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Image reconstruction is an essential step of every medical imaging method, including Photoacoustic Tomography (PAT), which is a promising modality of imaging, that unites the benefits of both ultrasound and optical imaging methods.…

图像与视频处理 · 电气工程与系统科学 2024-04-26 Hesam Hakimnejad , Zohreh Azimifar , Narjes Goshtasbi

Objective: Long-axial field-of-view (LAFOV) positron emission tomography (PET) systems allow higher sensitivity, with an increased number of detected lines of response induced by a larger angle of acceptance. However, this extended angle…

Low-dose CT images are essential for reducing radiation exposure in cancer screening, pediatric imaging, and longitudinal monitoring protocols, but their quality is often degraded by noise from low-dose acquisition, patient motion, or…

计算机视觉与模式识别 · 计算机科学 2026-03-12 Jitindra Fartiyal , Pedro Freire , Sergei K. Turitsyn , Sergei G. Solovski

Face restoration from low resolution and noise is important for applications of face analysis recognition. However, most existing face restoration models omit the multiple scale issues in face restoration problem, which is still not…

计算机视觉与模式识别 · 计算机科学 2019-01-01 Zhibo Chen , Jianxin Lin , Tiankuang Zhou , Feng Wu

Visual Servoing (VS), where images taken from a camera typically attached to the robot end-effector are used to guide the robot motions, is an important technique to tackle robotic tasks that require a high level of accuracy. We propose a…

机器人学 · 计算机科学 2019-03-13 Cunjun Yu , Zhongang Cai , Hung Pham , Quang-Cuong Pham

Image segmentation is a primary task in many medical applications. Recently, many deep networks derived from U-Net have been extensively used in various medical image segmentation tasks. However, in most of the cases, networks similar to…

计算机视觉与模式识别 · 计算机科学 2019-08-15 Balamurali Murugesan , Kaushik Sarveswaran , Sharath M Shankaranarayana , Keerthi Ram , Mohanasankar Sivaprakasam

Gait recognition is a significant biometric technique for person identification, particularly in scenarios where other physiological biometrics are impractical or ineffective. In this paper, we address the challenges associated with gait…

计算机视觉与模式识别 · 计算机科学 2024-12-06 Proma Hossain Progga , Md. Jobayer Rahman , Swapnil Biswas , Md. Shakil Ahmed , Arif Reza Anwary , Swakkhar Shatabda

In everyday life, photographs taken with a camera often suffer from motion blur due to hand vibrations or sudden movements. This phenomenon can significantly detract from the quality of the images captured, making it an interesting…

计算机视觉与模式识别 · 计算机科学 2024-12-30 Zhengdong Li

Cross-dose denoising for low-dose positron emission tomography (LDPET) has been proposed to address the limited generalization of models trained at a single noise level. However, neural networks trained on a specific dose level often fail…

计算机视觉与模式识别 · 计算机科学 2026-05-18 Yichao Liu , Zongru Shao , Yueyang Teng , Junwen Guo

LDCT has drawn major attention in the medical imaging field due to the potential health risks of CT-associated X-ray radiation to patients. Reducing the radiation dose, however, decreases the quality of the reconstructed images, which…

图像与视频处理 · 电气工程与系统科学 2022-04-19 Zhizhong Huang , Junping Zhang , Yi Zhang , Hongming Shan

Reducing scan times, radiation dose, and enhancing image quality for lower-performance scanners, are critical in low-dose PET imaging. Deep learning techniques have been investigated for PET image denoising. However, existing models have…

Myocardial perfusion imaging (MPI) by single-photon emission computed tomography (SPECT) is widely applied for the diagnosis of cardiovascular diseases. Reducing the dose of the injected tracer is essential for lowering the patient's…

计算机视觉与模式识别 · 计算机科学 2023-05-18 Xiongchao Chen , Bo Zhou , Huidong Xie , Xueqi Guo , Qiong Liu , Albert J. Sinusas , Chi Liu

Image translation across domains for unpaired datasets has gained interest and great improvement lately. In medical imaging, there are multiple imaging modalities, with very different characteristics. Our goal is to use cross-modality…

图像与视频处理 · 电气工程与系统科学 2022-02-07 Leo Segre , Or Hirschorn , Dvir Ginzburg , Dan Raviv

Convolutional Siamese neural networks have been recently used to track objects using deep features. Siamese architecture can achieve real time speed, however it is still difficult to find a Siamese architecture that maintains the…

计算机视觉与模式识别 · 计算机科学 2018-09-11 Mohamed H. Abdelpakey , Mohamed S. Shehata , Mostafa M. Mohamed

Single object tracking in satellite videos is inherently challenged by small target, blurred background, large aspect ratio changes, and frequent visual occlusions. These constraints often cause appearance-based trackers to accumulate…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Zixiao Wen , Zhen Yang , Jiawei Li , Xiantai Xiang , Guangyao Zhou , Yuxin Hu , Yuhan Liu

Modeling and synthesizing real sRGB noise is crucial for various low-level vision tasks, such as building datasets for training image denoising systems. The distribution of real sRGB noise is highly complex and affected by a multitude of…

计算机视觉与模式识别 · 计算机科学 2024-11-01 Young Joo Han , Ha-Jin Yu

We propose a neural network-based approach that computes a stable and generalizing metric (LSiM) to compare data from a variety of numerical simulation sources. We focus on scalar time-dependent 2D data that commonly arises from motion and…

机器学习 · 计算机科学 2021-01-29 Georg Kohl , Kiwon Um , Nils Thuerey

We propose a Noise Entangled GAN (NE-GAN) for simulating low-dose computed tomography (CT) images from a higher dose CT image. First, we present two schemes to generate a clean CT image and a noise image from the high-dose CT image. Then,…

图像与视频处理 · 电气工程与系统科学 2021-02-22 Chuang Niu , Ge Wang , Pingkun Yan , Juergen Hahn , Youfang Lai , Xun Jia , Arjun Krishna , Klaus Mueller , Andreu Badal , KyleJ. Myers , Rongping Zeng

In this study, 18F-FDG PET/CT brain scans of 50 patients with head and neck malignant lesions were employed to systematically assess the relationship between the amount of injected dose (10%, 8%, 6%, 5%, 4%, 3%, 2%, and 1% of standard dose)…

医学物理 · 物理学 2021-03-22 Behnoush Sanaei , Reza Faghihi , Hossein Arabi

Recently, tremendous human-designed and automatically searched neural networks have been applied to image denoising. However, previous works intend to handle all noisy images in a pre-defined static network architecture, which inevitably…

计算机视觉与模式识别 · 计算机科学 2021-10-19 Zutao Jiang , Changlin Li , Xiaojun Chang , Jihua Zhu , Yi Yang