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We introduce Neural Point Light Fields that represent scenes implicitly with a light field living on a sparse point cloud. Combining differentiable volume rendering with learned implicit density representations has made it possible to…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Julian Ost , Issam Laradji , Alejandro Newell , Yuval Bahat , Felix Heide

Our work focuses on addressing sample deficiency from low-density regions of data manifold in common image datasets. We leverage diffusion process based generative models to synthesize novel images from low-density regions. We observe that…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Vikash Sehwag , Caner Hazirbas , Albert Gordo , Firat Ozgenel , Cristian Canton Ferrer

Solving geometric tasks involving point clouds by using machine learning is a challenging problem. Standard feed-forward neural networks combine linear or, if the bias parameter is included, affine layers and activation functions. Their…

Machine Learning · Computer Science 2022-06-15 Pavlo Melnyk , Michael Felsberg , Mårten Wadenbäck

Traditional molecule generation methods often rely on sequence- or graph-based representations, which can limit their expressive power or require complex permutation-equivariant architectures. This paper introduces a novel paradigm for…

Machine Learning · Computer Science 2025-02-18 Van Khoa Nguyen , Maciej Falkiewicz , Giangiacomo Mercatali , Alexandros Kalousis

Diffusion has shown great success in improving accuracy of unsupervised image retrieval systems by utilizing high-order structures of image manifold. However, existing diffusion methods suffer from three major limitations: 1) they usually…

Computer Vision and Pattern Recognition · Computer Science 2020-06-15 Zhiyong Dou , Haotian Cui , Lin Zhang , Bo Wang

Adapting neural networks to new tasks typically requires task-specific fine-tuning, which is time-consuming and reliant on labeled data. We explore a generative alternative that produces task-specific parameters directly from task identity,…

Machine Learning · Computer Science 2025-06-24 Lijun Zhang , Xiao Liu , Hui Guan

We propose a novel approach for deformation-aware neural networks that learn the weighting and synthesis of dense volumetric deformation fields. Our method specifically targets the space-time representation of physical surfaces from liquid…

Graphics · Computer Science 2019-02-21 Lukas Prantl , Boris Bonev , Nils Thuerey

We introduce the Pyramid Diffusion Model (PDM), a novel architecture designed for ultra-high-resolution image synthesis. PDM utilizes a pyramid latent representation, providing a broader design space that enables more flexible, structured,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Jiajie Yang

Recent development of neural implicit function has shown tremendous success on high-quality 3D shape reconstruction. However, most works divide the space into inside and outside of the shape, which limits their representing power to…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Jianglong Ye , Yuntao Chen , Naiyan Wang , Xiaolong Wang

We introduce Mediffusion -- a new method for semi-supervised learning with explainable classification based on a joint diffusion model. The medical imaging domain faces unique challenges due to scarce data labelling -- insufficient for…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Joanna Kaleta , Paweł Skierś , Jan Dubiński , Przemysław Korzeniowski , Kamil Deja

Neural signed distance functions (SDFs) are emerging as an effective representation for 3D shapes. State-of-the-art methods typically encode the SDF with a large, fixed-size neural network to approximate complex shapes with implicit…

Computer Vision and Pattern Recognition · Computer Science 2021-01-27 Towaki Takikawa , Joey Litalien , Kangxue Yin , Karsten Kreis , Charles Loop , Derek Nowrouzezahrai , Alec Jacobson , Morgan McGuire , Sanja Fidler

Purely MLP-based neural radiance fields (NeRF-based methods) often suffer from underfitting with blurred renderings on large-scale scenes due to limited model capacity. Recent approaches propose to geographically divide the scene and adopt…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Linning Xu , Yuanbo Xiangli , Sida Peng , Xingang Pan , Nanxuan Zhao , Christian Theobalt , Bo Dai , Dahua Lin

Undoubtedly, high-fidelity 3D hair plays an indispensable role in digital humans. However, existing monocular hair modeling methods are either tricky to deploy in digital systems (e.g., due to their dependence on complex user interactions…

Graphics · Computer Science 2022-05-10 Keyu Wu , Yifan Ye , Lingchen Yang , Hongbo Fu , Kun Zhou , Youyi Zheng

Diffusion models have become a new generative paradigm for text generation. Considering the discrete categorical nature of text, in this paper, we propose GlyphDiffusion, a novel diffusion approach for text generation via text-guided image…

Computation and Language · Computer Science 2023-05-09 Junyi Li , Wayne Xin Zhao , Jian-Yun Nie , Ji-Rong Wen

We propose a method to fuse frozen text-only large language models (LLMs) with pre-trained image encoder and decoder models, by mapping between their embedding spaces. Our model demonstrates a wide suite of multimodal capabilities: image…

Computation and Language · Computer Science 2023-10-16 Jing Yu Koh , Daniel Fried , Ruslan Salakhutdinov

Text-to-image diffusion models sometimes depict blended concepts in the generated images. One promising use case of this effect would be the nonword-to-image generation task which attempts to generate images intuitively imaginable from a…

Multimedia · Computer Science 2024-11-07 Chihaya Matsuhira , Marc A. Kastner , Takahiro Komamizu , Takatsugu Hirayama , Ichiro Ide

Recent research works have focused on generating human models and garments from their 2D images. However, state-of-the-art researches focus either on only a single layer of the garment on a human model or on generating multiple garment…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Alakh Aggarwal , Jikai Wang , Steven Hogue , Saifeng Ni , Madhukar Budagavi , Xiaohu Guo

Designing generative models for 3D structural brain MRI that synthesize morphologically-plausible and attribute-specific (e.g., age, sex, disease state) samples is an active area of research. Existing approaches based on frameworks like…

Image and Video Processing · Electrical Eng. & Systems 2025-08-04 Alan Q. Wang , Fangrui Huang , Bailey Trang , Wei Peng , Mohammad Abbasi , Kilian Pohl , Mert Sabuncu , Ehsan Adeli

We present a novel method for exemplar-based image translation, called matching interleaved diffusion models (MIDMs). Most existing methods for this task were formulated as GAN-based matching-then-generation framework. However, in this…

Computer Vision and Pattern Recognition · Computer Science 2023-03-30 Junyoung Seo , Gyuseong Lee , Seokju Cho , Jiyoung Lee , Seungryong Kim

Latent diffusion models (LDMs) power state-of-the-art high-resolution generative image models. LDMs learn the data distribution in the latent space of an autoencoder (AE) and produce images by mapping the generated latents into RGB image…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Tariq Berrada , Pietro Astolfi , Melissa Hall , Marton Havasi , Yohann Benchetrit , Adriana Romero-Soriano , Karteek Alahari , Michal Drozdzal , Jakob Verbeek