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We propose a novel unpaired image-to-image translation method that uses denoising diffusion probabilistic models without requiring adversarial training. Our method, UNpaired Image Translation with Denoising Diffusion Probabilistic Models…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Hiroshi Sasaki , Chris G. Willcocks , Toby P. Breckon

PET image reconstruction is challenging due to the ill-poseness of the inverse problem and limited number of detected photons. Recently deep neural networks have been widely and successfully used in computer vision tasks and attracted…

Computer Vision and Pattern Recognition · Computer Science 2017-10-11 Kuang Gong , Jiahui Guan , Kyungsang Kim , Xuezhu Zhang , Georges El Fakhri , Jinyi Qi , Quanzheng Li

Purpose: To develop an open-source, fully-automatic deep learning algorithm, DeepGPET, for choroid region segmentation in optical coherence tomography (OCT) data. Methods: We used a dataset of 715 OCT B-scans (82 subjects, 115 eyes) from 3…

Generative modeling of 3D LiDAR data is an emerging task with promising applications for autonomous mobile robots, such as scalable simulation, scene manipulation, and sparse-to-dense completion of LiDAR point clouds. While existing…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Kazuto Nakashima , Ryo Kurazume

Optical Coherence Tomography (OCT) is a non-invasive imaging modality essential for diagnosing various eye diseases. Despite its clinical significance, developing OCT-based diagnostic tools faces challenges, such as limited public datasets,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-30 Mohammadreza Saraei , Igor Kozak , Eung-Joo Lee

Developing new methods for the automated analysis of clinical fetal and neonatal MRI data is limited by the scarcity of annotated pathological datasets and privacy concerns that often restrict data sharing, hindering the effectiveness of…

Healthy tissue inpainting has significant applications, including the generation of pseudo-healthy baselines for tumor growth models and the facilitation of image registration. In previous editions of the BraTS Local Synthesis of Healthy…

Image and Video Processing · Electrical Eng. & Systems 2025-07-18 Alicia Durrer , Florentin Bieder , Paul Friedrich , Bjoern Menze , Philippe C. Cattin , Florian Kofler

Visual defect detection in industrial glass manufacturing remains a critical challenge due to the low frequency of defective products, leading to imbalanced datasets that limit the performance of deep learning models and computer vision…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Sajjad Rezvani Boroujeni , Hossein Abedi , Tom Bush

Objective: To validate and compare the performance of eight available deep learning architectures in grading the severity of glaucoma based on color fundus images. Materials and Methods: We retrospectively collected a dataset of 5978 fundus…

Computer Vision and Pattern Recognition · Computer Science 2018-11-01 Yi Zhen , Lei Wang , Han Liu , Jian Zhang , Jiantao Pu

Existing customization methods require access to multiple reference examples to align pre-trained diffusion probabilistic models (DPMs) with user-provided concepts. This paper aims to address the challenge of DPM customization when the only…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Jiachun Pan , Jun Hao Liew , Vincent Y. F. Tan , Jiashi Feng , Hanshu Yan

Positron emission tomography (PET) is the most sensitive molecular imaging modality routinely applied in our modern healthcare. High radioactivity caused by the injected tracer dose is a major concern in PET imaging and limits its clinical…

Image and Video Processing · Electrical Eng. & Systems 2023-04-04 Yuxin Xue , Yige Peng , Lei Bi , Dagan Feng , Jinman Kim

Purpose: Apparent diffusion coefficient (ADC) maps derived from diffusion weighted (DWI) MRI provides functional measurements about the water molecules in tissues. However, DWI is time consuming and very susceptible to image artifacts,…

Image and Video Processing · Electrical Eng. & Systems 2024-07-08 Zach Eidex , Mojtaba Safari , Jacob Wynne , Richard L. J. Qiu , Tonghe Wang , David Viar Hernandez , Hui-Kuo Shu , Hui Mao , Xiaofeng Yang

Denoising Diffusion Probabilistic Models (DDPMs) can generate high-quality samples such as image and audio samples. However, DDPMs require hundreds to thousands of iterations to produce final samples. Several prior works have successfully…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Luping Liu , Yi Ren , Zhijie Lin , Zhou Zhao

The generation of synthetic CT (sCT) images from cone-beam CT (CBCT) data using deep learning methodologies represents a significant advancement in radiation oncology. This systematic review, following PRISMA guidelines and using the PICO…

Image and Video Processing · Electrical Eng. & Systems 2025-01-27 Alzahra Altalib , Scott McGregor , Chunhui Li , Alessandro Perelli

A 3D deep learning model (OARnet) is developed and used to delineate 28 H&N OARs on CT images. OARnet utilizes a densely connected network to detect the OAR bounding-box, then delineates the OAR within the box. It reuses information from…

Image and Video Processing · Electrical Eng. & Systems 2021-11-24 Mumtaz Hussain Soomro , Hamidreza Nourzadeh , Victor Gabriel Leandro Alves , Wookjin Choi , Jeffrey V. Siebers

Deep networks are increasingly being applied to problems involving image synthesis, e.g., generating images from textual descriptions and reconstructing an input image from a compact representation. Supervised training of image-synthesis…

Machine Learning · Computer Science 2017-01-25 Jake Snell , Karl Ridgeway , Renjie Liao , Brett D. Roads , Michael C. Mozer , Richard S. Zemel

Nosie is an important cause of low quality Optical coherence tomography (OCT) image. The neural network model based on Convolutional neural networks(CNNs) has demonstrated its excellent performance in image denoising. However, OCT image…

Image and Video Processing · Electrical Eng. & Systems 2022-05-03 Jie Du , Xujian Yang , Kecheng Jin , Xuanzheng Qi , Hu Chen

Digital breast tomosynthesis (DBT) exams should utilize the lowest possible radiation dose while maintaining sufficiently good image quality for accurate medical diagnosis. In this work, we propose a convolution neural network (CNN) to…

Image and Video Processing · Electrical Eng. & Systems 2022-03-23 Rodrigo de Barros Vimieiro , Chuang Niu , Hongming Shan , Lucas Rodrigues Borges , Ge Wang , Marcelo Andrade da Costa Vieira

Optical coherence tomography (OCT) has stimulated a wide range of medical image-based diagnosis and treatment in fields such as cardiology and ophthalmology. Such applications can be further facilitated by deep learning-based…

Medical Physics · Physics 2023-07-24 Xueshen Li , Zhenxing Dong , Hongshan Liu , Jennifer J. Kang-Mieler , Yuye Ling , Yu Gan

In the field of medical imaging, 3D deep learning models play a crucial role in building powerful predictive models of disease progression. However, the size of these models presents significant challenges, both in terms of computational…