Search Results for author: David Forsyth

Found 53 papers, 16 papers with code

Improved Convex Decomposition with Ensembling and Boolean Primitives

no code implementations29 May 2024 Vaibhav Vavilala, Florian Kluger, Seemandhar Jain, Bodo Rosenhahn, David Forsyth

Describing a scene in terms of primitives -- geometrically simple shapes that offer a parsimonious but accurate abstraction of structure -- is an established vision problem.

regression Scene Segmentation

Denoising Monte Carlo Renders with Diffusion Models

no code implementations30 Mar 2024 Vaibhav Vavilala, Rahul Vasanth, David Forsyth

Learned methods for restoring low fidelity renders are highly developed, because suppressing render noise means one can save compute and use fast renders with few rays per pixel.

Denoising

HarmBench: A Standardized Evaluation Framework for Automated Red Teaming and Robust Refusal

1 code implementation6 Feb 2024 Mantas Mazeika, Long Phan, Xuwang Yin, Andy Zou, Zifan Wang, Norman Mu, Elham Sakhaee, Nathaniel Li, Steven Basart, Bo Li, David Forsyth, Dan Hendrycks

Automated red teaming holds substantial promise for uncovering and mitigating the risks associated with the malicious use of large language models (LLMs), yet the field lacks a standardized evaluation framework to rigorously assess new methods.

Preserving Image Properties Through Initializations in Diffusion Models

no code implementations4 Jan 2024 Jeffrey Zhang, Shao-Yu Chang, Kedan Li, David Forsyth

The usual practice of training the denoiser with a very noisy image and starting inference with a sample of pure noise leads to inconsistent generated images during inference.

Improving Equivariance in State-of-the-Art Supervised Depth and Normal Predictors

1 code implementation ICCV 2023 Yuanyi Zhong, Anand Bhattad, Yu-Xiong Wang, David Forsyth

Dense depth and surface normal predictors should possess the equivariant property to cropping-and-resizing -- cropping the input image should result in cropping the same output image.

Data Augmentation

Convex Decomposition of Indoor Scenes

no code implementations ICCV 2023 Vaibhav Vavilala, David Forsyth

Our method uses a learned regression procedure to parse a scene into a fixed number of convexes from RGBD input, and can optionally accept segmentations to improve the decomposition.

Blocks2World: Controlling Realistic Scenes with Editable Primitives

no code implementations7 Jul 2023 Vaibhav Vavilala, Seemandhar Jain, Rahul Vasanth, Anand Bhattad, David Forsyth

We present Blocks2World, a novel method for 3D scene rendering and editing that leverages a two-step process: convex decomposition of images and conditioned synthesis.

Data Augmentation

UrbanIR: Large-Scale Urban Scene Inverse Rendering from a Single Video

no code implementations15 Jun 2023 Zhi-Hao Lin, Bohan Liu, Yi-Ting Chen, Kuan-Sheng Chen, David Forsyth, Jia-Bin Huang, Anand Bhattad, Shenlong Wang

We present UrbanIR (Urban Scene Inverse Rendering), a new inverse graphics model that enables realistic, free-viewpoint renderings of scenes under various lighting conditions with a single video.

Inverse Rendering

Wearing the Same Outfit in Different Ways -- A Controllable Virtual Try-on Method

no code implementations29 Nov 2022 Kedan Li, Jeffrey Zhang, Shao-Yu Chang, David Forsyth

However, no current method can both control how the garment is worn -- including tuck or untuck, opened or closed, high or low on the waist, etc.. -- and generate realistic images that accurately preserve the properties of the original garment.

Virtual Try-on

How Would The Viewer Feel? Estimating Wellbeing From Video Scenarios

1 code implementation18 Oct 2022 Mantas Mazeika, Eric Tang, Andy Zou, Steven Basart, Jun Shern Chan, Dawn Song, David Forsyth, Jacob Steinhardt, Dan Hendrycks

In experiments, we show how video models that are primarily trained to recognize actions and find contours of objects can be repurposed to understand human preferences and the emotional content of videos.

Video Understanding

How to Steer Your Adversary: Targeted and Efficient Model Stealing Defenses with Gradient Redirection

1 code implementation28 Jun 2022 Mantas Mazeika, Bo Li, David Forsyth

To meet these challenges, we present a new approach to model stealing defenses called gradient redirection.

Long Scale Error Control in Low Light Image and Video Enhancement Using Equivariance

no code implementations2 Jun 2022 Sara Aghajanzadeh, David Forsyth

In this paper, we show that respecting equivariance -- the color of a restored pixel should be the same, however the image is cropped -- produces real improvements over the state of the art for restoration.

Quantization Video Enhancement +1

StyleGAN of All Trades: Image Manipulation with Only Pretrained StyleGAN

1 code implementation2 Nov 2021 Min Jin Chong, Hsin-Ying Lee, David Forsyth

Recently, StyleGAN has enabled various image manipulation and editing tasks thanks to the high-quality generation and the disentangled latent space.

Image Manipulation Image-to-Image Translation +1

Controlled GAN-Based Creature Synthesis via a Challenging Game Art Dataset -- Addressing the Noise-Latent Trade-Off

no code implementations19 Aug 2021 Vaibhav Vavilala, David Forsyth

While noise inputs to StyleGAN2 are essential for good synthesis, we find that coarse-scale noise interferes with latent variables on this dataset because both control long-scale image effects.

Retrieve in Style: Unsupervised Facial Feature Transfer and Retrieval

1 code implementation ICCV 2021 Min Jin Chong, Wen-Sheng Chu, Abhishek Kumar, David Forsyth

We present Retrieve in Style (RIS), an unsupervised framework for facial feature transfer and retrieval on real images.

Disentanglement Retrieval

Toward Accurate and Realistic Virtual Try-on Through Shape Matching and Multiple Warps

no code implementations22 Mar 2020 Kedan Li, Min Jin Chong, Jingen Liu, David Forsyth

However, obtaining a realistic image is challenging because the kinematics of garments is complex and because outline, texture, and shading cues in the image reveal errors to human viewers.

Image Generation Virtual Try-on

Exposing and Correcting the Gender Bias in Image Captioning Datasets and Models

no code implementations2 Dec 2019 Shruti Bhargava, David Forsyth

Interestingly, the predictions by this model on images with no humans, are also visibly different from the one trained on gendered captions.

Gender Classification Image Captioning

Effectively Unbiased FID and Inception Score and where to find them

1 code implementation CVPR 2020 Min Jin Chong, David Forsyth

In turn, this effectively bias-free estimate requires good estimates of scores with a finite number of samples.

Improving Style Transfer with Calibrated Metrics

1 code implementation21 Oct 2019 Mao-Chuang Yeh, Shuai Tang, Anand Bhattad, Chuhang Zou, David Forsyth

Style transfer methods produce a transferred image which is a rendering of a content image in the manner of a style image.

Style Transfer

Counterfactual Depth from a Single RGB Image

1 code implementation3 Sep 2019 Theerasit Issaranon, Chuhang Zou, David Forsyth

We describe a method that predicts, from a single RGB image, a depth map that describes the scene when a masked object is removed - we call this "counterfactual depth" that models hidden scene geometry together with the observations.

counterfactual Decoder

Coherent and Controllable Outfit Generation

no code implementations17 Jun 2019 Kedan Li, Chen Liu, David Forsyth

A user study suggests that people understand the match between the queries and the outfits produced by our method.

General Classification

Max-Sliced Wasserstein Distance and its use for GANs

no code implementations CVPR 2019 Ishan Deshpande, Yuan-Ting Hu, Ruoyu Sun, Ayis Pyrros, Nasir Siddiqui, Sanmi Koyejo, Zhizhen Zhao, David Forsyth, Alexander Schwing

Generative adversarial nets (GANs) and variational auto-encoders have significantly improved our distribution modeling capabilities, showing promise for dataset augmentation, image-to-image translation and feature learning.

Image-to-Image Translation Translation

An Approximate Shading Model with Detail Decomposition for Object Relighting

no code implementations20 Apr 2018 Zicheng Liao, Kevin Karsch, Hongyi Zhang, David Forsyth

We present an object relighting system that allows an artist to select an object from an image and insert it into a target scene.

Object

Learning Type-Aware Embeddings for Fashion Compatibility

2 code implementations ECCV 2018 Mariya I. Vasileva, Bryan A. Plummer, Krishna Dusad, Shreya Rajpal, Ranjitha Kumar, David Forsyth

Outfits in online fashion data are composed of items of many different types (e. g. top, bottom, shoes) that share some stylistic relationship with one another.

Vocal Bursts Type Prediction

Detecting Anomalous Faces with 'No Peeking' Autoencoders

no code implementations15 Feb 2018 Anand Bhattad, Jason Rock, David Forsyth

We describe a method for detecting an anomalous face image that meets these requirements.

Standard detectors aren't (currently) fooled by physical adversarial stop signs

no code implementations9 Oct 2017 Jiajun Lu, Hussein Sibai, Evan Fabry, David Forsyth

Finally, an adversarial pattern on a physical object that could fool a detector would have to be adversarial in the face of a wide family of parametric distortions (scale; view angle; box shift inside the detector; illumination; and so on).

Adversarial Attack

NO Need to Worry about Adversarial Examples in Object Detection in Autonomous Vehicles

no code implementations12 Jul 2017 Jiajun Lu, Hussein Sibai, Evan Fabry, David Forsyth

Instead, a trained neural network classifies most of the pictures taken from different distances and angles of a perturbed image correctly.

Autonomous Vehicles object-detection +1

SafetyNet: Detecting and Rejecting Adversarial Examples Robustly

no code implementations ICCV 2017 Jiajun Lu, Theerasit Issaranon, David Forsyth

SceneProof applies to images captured with depth maps (RGBD images) and checks if a pair of image and depth map is consistent.

Learning Diverse Image Colorization

1 code implementation CVPR 2017 Aditya Deshpande, Jiajun Lu, Mao-Chuang Yeh, Min Jin Chong, David Forsyth

Finally, we build a conditional model for the multi-modal distribution between grey-level image and the color field embeddings.

Colorization Decoder +3

Authoring image decompositions with generative models

no code implementations5 Dec 2016 Jason Rock, Theerasit Issaranon, Aditya Deshpande, David Forsyth

Instead, we can learn to decompose an image into layers that are "like this" by authoring generative models for each layer using proxy examples that capture the Platonic ideal (Mondrian images for albedo; rendered 3D primitives for shading; material swatches for shading detail).

CDVAE: Co-embedding Deep Variational Auto Encoder for Conditional Variational Generation

no code implementations1 Dec 2016 Jiajun Lu, Aditya Deshpande, David Forsyth

Such a model is difficult to train, because we do not usually have training data containing many different shadings for the same image.

Image Relighting

Learning to Localize Little Landmarks

no code implementations CVPR 2016 Saurabh Singh, Derek Hoiem, David Forsyth

We describe a method to find such landmarks by finding a sequence of latent landmarks, each with a prediction model.

Swapout: Learning an ensemble of deep architectures

no code implementations NeurIPS 2016 Saurabh Singh, Derek Hoiem, David Forsyth

When viewed as a regularization method swapout not only inhibits co-adaptation of units in a layer, similar to dropout, but also across network layers.

An Approximate Shading Model for Object Relighting

no code implementations CVPR 2015 Zicheng Liao, Kevin Karsch, David Forsyth

With this object model, we build an object relighting system that allows an artist to select an object from an image and insert it into a 3D scene.

Object

Learning a Sequential Search for Landmarks

no code implementations CVPR 2015 Saurabh Singh, Derek Hoiem, David Forsyth

We propose a general method to find landmarks in images of objects using both appearance and spatial context.

Sparse Depth Super Resolution

no code implementations CVPR 2015 Jiajun Lu, David Forsyth

We describe a method to produce detailed high resolution depth maps from aggressively subsampled depth measurements.

Image Segmentation Semantic Segmentation +1

Fast Template Evaluation with Vector Quantization

no code implementations NeurIPS 2013 Mohammad Amin Sadeghi, David Forsyth

Our procedure allows speed and accuracy to be traded off in two ways: by choosing the number of Vector Quantization levels, and by choosing to rescore windows or not.

object-detection Object Detection +1

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