Search Results for author: Vladimir G. Kim

Found 41 papers, 22 papers with code

One Noise to Rule Them All: Learning a Unified Model of Spatially-Varying Noise Patterns

no code implementations25 Apr 2024 Arman Maesumi, Dylan Hu, Krishi Saripalli, Vladimir G. Kim, Matthew Fisher, Sören Pirk, Daniel Ritchie

Procedural noise is a fundamental component of computer graphics pipelines, offering a flexible way to generate textures that exhibit "natural" random variation.

Data Augmentation Denoising

As-Plausible-As-Possible: Plausibility-Aware Mesh Deformation Using 2D Diffusion Priors

no code implementations28 Nov 2023 Seungwoo Yoo, Kunho Kim, Vladimir G. Kim, Minhyuk Sung

To better preserve the identity of the edited mesh, we fine-tune our 2D diffusion model with LoRA.

Explorable Mesh Deformation Subspaces from Unstructured Generative Models

no code implementations11 Oct 2023 Arman Maesumi, Paul Guerrero, Vladimir G. Kim, Matthew Fisher, Siddhartha Chaudhuri, Noam Aigerman, Daniel Ritchie

Deep generative models of 3D shapes often feature continuous latent spaces that can, in principle, be used to explore potential variations starting from a set of input shapes.

Neural Semantic Surface Maps

no code implementations9 Sep 2023 Luca Morreale, Noam Aigerman, Vladimir G. Kim, Niloy J. Mitra

We present an automated technique for computing a map between two genus-zero shapes, which matches semantically corresponding regions to one another.

Neural Progressive Meshes

no code implementations10 Aug 2023 Yun-Chun Chen, Vladimir G. Kim, Noam Aigerman, Alec Jacobson

The recent proliferation of 3D content that can be consumed on hand-held devices necessitates efficient tools for transmitting large geometric data, e. g., 3D meshes, over the Internet.

TextDeformer: Geometry Manipulation using Text Guidance

1 code implementation26 Apr 2023 William Gao, Noam Aigerman, Thibault Groueix, Vladimir G. Kim, Rana Hanocka

Our key observation is that Jacobians are a representation that favors smoother, large deformations, leading to a global relation between vertices and pixels, and avoiding localized noisy gradients.

DA Wand: Distortion-Aware Selection using Neural Mesh Parameterization

1 code implementation CVPR 2023 Richard Liu, Noam Aigerman, Vladimir G. Kim, Rana Hanocka

We present a neural technique for learning to select a local sub-region around a point which can be used for mesh parameterization.

Segmentation

Self-Supervised Representation Learning for CAD

no code implementations CVPR 2023 Benjamin T. Jones, Michael Hu, Vladimir G. Kim, Adriana Schulz

Assisting design with data-driven machine learning methods is hampered by lack of labeled data in CAD's native format; the parametric boundary representation (B-Rep).

Few-Shot Learning Representation Learning

Learning Joint Surface Atlases

no code implementations13 Jun 2022 Theo Deprelle, Thibault Groueix, Noam Aigerman, Vladimir G. Kim, Mathieu Aubry

We demonstrate that this improves the quality of the learned surface representation, as well as its consistency in a collection of related shapes.

Neural Jacobian Fields: Learning Intrinsic Mappings of Arbitrary Meshes

1 code implementation5 May 2022 Noam Aigerman, Kunal Gupta, Vladimir G. Kim, Siddhartha Chaudhuri, Jun Saito, Thibault Groueix

This paper introduces a framework designed to accurately predict piecewise linear mappings of arbitrary meshes via a neural network, enabling training and evaluating over heterogeneous collections of meshes that do not share a triangulation, as well as producing highly detail-preserving maps whose accuracy exceeds current state of the art.

Neural Convolutional Surfaces

no code implementations CVPR 2022 Luca Morreale, Noam Aigerman, Paul Guerrero, Vladimir G. Kim, Niloy J. Mitra

Our pipeline and architecture are designed so that disentanglement of global geometry from local details is accomplished through optimization, in a completely unsupervised manner.

Disentanglement

Learning Proximal Operators to Discover Multiple Optima

1 code implementation28 Jan 2022 Lingxiao Li, Noam Aigerman, Vladimir G. Kim, Jiajin Li, Kristjan Greenewald, Mikhail Yurochkin, Justin Solomon

We present an end-to-end method to learn the proximal operator of a family of training problems so that multiple local minima can be quickly obtained from initial guesses by iterating the learned operator, emulating the proximal-point algorithm that has fast convergence.

object-detection Object Detection

Möbius Convolutions for Spherical CNNs

1 code implementation28 Jan 2022 Thomas W. Mitchel, Noam Aigerman, Vladimir G. Kim, Michael Kazhdan

M\"obius transformations play an important role in both geometry and spherical image processing - they are the group of conformal automorphisms of 2D surfaces and the spherical equivalent of homographies.

Descriptive Image Segmentation +1

Temporally-Consistent Surface Reconstruction using Metrically-Consistent Atlases

1 code implementation12 Nov 2021 Jan Bednarik, Noam Aigerman, Vladimir G. Kim, Siddhartha Chaudhuri, Shaifali Parashar, Mathieu Salzmann, Pascal Fua

The key to making these correspondences semantically meaningful is to guarantee that the metric tensors computed at corresponding points are as similar as possible.

Surface Reconstruction

AutoMate: A Dataset and Learning Approach for Automatic Mating of CAD Assemblies

no code implementations25 May 2021 Benjamin Jones, Dalton Hildreth, Duowen Chen, Ilya Baran, Vladimir G. Kim, Adriana Schulz

To train our system, we compiled the first large scale dataset of BREP CAD assemblies, which we are releasing along with benchmark mate prediction tasks.

Representation Learning

Temporally-Coherent Surface Reconstruction via Metric-Consistent Atlases

1 code implementation ICCV 2021 Jan Bednarik, Vladimir G. Kim, Siddhartha Chaudhuri, Shaifali Parashar, Mathieu Salzmann, Pascal Fua, Noam Aigerman

We propose a method for the unsupervised reconstruction of a temporally-coherent sequence of surfaces from a sequence of time-evolving point clouds, yielding dense, semantically meaningful correspondences between all keyframes.

Surface Reconstruction

Field Convolutions for Surface CNNs

1 code implementation ICCV 2021 Thomas W. Mitchel, Vladimir G. Kim, Michael Kazhdan

We present a novel surface convolution operator acting on vector fields that is based on a simple observation: instead of combining neighboring features with respect to a single coordinate parameterization defined at a given point, we have every neighbor describe the position of the point within its own coordinate frame.

Descriptive

Joint Learning of 3D Shape Retrieval and Deformation

1 code implementation CVPR 2021 Mikaela Angelina Uy, Vladimir G. Kim, Minhyuk Sung, Noam Aigerman, Siddhartha Chaudhuri, Leonidas Guibas

In fact, we use the embedding space to guide the shape pairs used to train the deformation module, so that it invests its capacity in learning deformations between meaningful shape pairs.

3D Shape Retrieval Retrieval

COALESCE: Component Assembly by Learning to Synthesize Connections

no code implementations5 Aug 2020 Kangxue Yin, Zhiqin Chen, Siddhartha Chaudhuri, Matthew Fisher, Vladimir G. Kim, Hao Zhang

We introduce COALESCE, the first data-driven framework for component-based shape assembly which employs deep learning to synthesize part connections.

Coupling Explicit and Implicit Surface Representations for Generative 3D Modeling

no code implementations ECCV 2020 Omid Poursaeed, Matthew Fisher, Noam Aigerman, Vladimir G. Kim

We propose a novel neural architecture for representing 3D surfaces, which harnesses two complementary shape representations: (i) an explicit representation via an atlas, i. e., embeddings of 2D domains into 3D; (ii) an implicit-function representation, i. e., a scalar function over the 3D volume, with its levels denoting surfaces.

Surface Reconstruction

Neural Subdivision

2 code implementations4 May 2020 Hsueh-Ti Derek Liu, Vladimir G. Kim, Siddhartha Chaudhuri, Noam Aigerman, Alec Jacobson

During inference, our method takes a coarse triangle mesh as input and recursively subdivides it to a finer geometry by applying the fixed topological updates of Loop Subdivision, but predicting vertex positions using a neural network conditioned on the local geometry of a patch.

Affinity Graph Supervision for Visual Recognition

no code implementations CVPR 2020 Chu Wang, Babak Samari, Vladimir G. Kim, Siddhartha Chaudhuri, Kaleem Siddiqi

Affinity graphs are widely used in deep architectures, including graph convolutional neural networks and attention networks.

Image Classification

Neural Cages for Detail-Preserving 3D Deformations

1 code implementation CVPR 2020 Wang Yifan, Noam Aigerman, Vladimir G. Kim, Siddhartha Chaudhuri, Olga Sorkine-Hornung

The goal of our method is to warp a source shape to match the general structure of a target shape, while preserving the surface details of the source.

Neural Puppet: Generative Layered Cartoon Characters

no code implementations4 Oct 2019 Omid Poursaeed, Vladimir G. Kim, Eli Shechtman, Jun Saito, Serge Belongie

We capture these subtle changes by applying an image translation network to refine the mesh rendering, providing an end-to-end model to generate new animations of a character with high visual quality.

Learning elementary structures for 3D shape generation and matching

3 code implementations NeurIPS 2019 Theo Deprelle, Thibault Groueix, Matthew Fisher, Vladimir G. Kim, Bryan C. Russell, Mathieu Aubry

We propose to represent shapes as the deformation and combination of learnable elementary 3D structures, which are primitives resulting from training over a collection of shape.

Ranked #8 on 3D Dense Shape Correspondence on SHREC'19 (using extra training data)

3D Dense Shape Correspondence 3D Shape Generation +1

Deep Parametric Shape Predictions using Distance Fields

1 code implementation CVPR 2020 Dmitriy Smirnov, Matthew Fisher, Vladimir G. Kim, Richard Zhang, Justin Solomon

Many tasks in graphics and vision demand machinery for converting shapes into consistent representations with sparse sets of parameters; these representations facilitate rendering, editing, and storage.

Learning Material-Aware Local Descriptors for 3D Shapes

no code implementations20 Oct 2018 Hubert Lin, Melinos Averkiou, Evangelos Kalogerakis, Balazs Kovacs, Siddhant Ranade, Vladimir G. Kim, Siddhartha Chaudhuri, Kavita Bala

Unfortunately, only a small fraction of shapes in 3D repositories are labeled with physical mate- rials, posing a challenge for learning methods.

Material Classification Retrieval

3D-CODED: 3D Correspondences by Deep Deformation

no code implementations ECCV 2018 Thibault Groueix, Matthew Fisher, Vladimir G. Kim, Bryan C. Russell, Mathieu Aubry

By predicting this feature for a new shape, we implicitly predict correspondences between this shape and the template.

Learning Fuzzy Set Representations of Partial Shapes on Dual Embedding Spaces

1 code implementation4 Jul 2018 Minhyuk Sung, Anastasia Dubrovina, Vladimir G. Kim, Leonidas Guibas

Modeling relations between components of 3D objects is essential for many geometry editing tasks.

Graphics I.3.5

3D-CODED : 3D Correspondences by Deep Deformation

1 code implementation13 Jun 2018 Thibault Groueix, Matthew Fisher, Vladimir G. Kim, Bryan C. Russell, Mathieu Aubry

By predicting this feature for a new shape, we implicitly predict correspondences between this shape and the template.

Ranked #9 on 3D Dense Shape Correspondence on SHREC'19 (using extra training data)

3D Dense Shape Correspondence 3D Human Pose Estimation +2

Tags2Parts: Discovering Semantic Regions from Shape Tags

1 code implementation CVPR 2018 Sanjeev Muralikrishnan, Vladimir G. Kim, Siddhartha Chaudhuri

We test our method on segmentation benchmarks and show that even with weak supervision of whole shape tags, our method can infer meaningful semantic regions, without ever observing shape segmentations.

TAG

ComplementMe: Weakly-Supervised Component Suggestions for 3D Modeling

1 code implementation6 Aug 2017 Minhyuk Sung, Hao Su, Vladimir G. Kim, Siddhartha Chaudhuri, Leonidas Guibas

The combinatorial nature of part arrangements poses another challenge, since the retrieval network is not a function: several complements can be appropriate for the same input.

Graphics I.3.5

Learning Local Shape Descriptors from Part Correspondences With Multi-view Convolutional Networks

no code implementations14 Jun 2017 Haibin Huang, Evangelos Kalogerakis, Siddhartha Chaudhuri, Duygu Ceylan, Vladimir G. Kim, Ersin Yumer

We present a new local descriptor for 3D shapes, directly applicable to a wide range of shape analysis problems such as point correspondences, semantic segmentation, affordance prediction, and shape-to-scan matching.

Semantic Segmentation

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