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This paper addresses the challenging problem of category-level pose estimation. Current state-of-the-art methods for this task face challenges when dealing with symmetric objects and when attempting to generalize to new environments solely…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Takuya Ikeda , Sergey Zakharov , Tianyi Ko , Muhammad Zubair Irshad , Robert Lee , Katherine Liu , Rares Ambrus , Koichi Nishiwaki

Model-based computational elasticity imaging of tissues can be posed as solving an inverse problem over finite elements spanning the displacement image. As most existing quasi-static elastography methods count on deterministic formulations…

图像与视频处理 · 电气工程与系统科学 2020-10-22 Narges Mohammadi , Marvin M. Doyley , Mujdat Cetin

Deblurring is a fundamental inverse problem in bioimaging. It requires modelling the point spread function (PSF), which captures the optical distortions entailed by the image formation process. The PSF limits the spatial resolution…

图像与视频处理 · 电气工程与系统科学 2019-03-04 Denis K. Samuylov , Prateek Purwar , Gábor Székely , Grégory Paul

The recent emergence of diffusion models has significantly advanced the precision of learnable priors, presenting innovative avenues for addressing inverse problems. Since inverse problems inherently entail maximum a posteriori estimation,…

机器学习 · 计算机科学 2025-01-22 Jiawei Zhang , Jiaxin Zhuang , Cheng Jin , Gen Li , Yuantao Gu

A multi-scale approach to the inverse reconstruction of a pattern's microstructure is reported. Instead of a correlation function, a pair of entropic descriptors (EDs) is proposed for stochastic optimization method. The first of them…

统计力学 · 物理学 2011-02-16 R. Piasecki

Recent advances in diffusion models have demonstrated exceptional performance in generative tasks across vari-ous fields. In positron emission tomography (PET), the reduction in tracer dose leads to information loss in sino-grams. Using…

机器学习 · 计算机科学 2024-11-11 Xingyu Ai , Bin Huang , Fang Chen , Liu Shi , Binxuan Li , Shaoyu Wang , Qiegen Liu

A dramatic influx of diffusion-generated images has marked recent years, posing unique challenges to current detection technologies. While the task of identifying these images falls under binary classification, a seemingly straightforward…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Yewon Lim , Changyeon Lee , Aerin Kim , Oren Etzioni

While diffusion-based image restoration (IR) methods have achieved remarkable success, they are still limited by the low inference speed attributed to the necessity of executing hundreds or even thousands of sampling steps. Existing…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Zongsheng Yue , Jianyi Wang , Chen Change Loy

This paper presents a new deep regression model, which we call DeepDistance, for cell detection in images acquired with inverted microscopy. This model considers cell detection as a task of finding most probable locations that suggest cell…

计算机视觉与模式识别 · 计算机科学 2019-08-30 Can Fahrettin Koyuncu , Gozde Nur Gunesli , Rengul Cetin-Atalay , Cigdem Gunduz-Demir

We propose a unified diffusion model-based correction and super-resolution method to enhance the fidelity and resolution of diverse low-quality data through a two-step pipeline. First, the correction step employs a novel enhanced stochastic…

数值分析 · 数学 2025-05-15 Wuzhe Xu , Yulong Lu , Sifan Wang , Tong-Rui Liu

The aim of this paper is to discuss potential advances in PET kinetic models and direct reconstruction of kinetic parameters. As a prominent example we focus on a typical task in perfusion imaging and derive a system of…

最优化与控制 · 数学 2014-11-20 Louise Reips , Martin Burger , Ralf Engbers

Diffusion models have impressive image generation capability, but low-quality generations still exist, and their identification remains challenging due to the lack of a proper sample-wise metric. To address this, we propose BayesDiff, a…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Siqi Kou , Lei Gan , Dequan Wang , Chongxuan Li , Zhijie Deng

The simulation of the metabolism in mammalian cells becomes a severe problem if spatial distributions must be taken into account. Especially the cytoplasm has a very complex geometric structure which cannot be handled by standard…

数值分析 · 数学 2010-03-01 Michael Hanke , Marry-Chriz Cabauatan-Villanueva

Dataset Distillation aims to synthesize compact datasets that can approximate the training efficacy of large-scale real datasets, offering an efficient solution to the increasing computational demands of modern deep learning. Recently,…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Chenru Wang , Yunyi Chen , Zijun Yang , Joey Tianyi Zhou , Chi Zhang

Image-to-image reconstruction problems with free or inexpensive metadata in the form of class labels appear often in biological and medical image domains. Existing text-guided or style-transfer image-to-image approaches do not translate to…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Jan Oscar Cross-Zamirski , Praveen Anand , Guy Williams , Elizabeth Mouchet , Yinhai Wang , Carola-Bibiane Schönlieb

We introduce a general framework for solving partial differential equations (PDEs) using generative diffusion models. In particular, we focus on the scenarios where we do not have the full knowledge of the scene necessary to apply classical…

机器学习 · 计算机科学 2024-11-04 Jiahe Huang , Guandao Yang , Zichen Wang , Jeong Joon Park

Diffusion models have become increasingly popular for generative modeling due to their ability to generate high-quality samples. This has unlocked exciting new possibilities for solving inverse problems, especially in image restoration and…

Segmentation masks of pathological areas are useful in many medical applications, such as brain tumour and stroke management. Moreover, healthy counterfactuals of diseased images can be used to enhance radiologists' training files and to…

图像与视频处理 · 电气工程与系统科学 2024-10-02 Alessandro Fontanella , Grant Mair , Joanna Wardlaw , Emanuele Trucco , Amos Storkey

Inverse problems aim to determine parameters from observations, a crucial task in engineering and science. Lately, generative models, especially diffusion models, have gained popularity in this area for their ability to produce realistic…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Gabriel della Maggiora , Luis Alberto Croquevielle , Nikita Deshpande , Harry Horsley , Thomas Heinis , Artur Yakimovich

The observations in many applications consist of counts of discrete events, such as photons hitting a detector, which cannot be effectively modeled using an additive bounded or Gaussian noise model, and instead require a Poisson noise…

最优化与控制 · 数学 2011-10-13 Zachary T. Harmany , Roummel F. Marcia , Rebecca M. Willett