Search Results for author: Simon Hadfield

Found 37 papers, 14 papers with code

BEV-CV: Birds-Eye-View Transform for Cross-View Geo-Localisation

no code implementations23 Dec 2023 Tavis Shore, Simon Hadfield, Oscar Mendez

Cross-view image matching for geo-localisation is a challenging problem due to the significant visual difference between aerial and ground-level viewpoints.

Navigate

Kick Back & Relax: Learning to Reconstruct the World by Watching SlowTV

1 code implementation ICCV 2023 Jaime Spencer, Chris Russell, Simon Hadfield, Richard Bowden

Unfortunately, existing approaches limit themselves to the automotive domain, resulting in models incapable of generalizing to complex environments such as natural or indoor settings.

Monocular Depth Estimation Motion Estimation +1

CERiL: Continuous Event-based Reinforcement Learning

no code implementations15 Feb 2023 Celyn Walters, Simon Hadfield

We present a method to train on event streams derived from standard RL environments, thereby solving the proposed continuous time RL problem.

reinforcement-learning Reinforcement Learning (RL)

SVS: Adversarial refinement for sparse novel view synthesis

1 code implementation14 Nov 2022 Violeta Menéndez González, Andrew Gilbert, Graeme Phillipson, Stephen Jolly, Simon Hadfield

This is a view synthesis problem where the number of reference views is limited, and the baseline between target and reference view is significant.

Novel View Synthesis

EDeNN: Event Decay Neural Networks for low latency vision

no code implementations9 Sep 2022 Celyn Walters, Simon Hadfield

Despite the success of neural networks in computer vision tasks, digital 'neurons' are a very loose approximation of biological neurons.

Optical Flow Estimation

Deconstructing Self-Supervised Monocular Reconstruction: The Design Decisions that Matter

2 code implementations2 Aug 2022 Jaime Spencer, Chris Russell, Simon Hadfield, Richard Bowden

It is likely that many papers were not only optimized for particular datasets, but also for errors in the data and evaluation criteria.

Monocular Depth Estimation Monocular Reconstruction

Adaptive sampling for scanning pixel cameras

no code implementations27 Jul 2022 Yusuf Duman, Jean-yves Guillemaut, Simon Hadfield

A scanning pixel camera is a novel low-cost, low-power sensor that is not diffraction limited.

Image Classification Semantic Segmentation

Generalizing to New Tasks via One-Shot Compositional Subgoals

no code implementations16 May 2022 Xihan Bian, Oscar Mendez, Simon Hadfield

In addition to improving learning efficiency for standard long-term tasks, this approach also makes it possible to perform one-shot generalization to previously unseen tasks, given only a single reference trajectory for the task in a different environment.

Imitation Learning

SaiNet: Stereo aware inpainting behind objects with generative networks

no code implementations14 May 2022 Violeta Menéndez González, Andrew Gilbert, Graeme Phillipson, Stephen Jolly, Simon Hadfield

In this work, we present an end-to-end network for stereo-consistent image inpainting with the objective of inpainting large missing regions behind objects.

Image Inpainting

Medusa: Universal Feature Learning via Attentional Multitasking

no code implementations12 Apr 2022 Jaime Spencer, Richard Bowden, Simon Hadfield

We argue that MTL is a stepping stone towards universal feature learning (UFL), which is the ability to learn generic features that can be applied to new tasks without retraining.

Multi-Task Learning

SILT: Self-supervised Lighting Transfer Using Implicit Image Decomposition

1 code implementation25 Oct 2021 Nikolina Kubiak, Armin Mustafa, Graeme Phillipson, Stephen Jolly, Simon Hadfield

We then remap this unified input domain using a discriminator that is presented with the generated outputs and the style reference, i. e. images of the desired illumination conditions.

EVReflex: Dense Time-to-Impact Prediction for Event-based Obstacle Avoidance

no code implementations1 Sep 2021 Celyn Walters, Simon Hadfield

The broad scope of obstacle avoidance has led to many kinds of computer vision-based approaches.

Markov Localisation using Heatmap Regression and Deep Convolutional Odometry

no code implementations1 Jun 2021 Oscar Mendez, Simon Hadfield, Richard Bowden

Recent advances in deep learning hardware allow large likelihood volumes to be stored directly on the GPU, along with the hardware necessary to efficiently perform GPU-bound 3D convolutions and this obviates many of the disadvantages of grid based methods.

regression

Diagonal Memory Optimisation for Machine Learning on Micro-controllers

no code implementations4 Oct 2020 Peter Blacker, Christopher Paul Bridges, Simon Hadfield

Micro-controller targets are identified where it is only possible to deploy some models if diagonal memory optimisation is used.

BIG-bench Machine Learning

Multi-channel Transformers for Multi-articulatory Sign Language Translation

no code implementations1 Sep 2020 Necati Cihan Camgoz, Oscar Koller, Simon Hadfield, Richard Bowden

Sign languages use multiple asynchronous information channels (articulators), not just the hands but also the face and body, which computational approaches often ignore.

Sign Language Translation Translation

DeFeat-Net: General Monocular Depth via Simultaneous Unsupervised Representation Learning

1 code implementation CVPR 2020 Jaime Spencer, Richard Bowden, Simon Hadfield

In the current monocular depth research, the dominant approach is to employ unsupervised training on large datasets, driven by warped photometric consistency.

Monocular Depth Estimation Representation Learning

Same Features, Different Day: Weakly Supervised Feature Learning for Seasonal Invariance

1 code implementation CVPR 2020 Jaime Spencer, Richard Bowden, Simon Hadfield

The aim of this paper is to provide a dense feature representation that can be used to perform localization, sparse matching or image retrieval, regardless of the current seasonal or temporal appearance.

Image Retrieval Retrieval

Scale-Adaptive Neural Dense Features: Learning via Hierarchical Context Aggregation

1 code implementation CVPR 2019 Jaime Spencer, Richard Bowden, Simon Hadfield

In all cases, we show how incorporating SAND features results in better or comparable results to the baseline, whilst requiring little to no additional training.

Disparity Estimation Semantic Segmentation

Localisation via Deep Imagination: learn the features not the map

no code implementations19 Nov 2018 Jaime Spencer, Oscar Mendez, Richard Bowden, Simon Hadfield

In order to build the embedded map, we train a deep Siamese Fully Convolutional U-Net to perform dense feature extraction.

Neural Sign Language Translation

1 code implementation CVPR 2018 Necati Cihan Camgoz, Simon Hadfield, Oscar Koller, Hermann Ney, Richard Bowden

SLR seeks to recognize a sequence of continuous signs but neglects the underlying rich grammatical and linguistic structures of sign language that differ from spoken language.

Gesture Recognition Language Modelling +5

Taking the Scenic Route to 3D: Optimising Reconstruction From Moving Cameras

no code implementations ICCV 2017 Oscar Mendez, Simon Hadfield, Nicolas Pugeault, Richard Bowden

This approach is ill-suited for reconstruction applications, where learning about the environment is more valuable than speed of traversal.

SeDAR - Semantic Detection and Ranging: Humans can localise without LiDAR, can robots?

no code implementations5 Sep 2017 Oscar Mendez, Simon Hadfield, Nicolas Pugeault, Richard Bowden

Similarly, we do not extrude the 2D geometry present in the floorplan into 3D and try to align it to the real-world.

Exploring Causal Relationships in Visual Object Tracking

no code implementations ICCV 2015 Karel Lebeda, Simon Hadfield, Richard Bowden

We show that the location predictions are robust to camera shake and sud- den motion, which is invaluable for any tracking algorithm and demonstrate this by applying causal prediction to two state-of-the-art trackers.

Object Visual Object Tracking

Hollywood 3D: Recognizing Actions in 3D Natural Scenes

no code implementations CVPR 2013 Simon Hadfield, Richard Bowden

In addition, two state of the art action recognition algorithms are extended to make use of the 3D data, and five new interest point detection strategies are also proposed, that extend to the 3D data.

Action Recognition Benchmarking +2

Cannot find the paper you are looking for? You can Submit a new open access paper.