial Intelligence (AI) systems is becoming more and more important as deep learning models are used for increasingly complex and high-stakes tasks.

Deep Learning for Whole Slide Image Analysis: An Overview

no code implementations18 Oct 2019 Neofytos Dimitriou, Ognjen Arandjelović, Peter D. Caie

The widespread adoption of whole slide imaging has increased the demand for effective and efficient gigapixel image analysis.

Translation whole slide images

Contextually learnt detection of unusual motion-based behaviour in crowded public spaces

no code implementations25 Sep 2013 Ognjen Arandjelović

In this paper we are interested in analyzing behaviour in crowded public places at the level of holistic motion.

Clustering

Multiple-object tracking in cluttered and crowded public spaces

no code implementations25 Sep 2013 Rhys Martin, Ognjen Arandjelović

This paper addresses the problem of tracking moving objects of variable appearance in challenging scenes rich with features and texture.

Motion Detection Multiple Object Tracking

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