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Raphael Gontijo Lopes

5 accepted papers

2022

Robust Fine-Tuning of Zero-Shot Models

CVPR 2022oral

Large pre-trained models such as CLIP or ALIGN offer consistent accuracy across a range of data distributions when performing zero-shot inference (i.e., without fine-tuning on a specific dataset). Although existing fine-tuning methods substantially improve accuracy on a given target distribution, th…

Cited by 764PDFcodeScholar
2020

Naive-Student: Leveraging Semi-Supervised Learning in Video Sequences for Urban Scene Segmentation

ECCV 2020poster

Supervised learning in large discriminative models is a mainstay for modern computer vision. Such an approach necessitates investing in large-scale human-annotated datasets for achieving state-of-the-art results. In turn, the efficacy of supervised learning may be limited by the size of the human an…

2019

A Fourier Perspective on Model Robustness in Computer Vision

NeurIPS 2019poster

Achieving robustness to distributional shift is a longstanding and challenging goal of computer vision. Data augmentation is a commonly used approach for improving robustness, however robustness gains are typically not uniform across corruption types. Indeed increasing performance in the presence of…

2019

A Learned Representation for Scalable Vector Graphics

ICCV 2019poster

Dramatic advances in generative models have resulted in near photographic quality for artificially rendered faces, animals and other objects in the natural world. In spite of such advances, a higher level understanding of vision and imagery does not arise from exhaustively modeling an object, but in…

Cited by 137PDFcodeScholar
2019

End-to-end Audio Visual Scene-aware Dialog Using Multimodal Attention-based Video Features

ICASSP 2019accepted

In order for machines interacting with the real world to have conversations with users about the objects and events around them, they need to understand dynamic audiovisual scenes. The recent revolution of neural network models allows us to combine various modules into a single end-to-end differenti…

Cited by 0SourceScholar