Search Results for author: Dylan Campbell

Found 34 papers, 18 papers with code

Deep Novel View Synthesis from Colored 3D Point Clouds

1 code implementation ECCV 2020 Zhenbo Song, Wayne Chen, Dylan Campbell, Hongdong Li

We propose a new deep neural network which takes a colored 3D point cloud of a scene, and directly synthesizes a photo-realistic image from an arbitrary viewpoint.

Image Generation Novel View Synthesis

Stale Diffusion: Hyper-realistic 5D Movie Generation Using Old-school Methods

no code implementations1 Apr 2024 Joao F. Henriques, Dylan Campbell, Tengda Han

As the horses have long left the barn, our proposal may be seen as antiquated and irrelevant.

An Empirical Study Into What Matters for Calibrating Vision-Language Models

no code implementations12 Feb 2024 Weijie Tu, Weijian Deng, Dylan Campbell, Stephen Gould, Tom Gedeon

Vision--Language Models (VLMs) have emerged as the dominant approach for zero-shot recognition, adept at handling diverse scenarios and significant distribution changes.

Zero-Shot Learning

SCENES: Subpixel Correspondence Estimation With Epipolar Supervision

no code implementations19 Jan 2024 Dominik A. Kloepfer, João F. Henriques, Dylan Campbell

We relax this assumption by removing the requirement of 3D structure, e. g., depth maps or point clouds, and only require camera pose information, which can be obtained from odometry.

Pose Estimation

Detecting and Restoring Non-Standard Hands in Stable Diffusion Generated Images

no code implementations7 Dec 2023 Yiqun Zhang, Zhenyue Qin, Yang Liu, Dylan Campbell

We introduce a pipeline to address anatomical inaccuracies in Stable Diffusion generated hand images.

Pose Estimation

IMPUS: Image Morphing with Perceptually-Uniform Sampling Using Diffusion Models

1 code implementation12 Nov 2023 Zhaoyuan Yang, Zhengyang Yu, Zhiwei Xu, Jaskirat Singh, Jing Zhang, Dylan Campbell, Peter Tu, Richard Hartley

We present a diffusion-based image morphing approach with perceptually-uniform sampling (IMPUS) that produces smooth, direct and realistic interpolations given an image pair.

Image Generation Image Morphing

LoCUS: Learning Multiscale 3D-consistent Features from Posed Images

no code implementations ICCV 2023 Dominik A. Kloepfer, Dylan Campbell, João F. Henriques

We start from the idea that the training objective can be framed as a patch retrieval problem: given an image patch in one view of a scene, we would like to retrieve (with high precision and recall) all patches in other views that map to the same real-world location.

Instance Segmentation Retrieval +1

Probabilistic and Semantic Descriptions of Image Manifolds and Their Applications

no code implementations6 Jul 2023 Peter Tu, Zhaoyuan Yang, Richard Hartley, Zhiwei Xu, Jing Zhang, Yiwei Fu, Dylan Campbell, Jaskirat Singh, Tianyu Wang

This paper begins with a description of methods for estimating image probability density functions that reflects the observation that such data is usually constrained to lie in restricted regions of the high-dimensional image space-not every pattern of pixels is an image.

Rethinking Polyp Segmentation from an Out-of-Distribution Perspective

1 code implementation13 Jun 2023 Ge-Peng Ji, Jing Zhang, Dylan Campbell, Huan Xiong, Nick Barnes

Unlike existing fully-supervised approaches, we rethink colorectal polyp segmentation from an out-of-distribution perspective with a simple but effective self-supervised learning approach.

Segmentation Self-Supervised Learning

A 23 MW data centre is all you need

no code implementations31 Mar 2022 Samuel Albanie, Dylan Campbell, João F. Henriques

The field of machine learning has achieved striking progress in recent years, witnessing breakthrough results on language modelling, protein folding and nitpickingly fine-grained dog breed classification.

Board Games Language Modelling +1

Accurate 3-DoF Camera Geo-Localization via Ground-to-Satellite Image Matching

1 code implementation26 Mar 2022 Yujiao Shi, Xin Yu, Liu Liu, Dylan Campbell, Piotr Koniusz, Hongdong Li

We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database with geotagged satellite images.

Image Retrieval Retrieval

Exploiting Problem Structure in Deep Declarative Networks: Two Case Studies

no code implementations24 Feb 2022 Stephen Gould, Dylan Campbell, Itzik Ben-Shabat, Chamin Hewa Koneputugodage, Zhiwei Xu

Deep declarative networks and other recent related works have shown how to differentiate the solution map of a (continuous) parametrized optimization problem, opening up the possibility of embedding mathematical optimization problems into end-to-end learnable models.

Vocal Bursts Valence Prediction

Zero-Shot Learning on 3D Point Cloud Objects and Beyond

1 code implementation11 Apr 2021 Ali Cheraghian, Shafinn Rahman, Townim F. Chowdhury, Dylan Campbell, Lars Petersson

Zero-shot learning, the task of learning to recognize new classes not seen during training, has received considerable attention in the case of 2D image classification.

3D Point Cloud Classification Classification +5

Learning to Estimate Hidden Motions with Global Motion Aggregation

2 code implementations ICCV 2021 Shihao Jiang, Dylan Campbell, Yao Lu, Hongdong Li, Richard Hartley

We demonstrate that the optical flow estimates in the occluded regions can be significantly improved without damaging the performance in non-occluded regions.

Optical Flow Estimation

Geometry-Guided Street-View Panorama Synthesis from Satellite Imagery

1 code implementation2 Mar 2021 Yujiao Shi, Dylan Campbell, Xin Yu, Hongdong Li

Specifically, we observe that when a 3D point in the real world is visible in both views, there is a deterministic mapping between the projected points in the two-view images given the height information of this 3D point.

Image Generation

Solving the Blind Perspective-n-Point Problem End-To-End With Robust Differentiable Geometric Optimization

2 code implementations ECCV 2020 Dylan Campbell, Liu Liu, Stephen Gould

We instead propose the first fully end-to-end trainable network for solving the blind PnP problem efficiently and globally, that is, without the need for pose priors.

Where am I looking at? Joint Location and Orientation Estimation by Cross-View Matching

1 code implementation CVPR 2020 Yujiao Shi, Xin Yu, Dylan Campbell, Hongdong Li

Cross-view geo-localization is the problem of estimating the position and orientation (latitude, longitude and azimuth angle) of a camera at ground level given a large-scale database of geo-tagged aerial (e. g., satellite) images.

Learning 2D-3D Correspondences To Solve The Blind Perspective-n-Point Problem

1 code implementation15 Mar 2020 Liu Liu, Dylan Campbell, Hongdong Li, Dingfu Zhou, Xibin Song, Ruigang Yang

Conventional absolute camera pose via a Perspective-n-Point (PnP) solver often assumes that the correspondences between 2D image pixels and 3D points are given.

Joint Unsupervised Learning of Optical Flow and Egomotion with Bi-Level Optimization

no code implementations26 Feb 2020 Shihao Jiang, Dylan Campbell, Miaomiao Liu, Stephen Gould, Richard Hartley

We address the problem of joint optical flow and camera motion estimation in rigid scenes by incorporating geometric constraints into an unsupervised deep learning framework.

Motion Estimation Optical Flow Estimation

Transductive Zero-Shot Learning for 3D Point Cloud Classification

1 code implementation16 Dec 2019 Ali Cheraghian, Shafin Rahman, Dylan Campbell, Lars Petersson

This paper extends, for the first time, transductive Zero-Shot Learning (ZSL) and Generalized Zero-Shot Learning (GZSL) approaches to the domain of 3D point cloud classification.

3D Point Cloud Classification Classification +4

Deep Declarative Networks: A New Hope

1 code implementation11 Sep 2019 Stephen Gould, Richard Hartley, Dylan Campbell

We show how these declarative processing nodes can be implemented in the popular PyTorch deep learning software library allowing declarative and imperative nodes to co-exist within the same network.

Point Cloud Classification

The Alignment of the Spheres: Globally-Optimal Spherical Mixture Alignment for Camera Pose Estimation

no code implementations CVPR 2019 Dylan Campbell, Lars Petersson, Laurent Kneip, Hongdong Li, Stephen Gould

Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications.

Pose Estimation

Globally-Optimal Inlier Set Maximisation for Simultaneous Camera Pose and Feature Correspondence

no code implementations ICCV 2017 Dylan Campbell, Lars Petersson, Laurent Kneip, Hongdong Li

Estimating the 6-DoF pose of a camera from a single image relative to a pre-computed 3D point-set is an important task for many computer vision applications.

Pose Estimation

Go-ICP: A Globally Optimal Solution to 3D ICP Point-Set Registration

no code implementations11 May 2016 Jiaolong Yang, Hongdong Li, Dylan Campbell, Yunde Jia

The evaluation demonstrates that the proposed method is able to produce reliable registration results regardless of the initialization.

Image to Point Cloud Registration

GOGMA: Globally-Optimal Gaussian Mixture Alignment

no code implementations CVPR 2016 Dylan Campbell, Lars Petersson

Gaussian mixture alignment is a family of approaches that are frequently used for robustly solving the point-set registration problem.

An Adaptive Data Representation for Robust Point-Set Registration and Merging

1 code implementation ICCV 2015 Dylan Campbell, Lars Petersson

This paper presents a framework for rigid point-set registration and merging using a robust continuous data representation.

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