Anders Bjorholm Dahl
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View article: ReLumix: Extending Image Relighting to Video via Video Diffusion Models
ReLumix: Extending Image Relighting to Video via Video Diffusion Models Open
Controlling illumination during video post-production is a crucial yet elusive goal in computational photography. Existing methods often lack flexibility, restricting users to certain relighting models. This paper introduces ReLumix, a nov…
View article: SA-UNetv2: Rethinking Spatial Attention U-Net for Retinal Vessel Segmentation
SA-UNetv2: Rethinking Spatial Attention U-Net for Retinal Vessel Segmentation Open
Retinal vessel segmentation is essential for early diagnosis of diseases such as diabetic retinopathy, hypertension, and neurodegenerative disorders. Although SA-UNet introduces spatial attention in the bottleneck, it underuses attention i…
View article: Single exposure X-ray nano-tomography in the near-field Fresnel regime with multilayer Laue lenses
Single exposure X-ray nano-tomography in the near-field Fresnel regime with multilayer Laue lenses Open
Since the introduction of X-ray holotomography in projection geometry, this modality has proven to be highly effective for practical applications in the 100 nm spatial resolution range. However, one of the main obstacles to its implementat…
View article: Quantitative measurement of the anisotropy of a turbid medium using polarization imaging
Quantitative measurement of the anisotropy of a turbid medium using polarization imaging Open
Quantifying anisotropy in turbid media is critical for applications ranging from biomedical diagnostics to food quality assessment. Using a polarization camera and irradiation by a linearly polarized beam, we present a noninvasive method f…
View article: Quantitative measurement of the anisotropy of a turbid medium using polarization imaging
Quantitative measurement of the anisotropy of a turbid medium using polarization imaging Open
Quantifying anisotropy in turbid media is critical for applications ranging from biomedical diagnostics to food quality assessment. Using a polarization camera and irradiation by a linearly polarized beam, we present a noninvasive method f…
View article: Fast Sphericity and Roundness approximation in 2D and 3D using Local Thickness
Fast Sphericity and Roundness approximation in 2D and 3D using Local Thickness Open
Sphericity and roundness are fundamental measures used for assessing object uniformity in 2D and 3D images. However, using their strict definition makes computation costly. As both 2D and 3D microscopy imaging datasets grow larger, there i…
View article: Disconnect to Connect: A Data Augmentation Method for Improving Topology Accuracy in Image Segmentation
Disconnect to Connect: A Data Augmentation Method for Improving Topology Accuracy in Image Segmentation Open
Accurate segmentation of thin, tubular structures (e.g., blood vessels) is challenging for deep neural networks. These networks classify individual pixels, and even minor misclassifications can break the thin connections within these struc…
View article: TopoMortar: A dataset to evaluate image segmentation methods focused on topology accuracy
TopoMortar: A dataset to evaluate image segmentation methods focused on topology accuracy Open
We present TopoMortar, a brick wall dataset that is the first dataset specifically designed to evaluate topology-focused image segmentation methods, such as topology loss functions. Motivated by the known sensitivity of methods to dataset …
View article: A General Purpose Spectral Foundational Model for Both Proximal and Remote Sensing Spectral Imaging
A General Purpose Spectral Foundational Model for Both Proximal and Remote Sensing Spectral Imaging Open
Spectral imaging data acquired via multispectral and hyperspectral cameras can have hundreds of channels, where each channel records the reflectance at a specific wavelength and bandwidth. Time and resource constraints limit our ability to…
View article: Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: Feature-Centered First Order Structure Tensor Scale-Space in 2D and 3D
Feature-Centered First Order Structure Tensor Scale-Space in 2D and 3D Open
The structure tensor method is often used for 2D and 3D analysis of imaged structures, but its results are in many cases very dependent on the user’s choice of method parameters. We simplify this parameter choice in first order structure t…
View article: 3D multiscale characterization of the human placenta: Bridging anatomy and histology by X-ray phase-contrast tomography
3D multiscale characterization of the human placenta: Bridging anatomy and histology by X-ray phase-contrast tomography Open
The human placenta exhibits a complex three-dimensional (3D) structure with a interpenetrating vascular tree and large internal interfacial area. In a unique and yet insufficiently explored way, this parenchymal structure enables its multi…
View article: Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: MozzaVID: Mozzarella Volumetric Image Dataset
MozzaVID: Mozzarella Volumetric Image Dataset Open
Influenced by the complexity of volumetric imaging, there is a shortage of established datasets useful for benchmarking volumetric deep-learning models. As a consequence, new and existing models are not easily comparable, limiting the deve…
View article: MTVNet: Mapping using Transformers for Volumes -- Network for Super-Resolution with Long-Range Interactions
MTVNet: Mapping using Transformers for Volumes -- Network for Super-Resolution with Long-Range Interactions Open
Until now, it has been difficult for volumetric super-resolution to utilize the recent advances in transformer-based models seen in 2D super-resolution. The memory required for self-attention in 3D volumes limits the receptive field. There…
View article: Automated stenosis estimation of coronary angiographies using end-to-end learning
Automated stenosis estimation of coronary angiographies using end-to-end learning Open
Background The initial evaluation of coronary stenosis during coronary angiography is typically performed by visual assessment. The visual assessment of coronary angiographies has limited accuracy compared to quantitative methods like frac…
View article: Feature-Centered First Order Structure Tensor Scale-Space in 2D and 3D
Feature-Centered First Order Structure Tensor Scale-Space in 2D and 3D Open
The structure tensor method is often used for 2D and 3D analysis of imaged structures, but its results are in many cases very dependent on the user's choice of method parameters. We simplify this parameter choice in first order structure t…
View article: Super-Resolution Ultrasound Imaging Using the Erythrocytes—Part II: Velocity Images
Super-Resolution Ultrasound Imaging Using the Erythrocytes—Part II: Velocity Images Open
Super-resolution ultrasound imaging using the erythrocytes (SURE) has recently been introduced. The method uses erythrocytes as targets instead of fragile microbubbles (MBs). The abundance of erythrocyte scatterers makes it possible to acq…
View article: Super-Resolution Ultrasound Imaging Using the Erythrocytes—Part I: Density Images
Super-Resolution Ultrasound Imaging Using the Erythrocytes—Part I: Density Images Open
A new approach for vascular super-resolution (SR) imaging using the erythrocytes as targets (SUper-Resolution ultrasound imaging of Erythrocytes (SURE) imaging) is described and investigated. SURE imaging does not require fragile contrast …
View article: Reviewer #2 (Public Review): Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Reviewer #2 (Public Review): Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: Reviewer #1 (Public Review): Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Reviewer #1 (Public Review): Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species
Bridging the 3D geometrical organisation of white matter pathways across anatomical length scales and species Open
We used diffusion MRI and x-ray synchrotron imaging on monkey and mice brains to examine the organisation of fibre pathways in white matter across anatomical scales. We compared the structure in the corpus callosum and crossing fibre regio…
View article: Finding Space-Time Boundaries with Deformable Hypersurfaces
Finding Space-Time Boundaries with Deformable Hypersurfaces Open
Dynamic 3D imaging is increasingly used to study evolving objects. We address the problem of detecting and tracking simple objects that merge or split in time. Common solutions involve detecting topological changes. Instead, we solve the p…