Self-supervised denoising of raw tomography detector data for improved image reconstruction
- URL: http://arxiv.org/abs/2511.17312v1
- Date: Fri, 21 Nov 2025 15:30:44 GMT
- Title: Self-supervised denoising of raw tomography detector data for improved image reconstruction
- Abstract summary: Ultrafast electron beam X-ray computed tomography produces noisy data due to short measurement times.<n>To counteract these issues, two self-supervised deep learning methods for denoising of raw detector data were investigated.<n>We found that the application of the deep-learning-based methods was able to enhance signal-to-noise ratios in the detector data and also led to consistent improvements of the reconstructed images.
- Score: 2.91425891370655
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Ultrafast electron beam X-ray computed tomography produces noisy data due to short measurement times, causing reconstruction artifacts and limiting overall image quality. To counteract these issues, two self-supervised deep learning methods for denoising of raw detector data were investigated and compared against a non-learning based denoising method. We found that the application of the deep-learning-based methods was able to enhance signal-to-noise ratios in the detector data and also led to consistent improvements of the reconstructed images, outperforming the non-learning based method.
Related papers
- AstroSURE: Learning to Remove Noise from Astronomical Images Without Ground Truth Data [0.0]
This paper evaluates deep-learning denoising methods that can be trained without clean ground-truth images.<n>We adapt and compare Noise2Noise, Stein's Unbiased Risk Estimator, and blind-spot-based methods.<n>Results show that these methods can improve faint-source detectability relative to the original noisy images.
arXiv Detail & Related papers (2026-04-18T02:42:54Z) - DenOiS: Dual-Domain Denoising of Observation and Solution in Ultrasound Image Reconstruction [1.711666249985278]
Medical imaging aims to recover underlying tissue properties, using infidelity (simplified/linearized) imaging models and often from inaccurate and incomplete measurements.<n> Analytical reconstruction methods rely on hand-crafted regularization, sensitive to noise assumptions and parameter tuning domains.<n>We propose DeniS, a framework that denoise improves both input observations and imaging model accuracy.<n>We demonstrate this for speed-of-sound imaging as a challenging setting for quantitative ultrasound image reconstruction.
arXiv Detail & Related papers (2026-04-02T14:35:43Z) - Learned denoising with simulated and experimental low-dose CT data [8.689987421968116]
This work explores the application of machine learning methods, specifically convolutional neural networks (CNNs), in the context of noise reduction for computed tomography (CT) imaging.
We utilize a large 2D computed tomography dataset for machine learning to carry out for the first time a comprehensive study on the differences between the observed performances of algorithms trained on simulated noisy data and on real-world experimental noisy data.
arXiv Detail & Related papers (2024-08-15T12:24:22Z) - Multi-Sensor Diffusion-Driven Optical Image Translation for Large-Scale Applications [3.4085512042262374]
We propose a method that super-resolves large-scale low spatial resolution images into high-resolution equivalents from disparate optical sensors.<n>Our approach provides precise domain adaptation, preserving image content while improving radiometric accuracy and feature representation.<n>We reach a mean Learned Perceptual Image Patch Similarity (mLPIPS) of 0.1884 and a Fr'echet Inception Distance (FID) of 45.64, expressively outperforming all compared methods.
arXiv Detail & Related papers (2024-04-17T10:49:00Z) - Rotational Augmented Noise2Inverse for Low-dose Computed Tomography
Reconstruction [83.73429628413773]
Supervised deep learning methods have shown the ability to remove noise in images but require accurate ground truth.
We propose a novel self-supervised framework for LDCT, in which ground truth is not required for training the convolutional neural network (CNN)
Numerical and experimental results show that the reconstruction accuracy of N2I with sparse views is degrading while the proposed rotational augmented Noise2Inverse (RAN2I) method keeps better image quality over a different range of sampling angles.
arXiv Detail & Related papers (2023-12-19T22:40:51Z) - Reconstruct-and-Generate Diffusion Model for Detail-Preserving Image
Denoising [16.43285056788183]
We propose a novel approach called the Reconstruct-and-Generate Diffusion Model (RnG)
Our method leverages a reconstructive denoising network to recover the majority of the underlying clean signal.
It employs a diffusion algorithm to generate residual high-frequency details, thereby enhancing visual quality.
arXiv Detail & Related papers (2023-09-19T16:01:20Z) - Advancing Unsupervised Low-light Image Enhancement: Noise Estimation, Illumination Interpolation, and Self-Regulation [55.07472635587852]
Low-Light Image Enhancement (LLIE) techniques have made notable advancements in preserving image details and enhancing contrast.
These approaches encounter persistent challenges in efficiently mitigating dynamic noise and accommodating diverse low-light scenarios.
We first propose a method for estimating the noise level in low light images in a quick and accurate way.
We then devise a Learnable Illumination Interpolator (LII) to satisfy general constraints between illumination and input.
arXiv Detail & Related papers (2023-05-17T13:56:48Z) - Cross-domain Denoising for Low-dose Multi-frame Spiral Computed Tomography [20.463308418655526]
X-ray exposure raises concerns about potential health risks such as cancer.
The desire for lower radiation doses has driven researchers to improve reconstruction quality.
This paper proposes a two-stage method for the commercially available multi-slice spiral CT scanners.
arXiv Detail & Related papers (2023-04-21T09:30:22Z) - The role of noise in denoising models for anomaly detection in medical
images [62.0532151156057]
Pathological brain lesions exhibit diverse appearance in brain images.
Unsupervised anomaly detection approaches have been proposed using only normal data for training.
We show that optimization of the spatial resolution and magnitude of the noise improves the performance of different model training regimes.
arXiv Detail & Related papers (2023-01-19T21:39:38Z) - Unsupervised denoising for sparse multi-spectral computed tomography [2.969056717104372]
We investigate the suitability of learning-based improvements to the challenging task of obtaining high-quality reconstructions from sparse measurements for a 64-channel PCD-CT.
We propose an unsupervised denoising and artefact removal approach by exploiting different filter functions in the reconstruction and an explicit coupling of spectral channels with the nuclear norm.
arXiv Detail & Related papers (2022-11-02T14:36:24Z) - Zero-shot Blind Image Denoising via Implicit Neural Representations [77.79032012459243]
We propose an alternative denoising strategy that leverages the architectural inductive bias of implicit neural representations (INRs)
We show that our method outperforms existing zero-shot denoising methods under an extensive set of low-noise or real-noise scenarios.
arXiv Detail & Related papers (2022-04-05T12:46:36Z) - Multi-Channel Convolutional Analysis Operator Learning for Dual-Energy
CT Reconstruction [108.06731611196291]
We develop a multi-channel convolutional analysis operator learning (MCAOL) method to exploit common spatial features within attenuation images at different energies.
We propose an optimization method which jointly reconstructs the attenuation images at low and high energies with a mixed norm regularization on the sparse features.
arXiv Detail & Related papers (2022-03-10T14:22:54Z) - Improving Blind Spot Denoising for Microscopy [73.94017852757413]
We present a novel way to improve the quality of self-supervised denoising.
We assume the clean image to be the result of a convolution with a point spread function (PSF) and explicitly include this operation at the end of our neural network.
arXiv Detail & Related papers (2020-08-19T13:06:24Z) - Improved Slice-wise Tumour Detection in Brain MRIs by Computing
Dissimilarities between Latent Representations [68.8204255655161]
Anomaly detection for Magnetic Resonance Images (MRIs) can be solved with unsupervised methods.
We have proposed a slice-wise semi-supervised method for tumour detection based on the computation of a dissimilarity function in the latent space of a Variational AutoEncoder.
We show that by training the models on higher resolution images and by improving the quality of the reconstructions, we obtain results which are comparable with different baselines.
arXiv Detail & Related papers (2020-07-24T14:02:09Z) - Self-supervised Dynamic CT Perfusion Image Denoising with Deep Neural
Networks [6.167259271197635]
Dynamic computed tomography (CTP) imaging is a promising approach for acute ischemic stroke diagnosis and evaluation.
Hemodynamic parametric maps of cerebral parenchyma are calculated from repeated CT scans of the first pass of iodinated contrast through the brain.
It is necessary to reduce the dose of perfusion for routine applications due to the high radiation exposure from the repeated scans, where image denoising is necessary to achieve a reliable diagnosis.
arXiv Detail & Related papers (2020-05-19T21:44:07Z) - Noise2Inverse: Self-supervised deep convolutional denoising for
tomography [0.0]
Noise2Inverse is a deep CNN-based denoising method for linear image reconstruction algorithms.
We develop a theoretical framework which shows that such training indeed obtains a denoising CNN.
On simulated CT datasets, Noise2Inverse demonstrates an improvement in peak signal-to-noise ratio and structural similarity index.
arXiv Detail & Related papers (2020-01-31T12:50:24Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.