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The reconstruction of dynamic positron emission tomography (PET) images from noisy projection data is a significant but challenging problem. In this paper, we introduce an unsupervised learning approach, Non-negative Implicit Neural…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Chaozhi Zhang , Wenxiang Ding , Roy Y. He , Xiaoqun Zhang , Qiaoqiao Ding

Neural networks are often trained on multiple tasks, either simultaneously (multi-task learning, MTL) or sequentially (pretraining and subsequent finetuning, PT+FT). In particular, it is common practice to pretrain neural networks on a…

Machine Learning · Computer Science 2024-11-04 Samuel Lippl , Jack W. Lindsey

Deep Learning in Image Registration (DLIR) methods have been tremendously successful in image registration due to their speed and ability to incorporate weak label supervision at training time. However, existing DLIR methods forego many of…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Rohit Jena , Pratik Chaudhari , James C. Gee

Multimodal large language models (MLLMs) trained with visual instruction tuning have achieved strong performance across diverse tasks, yet they remain limited in vision-centric tasks such as object counting or spatial reasoning. We…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Heeji Yoon , Jaewoo Jung , Junwan Kim , Hyungyu Choi , Heeseong Shin , Sangbeom Lim , Honggyu An , Chaehyun Kim , Jisang Han , Donghyun Kim , Chanho Eom , Sunghwan Hong , Seungryong Kim

Implicit Neural Representations (INRs) model signals as continuous, differentiable functions. However, monolithic INRs scale poorly with data dimensionality, leading to excessive training costs. We propose F-INR, a framework that addresses…

Machine Learning · Computer Science 2025-11-27 Sai Karthikeya Vemuri , Tim Büchner , Joachim Denzler

Implicit Neural Representations (INRs) have emerged as promising surrogates for large 3D scientific simulations due to their ability to continuously model spatial and conditional fields, yet they face a critical fidelity-speed dilemma: deep…

Machine Learning · Computer Science 2026-03-25 Tianyu Xiong , Skylar Wurster , Han-Wei Shen

Traditional multi-view photometric stereo (MVPS) methods are often composed of multiple disjoint stages, resulting in noticeable accumulated errors. In this paper, we present a neural inverse rendering method for MVPS based on implicit…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Wenqi Yang , Guanying Chen , Chaofeng Chen , Zhenfang Chen , Kwan-Yee K. Wong

Self-supervised learning methods like masked autoencoders (MAE) have shown significant promise in learning robust feature representations, particularly in image reconstruction-based pretraining task. However, their performance is often…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Sua Lee , Joonhun Lee , Myungjoo Kang

Model-based reinforcement learning (RL) has proven to be a data efficient approach for learning control tasks but is difficult to utilize in domains with complex observations such as images. In this paper, we present a method for learning…

Machine Learning · Computer Science 2019-06-25 Marvin Zhang , Sharad Vikram , Laura Smith , Pieter Abbeel , Matthew J. Johnson , Sergey Levine

We show that typical implicit regularization assumptions for deep neural networks (for regression) do not hold for coordinate-MLPs, a family of MLPs that are now ubiquitous in computer vision for representing high-frequency signals. Lack of…

Machine Learning · Computer Science 2022-02-03 Sameera Ramasinghe , Lachlan MacDonald , Simon Lucey

Echo Planar Imaging (EPI) is widely used for its rapid acquisition but suffers from severe geometric distortions due to B0 inhomogeneities, particularly along the phase encoding direction. Existing methods follow a two-step process:…

Image and Video Processing · Electrical Eng. & Systems 2025-07-25 Wenqi Huang , Nan Wang , Congyu Liao , Yimeng Lin , Mengze Gao , Daniel Rueckert , Kawin Setsompop

We introduce a new neural signal model designed for efficient high-resolution representation of large-scale signals. The key innovation in our multiscale implicit neural representation (MINER) is an internal representation via a Laplacian…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Vishwanath Saragadam , Jasper Tan , Guha Balakrishnan , Richard G. Baraniuk , Ashok Veeraraghavan

Quantitative T1rho mapping has shown promise in clinical and research studies. However, it suffers from long scan times. Deep learning-based techniques have been successfully applied in accelerated quantitative MR parameter mapping.…

Image and Video Processing · Electrical Eng. & Systems 2024-07-25 Yuanyuan Liu , Jinwen Xie , Zhuo-Xu Cui , Qingyong Zhu , Jing Cheng , Dong Liang , Yanjie Zhu

$\textit{Implicit neural representations}$ (INRs) aim to learn a $\textit{continuous function}$ (i.e., a neural network) to represent an image, where the input and output of the function are pixel coordinates and RGB/Gray values,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Ke Liu , Feng Liu , Haishuai Wang , Ning Ma , Jiajun Bu , Bo Han

Weight Space Learning (WSL), which frames neural network weights as a data modality, is an emerging field with potential for tasks like meta-learning or transfer learning. Particularly, Implicit Neural Representations (INRs) provide a…

Machine Learning · Computer Science 2026-02-02 Tianming Qiu , Christos Sonis , Hao Shen

Large language models (LLMs) have demonstrated impressive few-shot in-context learning (ICL) abilities. Still, we show that they are sometimes prone to a `copying bias', where they copy answers from provided examples instead of learning the…

Computation and Language · Computer Science 2024-10-04 Ameen Ali , Lior Wolf , Ivan Titov

Advancements in parallel processing have lead to a surge in multilayer perceptrons' (MLP) applications and deep learning in the past decades. Recurrent Neural Networks (RNNs) give additional representational power to feedforward MLPs by…

Machine Learning · Statistics 2014-10-22 Saahil Ognawala , Justin Bayer

Deep Reinforcement Learning (RL) has demonstrated success in solving complex sequential decision-making problems by integrating neural networks with the RL framework. However, training deep RL models poses several challenges, such as the…

Machine Learning · Computer Science 2025-09-30 Sooraj Sathish , Keshav Goyal , Raghuram Bharadwaj Diddigi

Years of study of the propagation channel showed a close relation between a location and the associated communication channel response. The use of a neural network to learn the location-to-channel mapping can therefore be envisioned. The…

Information Theory · Computer Science 2025-03-21 Baptiste Chatelier , Vincent Corlay , Matthieu Crussière , Luc Le Magoarou

Implicit Neural Representations (INRs) are proving to be a powerful paradigm in unifying task modeling across diverse data domains, offering key advantages such as memory efficiency and resolution independence. Conventional deep learning…

Machine Learning · Computer Science 2025-03-20 Amirhossein Kazerouni , Soroush Mehraban , Michael Brudno , Babak Taati