Search Results for author: Jean-François Lalonde

Found 40 papers, 15 papers with code

Domain Agnostic Image-to-image Translation using Low-Resolution Conditioning

no code implementations8 May 2023 Mohamed Abid, Arman Afrasiyabi, Ihsen Hedhli, Jean-François Lalonde, Christian Gagné

Conditioned on a target image, such methods extract the target style and combine it with the source image content, keeping coherence between the domains.

Image-to-Image Translation Translation

EverLight: Indoor-Outdoor Editable HDR Lighting Estimation

no code implementations ICCV 2023 Mohammad Reza Karimi Dastjerdi, Jonathan Eisenmann, Yannick Hold-Geoffroy, Jean-François Lalonde

In this work, we propose to bridge the gap between these recent trends in the literature, and propose a method which combines a parametric light model with 360{\deg} panoramas, ready to use as HDRI in rendering engines.

Lighting Estimation

Beyond the Pixel: a Photometrically Calibrated HDR Dataset for Luminance and Color Prediction

no code implementations ICCV 2023 Christophe Bolduc, Justine Giroux, Marc Hébert, Claude Demers, Jean-François Lalonde

The resulting dataset is a rich representation of indoor scenes which displays a wide range of illuminance and color, and varied types of light sources.

Robust Unsupervised StyleGAN Image Restoration

1 code implementation CVPR 2023 Yohan Poirier-Ginter, Jean-François Lalonde

GAN-based image restoration inverts the generative process to repair images corrupted by known degradations.

Denoising Image Restoration

Lens Parameter Estimation for Realistic Depth of Field Modeling

no code implementations ICCV 2023 Dominique Piché-Meunier, Yannick Hold-Geoffroy, Jianming Zhang, Jean-François Lalonde

Instead, we go further and propose to use a lens-based representation that models the depth of field using two parameters: the blur factor and focus disparity.

The Differentiable Lens: Compound Lens Search over Glass Surfaces and Materials for Object Detection

1 code implementation CVPR 2023 Geoffroi Côté, Fahim Mannan, Simon Thibault, Jean-François Lalonde, Felix Heide

Recently, joint optimization approaches that design lenses alongside other components of the image acquisition and processing pipeline -- notably, downstream neural networks -- have achieved improved imaging quality or better performance on vision tasks.

object-detection Object Detection

Editable Indoor Lighting Estimation

1 code implementation8 Nov 2022 Henrique Weber, Mathieu Garon, Jean-François Lalonde

We present a method for estimating lighting from a single perspective image of an indoor scene.

Lighting Estimation

Casual Indoor HDR Radiance Capture from Omnidirectional Images

no code implementations16 Aug 2022 Pulkit Gera, Mohammad Reza Karimi Dastjerdi, Charles Renaud, P. J. Narayanan, Jean-François Lalonde

We present PanoHDR-NeRF, a neural representation of the full HDR radiance field of an indoor scene, and a pipeline to capture it casually, without elaborate setups or complex capture protocols.

Robust Scene Inference under Noise-Blur Dual Corruptions

no code implementations24 Jul 2022 Bhavya Goyal, Jean-François Lalonde, Yin Li, Mohit Gupta

This creates a trade-off between these two kinds of image degradations: motion blur (due to long exposure) vs. noise (due to short exposure), also referred as a dual image corruption pair in this paper.

Image Classification object-detection +1

Overparameterization Improves StyleGAN Inversion

no code implementations12 May 2022 Yohan Poirier-Ginter, Alexandre Lessard, Ryan Smith, Jean-François Lalonde

We show that this allows us to obtain near-perfect image reconstruction without the need for encoders nor for altering the latent space after training.

Image Reconstruction

Guided Co-Modulated GAN for 360° Field of View Extrapolation

no code implementations15 Apr 2022 Mohammad Reza Karimi Dastjerdi, Yannick Hold-Geoffroy, Jonathan Eisenmann, Siavash Khodadadeh, Jean-François Lalonde

We propose a method to extrapolate a 360{\deg} field of view from a single image that allows for user-controlled synthesis of the out-painted content.

Image Generation

ManiFest: Manifold Deformation for Few-shot Image Translation

1 code implementation26 Nov 2021 Fabio Pizzati, Jean-François Lalonde, Raoul de Charette

To enforce feature consistency, our framework learns a style manifold between source and proxy anchor domains (assumed to be composed of large numbers of images).

Image-to-Image Translation Translation

Image-to-Image Translation with Low Resolution Conditioning

1 code implementation23 Jul 2021 Mohamed Abderrahmen Abid, Ihsen Hedhli, Jean-François Lalonde, Christian Gagne

This differs from previous methods that focus on translating a given image style into a target content, our translation approach being able to simultaneously imitate the style and merge the structural information of the LR target.

Image-to-Image Translation Translation

Mixture-based Feature Space Learning for Few-shot Image Classification

1 code implementation ICCV 2021 Arman Afrasiyabi, Jean-François Lalonde, Christian Gagné

In contrast, we propose to model base classes with mixture models by simultaneously training the feature extractor and learning the mixture model parameters in an online manner.

Clustering Few-Shot Image Classification +2

Deep SVBRDF Estimation on Real Materials

no code implementations8 Oct 2020 Louis-Philippe Asselin, Denis Laurendeau, Jean-François Lalonde

Recent work has demonstrated that deep learning approaches can successfully be used to recover accurate estimates of the spatially-varying BRDF (SVBRDF) of a surface from as little as a single image.

SVBRDF Estimation

Rain rendering for evaluating and improving robustness to bad weather

no code implementations6 Sep 2020 Maxime Tremblay, Shirsendu Sukanta Halder, Raoul de Charette, Jean-François Lalonde

In this context, we present a rain rendering pipeline that enables the systematic evaluation of common computer vision algorithms to controlled amounts of rain.

Depth Estimation Object +4

RGB-D-E: Event Camera Calibration for Fast 6-DOF Object Tracking

1 code implementation9 Jun 2020 Etienne Dubeau, Mathieu Garon, Benoit Debaque, Raoul de Charette, Jean-François Lalonde

In this paper, we propose, for the first time, to use an event-based camera to increase the speed of 3D object tracking in 6 degrees of freedom.

3D Object Tracking Camera Calibration +2

Input Dropout for Spatially Aligned Modalities

1 code implementation7 Feb 2020 Sébastien de Blois, Mathieu Garon, Christian Gagné, Jean-François Lalonde

Computer vision datasets containing multiple modalities such as color, depth, and thermal properties are now commonly accessible and useful for solving a wide array of challenging tasks.

Object Tracking Pedestrian Detection

Deep Template-based Object Instance Detection

1 code implementation26 Nov 2019 Jean-Philippe Mercier, Mathieu Garon, Philippe Giguère, Jean-François Lalonde

In this context, we propose a generic 2D object instance detection approach that uses example viewpoints of the target object at test time to retrieve its 2D location in RGB images, without requiring any additional training (i. e. fine-tuning) step.

Object object-detection +2

Physics-Based Rendering for Improving Robustness to Rain

no code implementations ICCV 2019 Shirsendu Sukanta Halder, Jean-François Lalonde, Raoul de Charette

Our rendering relies on a physical particle simulator, an estimation of the scene lighting and an accurate rain photometric modeling to augment images with arbitrary amount of realistic rain or fog.

Object object-detection +3

All-Weather Deep Outdoor Lighting Estimation

no code implementations CVPR 2019 Jinsong Zhang, Kalyan Sunkavalli, Yannick Hold-Geoffroy, Sunil Hadap, Jonathan Eisenmann, Jean-François Lalonde

We use this network to label a large-scale dataset of LDR panoramas with lighting parameters and use them to train our single image outdoor lighting estimation network.

Lighting Estimation

Learning Physics-guided Face Relighting under Directional Light

no code implementations CVPR 2020 Thomas Nestmeyer, Jean-François Lalonde, Iain Matthews, Andreas M. Lehrmann

Relighting is an essential step in realistically transferring objects from a captured image into another environment.

Hyperparameter Optimization in Black-box Image Processing using Differentiable Proxies

1 code implementation SIGGRAPH 2019 2019 Ethan Tseng, Felix Yu, Yuting Yang, Fahim Mannan, Karl St. Arnaud, Derek Nowrouzezahrai, Jean-François Lalonde, Felix Heide

We present a fully automatic system to optimize the parameters of black-box hardware and software image processing pipelines according to any arbitrary (i. e., application-specific) metric.

Hyperparameter Optimization Image Denoising +3

Deep Photovoltaic Nowcasting

no code implementations15 Oct 2018 Jinsong Zhang, Rodrigo Verschae, Shohei Nobuhara, Jean-François Lalonde

Our experiments reveal that the MLP network, already used similarly in previous work, achieves an RMSE skill score of 7% over the commonly-used persistence baseline on the 1-minute future photovoltaic power prediction task.

Management

Learning to Estimate Indoor Lighting from 3D Objects

1 code implementation 3DV 2018 - International Conference on 3D Vision 2018 Henrique Weber, Donald Prévost, Jean-François Lalonde

To achieve this, we developed a deep learning method that is able to encode the latent space of indoor lighting using few parameters and that is trained on a database of environment maps.

Single Day Outdoor Photometric Stereo

no code implementations28 Mar 2018 Yannick Hold-Geoffroy, Paulo F. U. Gotardo, Jean-François Lalonde

Our analysis reveals that partially cloudy days improve the conditioning of the outdoor PS problem while sunny days do not allow the unambiguous recovery of surface normals from photometric cues alone.

A Framework for Evaluating 6-DOF Object Trackers

1 code implementation ECCV 2018 Mathieu Garon, Denis Laurendeau, Jean-François Lalonde

We present a challenging and realistic novel dataset for evaluating 6-DOF object tracking algorithms.

Object Object Tracking

A Perceptual Measure for Deep Single Image Camera Calibration

no code implementations CVPR 2018 Yannick Hold-Geoffroy, Kalyan Sunkavalli, Jonathan Eisenmann, Matt Fisher, Emiliano Gambaretto, Sunil Hadap, Jean-François Lalonde

This network is trained using automatically generated samples from a large-scale panorama dataset, and considerably outperforms other methods, including recent deep learning-based approaches, in terms of standard L2 error.

Camera Calibration Image Retrieval +1

Learning to Predict Indoor Illumination from a Single Image

no code implementations1 Apr 2017 Marc-André Gardner, Kalyan Sunkavalli, Ersin Yumer, Xiaohui Shen, Emiliano Gambaretto, Christian Gagné, Jean-François Lalonde

We propose an automatic method to infer high dynamic range illumination from a single, limited field-of-view, low dynamic range photograph of an indoor scene.

Lighting Estimation

Deep 6-DOF Tracking

no code implementations28 Mar 2017 Mathieu Garon, Jean-François Lalonde

We present a temporal 6-DOF tracking method which leverages deep learning to achieve state-of-the-art performance on challenging datasets of real world capture.

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