Search Results for author: Alexander Black

Found 7 papers, 1 papers with code

VIXEN: Visual Text Comparison Network for Image Difference Captioning

no code implementations29 Feb 2024 Alexander Black, Jing Shi, Yifei Fan, Tu Bui, John Collomosse

We present VIXEN - a technique that succinctly summarizes in text the visual differences between a pair of images in order to highlight any content manipulation present.

Language Modelling Large Language Model +1

ALADIN-NST: Self-supervised disentangled representation learning of artistic style through Neural Style Transfer

no code implementations12 Apr 2023 Dan Ruta, Gemma Canet Tarres, Alexander Black, Andrew Gilbert, John Collomosse

Representation learning aims to discover individual salient features of a domain in a compact and descriptive form that strongly identifies the unique characteristics of a given sample respective to its domain.

Descriptive Disentanglement +1

VADER: Video Alignment Differencing and Retrieval

no code implementations ICCV 2023 Alexander Black, Simon Jenni, Tu Bui, Md. Mehrab Tanjim, Stefano Petrangeli, Ritwik Sinha, Viswanathan Swaminathan, John Collomosse

We propose VADER, a spatio-temporal matching, alignment, and change summarization method to help fight misinformation spread via manipulated videos.

Misinformation Retrieval +2

Audio-Visual Contrastive Learning with Temporal Self-Supervision

no code implementations15 Feb 2023 Simon Jenni, Alexander Black, John Collomosse

We propose a self-supervised learning approach for videos that learns representations of both the RGB frames and the accompanying audio without human supervision.

Action Recognition Audio Classification +3

SImProv: Scalable Image Provenance Framework for Robust Content Attribution

no code implementations28 Jun 2022 Alexander Black, Tu Bui, Simon Jenni, Zhifei Zhang, Viswanathan Swaminanthan, John Collomosse

We present SImProv - a scalable image provenance framework to match a query image back to a trusted database of originals and identify possible manipulations on the query.

Re-Ranking Retrieval

VPN: Video Provenance Network for Robust Content Attribution

no code implementations21 Sep 2021 Alexander Black, Tu Bui, Simon Jenni, Vishy Swaminathan, John Collomosse

We present VPN - a content attribution method for recovering provenance information from videos shared online.

Contrastive Learning

Compositional Sketch Search

1 code implementation15 Jun 2021 Alexander Black, Tu Bui, Long Mai, Hailin Jin, John Collomosse

We present an algorithm for searching image collections using free-hand sketches that describe the appearance and relative positions of multiple objects.

Position Quantization +2

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