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Despoina Paschalidou

15 accepted papers

2026

Motion Attribution for Video Generation

ICML 2026oral

Despite the rapid progress of video generation models, the role of data in influencing motion is poorly understood. We present Motive (MOTIon attribution for Video gEneration), a motion-centric, gradient-based data attribution framework that scales to modern, large, high-quality video datasets and m…

Cited by 2SourceScholar
2024

CAD: Photorealistic 3D Generation via Adversarial Distillation

CVPR 2024poster

The increased demand for 3D data in AR/VR robotics and gaming applications gave rise to powerful generative pipelines capable of synthesizing high-quality 3D objects. Most of these models rely on the Score Distillation Sampling (SDS) algorithm to optimize a 3D representation such that the rendered i…

Cited by 13SourcePDFScholar
2024

CurveCloudNet: Processing Point Clouds with 1D Structure

CVPR 2024poster

Modern depth sensors such as LiDAR operate by sweeping laser-beams across the scene resulting in a point cloud with notable 1D curve-like structures. In this work we introduce a new point cloud processing scheme and backbone called CurveCloudNet which takes advantage of the curve-like structure inhe…

2024

MultiPhys: Multi-Person Physics-aware 3D Motion Estimation

CVPR 2024poster

We introduce MultiPhys a method designed for recovering multi-person motion from monocular videos. Our focus lies in capturing coherent spatial placement between pairs of individuals across varying degrees of engagement. MultiPhys being physically aware exhibits robustness to jittering and occlusion…

Cited by 5SourcePDFScholar
2023

ALTO: Alternating Latent Topologies for Implicit 3D Reconstruction

CVPR 2023poster

This work introduces alternating latent topologies (ALTO) for high-fidelity reconstruction of implicit 3D surfaces from noisy point clouds. Previous work identifies that the spatial arrangement of latent encodings is important to recover detail. One school of thought is to encode a latent vector for…

Cited by 35SourcePDFScholar
2023

CC3D: Layout-Conditioned Generation of Compositional 3D Scenes

ICCV 2023poster

In this work, we introduce CC3D, a conditional generative model that synthesizes complex 3D scenes conditioned on 2D semantic scene layouts, trained using single-view images. Different from most existing 3D GANs that limit their applicability to aligned single objects, we focus on generating complex…

Cited by 44PDFScholar
2023

COPILOT: Human-Environment Collision Prediction and Localization from Egocentric Videos

ICCV 2023poster

The ability to forecast human-environment collisions from egocentric observations is vital to enable collision avoidance in applications such as VR, AR, and wearable assistive robotics. In this work, we introduce the challenging problem of predicting collisions in diverse environments from multi-vie…

Cited by 3PDFcodeScholar
2023

Generating Part-Aware Editable 3D Shapes Without 3D Supervision

CVPR 2023poster

Impressive progress in generative models and implicit representations gave rise to methods that can generate 3D shapes of high quality. However, being able to locally control and edit shapes is another essential property that can unlock several content creation applications. Local control can be ach…

2021

ATISS: Autoregressive Transformers for Indoor Scene Synthesis

NeurIPS 2021poster

The ability to synthesize realistic and diverse indoor furniture layouts automatically or based on partial input, unlocks many applications, from better interactive 3D tools to data synthesis for training and simulation. In this paper, we present ATISS, a novel autoregressive transformer architectur…

2021

Neural Parts: Learning Expressive 3D Shape Abstractions With Invertible Neural Networks

CVPR 2021poster

Impressive progress in 3D shape extraction led to representations that can capture object geometries with high fidelity. In parallel, primitive-based methods seek to represent objects as semantically consistent part arrangements. However, due to the simplicity of existing primitive representations,…

Cited by 123PDFcodeScholar
2020

Learning Unsupervised Hierarchical Part Decomposition of 3D Objects From a Single RGB Image

CVPR 2020poster

Humans perceive the 3D world as a set of distinct objects that are characterized by various low-level (geometry, reflectance) and high-level (connectivity, adjacency, symmetry) properties. Recent methods based on convolutional neural networks (CNNs) demonstrated impressive progress in 3D reconstruct…

Cited by 130PDFcodeScholar
2019

PointFlowNet: Learning Representations for Rigid Motion Estimation From Point Clouds

CVPR 2019poster

Despite significant progress in image-based 3D scene flow estimation, the performance of such approaches has not yet reached the fidelity required by many applications. Simultaneously, these applications are often not restricted to image-based estimation: laser scanners provide a popular alternative…

Cited by 140PDFcodeScholar
2019

Superquadrics Revisited: Learning 3D Shape Parsing Beyond Cuboids

CVPR 2019poster

Abstracting complex 3D shapes with parsimonious part-based representations has been a long standing goal in computer vision. This paper presents a learning-based solution to this problem which goes beyond the traditional 3D cuboid representation by exploiting superquadrics as atomic elements. We dem…

Cited by 0PDFcodeScholar
2018

RayNet: Learning Volumetric 3D Reconstruction With Ray Potentials

CVPR 2018poster

In this paper, we consider the problem of reconstructing a dense 3D model using images captured from different views. Recent methods based on convolutional neural networks (CNN) allow learning the entire task from data. However, they do not incorporate the physics of image formation such as perspect…