DSB research group news

Click on the news headline to read the full story

Last modified Oct. 14, 2026 5:50 PM by Sven Peter Näsholm

Professor Anis Yazidi from DSB has co-authored three NeurIPS 2026 papers on learning, foraging, and evolution.

 

Last modified Oct. 2, 2026 7:55 PM by Sven Peter Näsholm

A new study for a long-horizon agentic framework that generates documentation within a single, integrated context spanning the entire repository has been accepted at NeurIPS 2026. This work is authored by Suyoung Bae, a visiting researcher under AURoRA, the Norway-Korea joint research project on low-resource large vision-language models.

Last modified Oct. 2, 2026 7:57 PM by Sven Peter Näsholm

This paper by Sigurd Holmsen et al. has been accepted at NeurIPS 2026. We introduce a non-parametric mutual information estimator that uses vine copulas to offer fast, interpretable, and accurate estimates.

Last modified Oct. 2, 2026 7:56 PM by Sven Peter Näsholm

Deep-learning models work well on medical images, but whole-slide images (WSIs) used in histopathology are so large that researchers usually have to freeze much of the model (the whole encoder) during training. This work proposes a novel method to train the full model end-to-end under realistic GPU memory constraints and investigates when this is beneficial.

Last modified Sep. 29, 2026 3:34 PM by Meike Nienaber

Hi everyone, my name is Meike Nienaber and I am joining the Digital Signal Processing and Image Analysis (DSB) and Visual Intelligence groups as a PhD fellow!

Last modified Oct. 2, 2026 7:59 PM by Sven Peter Näsholm

A hierarchical contrastive learning framework that effectively captures both local and global temporal patterns in time-series analysis by using a progressive memory attention architecture.  

The work "Progressive Memory Transformer: Memory-Aware Attention for Time-Series" by Tord Sture Stangeland, Andreas Köhler, Steffen Maeland, and Adín Ramírez Rivera was accepted at NeurIPS 2026!

Last modified Sep. 12, 2026 12:52 PM by Mohamed Aziz Boukraa

We had the pleasure of hosting Marcella Bonazzoli from Inria and Morgane Mathevet from EDF, both members of the IDEFIX team, at the DSB group at the University of Oslo.

Last modified Sep. 10, 2026 9:58 AM by Sven Peter Näsholm

Jiin Han, a visiting researcher from Sungkyunkwan University under AURoRA, the Norway-Korea joint research project on low-resource large vision-language models, has returned to South Korea after a three-month stay with us.

Last modified Sep. 10, 2026 9:54 AM by Sven Peter Näsholm

A new study addressing code localization in automated software engineering has been accepted at EMNLP 2026 main track. This work is co-authored by Suyoung Bae, a visiting researcher under AURoRA, the Norway-Korea joint research project on low-resource large vision-language models.

Last modified Sep. 10, 2026 10:02 AM by Sven Peter Näsholm

We are pleased to welcome Suyoung Bae and Doyoung Kim from Sungkyunkwan University (SKKU), and Erling Arvola Devold from the Institute for Cancer Genetics and Informatics at Oslo University Hospital.

Last modified Sep. 8, 2026 4:34 PM by Sven Peter Näsholm

A new study addressing speed-of-sound aberrations in obstetric imaging has been published in IEEE Transactions on Medical Imaging (TMI). The work, co-authored by Ole Marius Hoel Rindal, introduces a coherence-based method to estimate and correct for tissue-induced aberrations in real-time, sharpening B-mode images and improving fetal measurement precision.

Last modified Aug. 21, 2026 2:13 PM by Sven Peter Näsholm

We have a new project received seed funding from MishMash Centre for AI and Creativity and we are looking for one motivated MS student:

Title: Agency and Control in Musical Ensemble

The central inquiry of the project concerns the location of creative agency when no individual agent, whether human or artificial, ever perceives the complete work.

The project investigates where creative agency is located when neither human nor machine ever perceives the complete musical composition. A work is constructed from an ensemble of agents that never interact directly — one shapes rhythm, another timbre, a third the overall structure, and a fourth, a digital signal-processing layer, determines acoustic feasibility. An additional, often unacknowledged contributor is introduced: using RITMO’s Oslo Standstill recordings of individuals attempting, yet failing, to stand still during musical playback, the involuntary micro-movements of audience members’ bodies generate the rhythmic foundation, allowing the audience to contribute to the composition prior to experiencing it. The project quantitatively assesses the proportion of the final work attributable to these absent bodies, to each machine agent, and to their collective interaction.

We will collaborate closely with RITMO and MishMash researchers.

Ideal candidate: someone with expertise in deep learning + interest in music

Salary is 40k NOK.

Please send me an email if you are interested in this position!!
Contact info: follow link

Last modified Sep. 13, 2026 10:21 PM by Sven Peter Näsholm

Hi everyone, my name is Caleb Caulk and I am joining the Digital Signal Processing and Image Analysis (DSB) and Visual Intelligence groups as a PhD fellow!

Last modified Aug. 10, 2026 10:32 PM by Sven Peter Näsholm

Hossein joins us as a guest from NTNU.

Last modified Aug. 9, 2026 11:32 PM by Sven Peter Näsholm

New DSB research recently accepted for BMVC 2026, suggests that large vision transformers may contain surprisingly long stretches of redundant computation, and that these can be collapsed into much smaller models without starting again from scratch.

Last modified July 16, 2026 4:31 PM by Sven Peter Näsholm

Congratulations to all authors of this paper published in Ultrasonics. This work addresses a core objective of researching ultrasound image reconstruction algorithms with state-of-the-art output quality, but at a radically decreased computational burden.

Last modified June 29, 2026 8:02 AM by Sven Peter Näsholm

Come join us – we currently have an open PhD position! It is fully funded. Do you have questions? Don't hesitate to reach out using the contact info provided in the announcement. There are also 7 additional open PhD positions within the Integreat & Trust projects where we participate. Application deadline 9 August.

Last modified June 23, 2026 4:23 PM by Sven Peter Näsholm

The 2026 DSB research group Kubb game Championships + barbecue are concluded!

Last modified June 11, 2026 5:26 PM by Sven Peter Näsholm

This paper has been published in IEEE Transactions on Ultrasonics. Authors: Anders Emil Vrålstad; Svein-Erik Måsøy; Tore Grüner Bjåstad; Anders Rasmus Sørnes; Ole Marius Hoel Rindal.

Last modified July 16, 2026 9:34 PM by Sven Peter Näsholm

Congratulations to all authors on this paper published in Earth and Space Science! This work addresses a core objective of the FRIPRO project Airborne Inversion of Rayleigh waves (AIR), headed by Quentin Brissaud.

Last modified May 9, 2026 7:19 PM by Sven Peter Näsholm

This paper has been published in Physics in Medicine & Biology by IOP Publishing. Authors: Mohamed Aziz Boukraa, Yücel Karabiyik, Andreas Austeng, Sverre Holm, and Sven Peter Näsholm. 

Last modified Apr. 14, 2026 12:07 PM by Sven Peter Näsholm

We congratulate (now Dr.) Sri Nivas Chandrasekaran on his great PhD defence 25 March 2026!

Last modified Mar. 17, 2026 1:12 PM by Anis Yazidi

A new paper has been accepted at AAMAS 2026: the 25th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2026).

Last modified Mar. 10, 2026 10:54 PM by Sven Peter Näsholm

Happy to share that this paper is accepted for the ICLR 2026 Workshop on Principled Design for Trustworthy AI—Interpretability, Robustness, and Safety across Modalities.

Last modified Mar. 8, 2026 12:58 AM by Sven Peter Näsholm

"A Coherence-Restoring Subspace Projection for Adaptive Array Spectral Estimation" is now published by IEEE Access,

Last modified Mar. 8, 2026 12:06 AM by Sven Peter Näsholm

"Listening to the Atmosphere: Using Infrasound Observations to Infer Atmospheric Conditions" is now published by the Journal of Geophysical Research: Atmospheres.

Last modified Mar. 4, 2026 5:54 PM by Ali Ramezani-Kebrya

ICLR 2026 Workshop on Multimodal Intelligence "Can Vision Models Process Physiological Signals? Exploring Visual Tokenization as a Representation Interface" by Frida Marie Engøy Westby, Li Meng, Anis Yazidi, and Ali Ramezani-Kebrya

Last modified Mar. 2, 2026 11:09 PM by Sven Peter Näsholm

We are pleased to announce that our article titled “Delay-and-Sum Consistent Wavenumber Algorithm” has been accepted for publication in IEEE Transactions on Ultrasonics. The work is authored by Sufayan Mulani, Mahsa Sotoodeh, Andreas Austeng, and Sven Peter Näsholm from our Digital Signal Processing and Image Analysis (DSB) group at the University of Oslo.

 

Last modified Feb. 21, 2026 11:09 PM by Adín Ramírez Rivera

"MIM Representations Encode Non-Semantic Noise: Post-Hoc Suppression Boosts Zero-Shot Performance" by Martine Hjelkrem-Tan, Mariuas Aasan, Rwiddhi Chakraborty, Gabriel Arteaga, Changkyu Choi, Adín Ramírez Rivera

Last modified Mar. 2, 2026 11:10 PM by Sven Peter Näsholm

The external committee has approved Anis Yazidi's application to become full Professor at University of Oslo.

Last modified Feb. 11, 2026 12:30 PM by Sven Peter Näsholm

We congratulate (now Dr.) Marius Aasan on his excellent PhD defence!

Last modified Mar. 2, 2026 11:10 PM by Sven Peter Näsholm

Very pleased to inform that two Summer Student Projects have been funded for this project in our DSB group through UiO Energy:

Project 4: Energy-efficient Large-scale Inference (Natural Sciences)

Application Link 

You will work closely with our stellar PDF (Christina Runkel) and PhD Candidates (Adrian Duric and Tobias Oskar Müller) and involve in projects targeting ICLR submissions at the end of summer. 

Very impactful direction for Green AI!!!

Sample of our group's MS students/interns:

Frida Marie Engøy Westby (First author of ICML submission)

Kjetil Karstensen Indrehus (First author of ICML submission)

Preben Nicholai Castberg (co-author of an upcoming NeurIPS submission)

Brage Eilertsen (First author of AAAI 26 paper)

Røskva Bjørgfinsdóttir (co-author of AAAI 26 paper)

Iman Tabrizian (co-first author of NeurIPS20 paper, currently full-time engineer at NVIDIA)

Next one maybe You?! 

Last modified Mar. 26, 2026 11:11 PM by Sven Peter Näsholm

Come join us – we currently have several open PhD positions! All are fully funded. Do you have questions? Don't hesitate to reach out to the contact persons listed for each position – please refer to the actual position name and code when you take contact.

Last modified Mar. 2, 2026 11:09 PM by Sven Peter Näsholm

Christina Runkel is joining our team as a Postdoctoral research fellow.

Last modified Feb. 4, 2026 2:04 PM by Sven Peter Näsholm

"Why Prototypes Collapse: Diagnosing and Preventing Partial Collapse in Prototypical Self-Supervised Learning" by Gabriel Y. Arteaga, Marius Aasan, Rwiddhi Chakraborty, Martine Hjelkrem-Tan, Thalles Silva, Michael Kampffmeyer and Adín Ramírez Rivera was accepted at ICLR 2026!

Last modified Feb. 4, 2026 2:04 PM by Sven Peter Näsholm

CogniLoad: A Synthetic Natural Language Reasoning Benchmark With Tunable Length, Intrinsic Difficulty, and Distractor Density by Daniel Kaiser, Arnoldo Frigessi, Ali Ramezani-Kebrya, and Benjamin Ricaud is accepted at ICLR 2026!

Last modified Jan. 26, 2026 11:47 AM by Sven Peter Näsholm

We congratulate Ole Jacob Lorenzen on his excellent PhD defence!

Last modified Feb. 1, 2026 11:54 AM by Sven Peter Näsholm

We are so happy for Marius Aasan who will defend his PhD soon! His thesis asks the question: Why does artificial intelligence still analyze images as grids of pixels?

Last modified Jan. 18, 2026 1:53 AM by Sven Peter Näsholm

We congratulate Hani Nozari Mirar on his excellent PhD defence!

Last modified Jan. 18, 2026 1:47 AM by Sven Peter Näsholm

We congratulate Håvard Kjellmo Arnestad on his excellent PhD defence!

Last modified Jan. 18, 2026 10:36 PM by Sven Peter Näsholm

We are so happy for Ole Jacob Lorenzen who will defend his PhD soon!

Last modified Jan. 6, 2026 11:32 AM by Sven Peter Näsholm

DSB has been awarded funding through the UiO:Life Science internationalization support call to establish new research collaborations with the University of Bordeaux, France. 

Last modified Jan. 4, 2026 12:37 AM by Sven Peter Näsholm

We are so happy for Håvard Kjellmo Arnestad who will defend his PhD soon!

Last modified Jan. 4, 2026 12:32 AM by Sven Peter Näsholm

We are so happy for Hani Nozari Mirar who will defend his PhD soon!

Last modified Dec. 19, 2025 12:54 AM by Sven Peter Näsholm

We congratulate Børge Solli Andreassen on his excellent PhD defence!

Last modified Dec. 13, 2025 7:43 PM by Sven Peter Näsholm

Support through AURORA helps to establish and expand contact between Norwegian research organisations and similar organisations in France. Mohamed Aziz Boukraa from our group leads the AURORA project Full-Waveform Inversion for Dam Safety which has been granted funding from the AURORA call in 2025. 

Last modified Dec. 6, 2025 10:56 PM by Sven Peter Näsholm

We are so happy for Børge Solli Andreassen who will defend his PhD soon!

Last modified Dec. 3, 2025 10:04 AM by Røskva Bjørgfinsdóttir

Our paper “Aligning Attention with Human Rationales for Self-Explaining Hate Speech Detection” has been accepted to the Association for the Advancement of Artificial Intelligence (AAAI) conference 2026.

The master students Brage Eilertsen and Røskva Bjørgfinsdóttir from the University of Oslo will present new research on explainable and fair natural language processing, developed in collaboration with Francielle Vargas (University of São Paulo) and Ali Ramezani-Kebrya from the DSB research group.

Last modified Dec. 1, 2025 5:33 PM by Sven Peter Näsholm

Tobias Müller is joining our team as a PhD research fellow.

Last modified Dec. 1, 2025 12:12 AM by Sven Peter Näsholm

Congratulations to Marouchka Froment and co-authors on this paper published in Communications Earth & Environment. The proof-of-concept demonstrated in this work addresses the core objective of the FRIPRO project Airborne Inversion of Rayleigh waves (AIR), headed by Quentin Brissaud.

Last modified Dec. 1, 2025 12:17 AM by Sven Peter Näsholm

Anis Yazidi who joined our team this year is already setting the standards high. The yearly summary of research output registered in the Norwegian national database lists Anis at a rank of around 150 among the country's researchers, in terms of publication points for 2023 and 2024. Congratulations! 

Last modified Dec. 1, 2025 12:10 AM by Sven Peter Näsholm

The Annual Conference on Neural Information Processing Systems (NeurIPS) soon takes place in San Diego. We congratulate Ali Ramezani-Kebrya from our group who got the top 10% Area Chair Recognition!

Last modified Nov. 26, 2025 2:32 PM by Sven Peter Näsholm

New postdoc Durgesh Singh presents his PhD work.

 

Last modified Nov. 26, 2025 1:24 PM by Sven Peter Näsholm

Sophus Bredesen Gullbekk will present his MSc project: "The Global Morphology of Infrasound on Venus: Propagation from Volcanic Sources to Balloon-borne Sensors" on 1 December.

Last modified Nov. 21, 2025 1:22 PM by Sven Peter Näsholm

Philip Hoel will present his MSc project "Supervoxel Graph Networks for Video Action Recognition"

Last modified Oct. 28, 2025 10:23 AM by lenkeretter@localhost

DSB at ICCV 2025: Presentations, workshops, and conversations that move the field. The International Conference on Computer Vision (ICCV) was organized in Honolulu, Hawai'i, 19-23 October. Some highlights from our research group's participation:

Last modified Oct. 21, 2025 11:11 AM by Sven Peter Näsholm

Preetraj Bhoodoo, PhD research fellow with DSB and the Visual Intelligence centre, won the Best Poster Presentation Award at the PRESIMAL Autumn Research School.

Last modified Nov. 17, 2025 9:12 AM by Gry Luke Muggerud

We have a PhD position in deep learning for imaging open in our research group and the Visual Intelligence centre.

Last modified Oct. 11, 2025 4:38 PM by Sven Peter Näsholm

We welcome our new Visual Intelligence center PhD research fellow Boye Gravningen Sjo.

Last modified Oct. 2, 2025 8:57 PM by Sven Peter Näsholm

We are proud of our contributions at the 2025 IEEE International Ultrasonics Symposium (IUS) in Utrecht in September.

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

"Differentiable Hierarchical Visual Tokenization" by Marius Aasan, Martine Hjelkrem-Tan, Nico Catalano, Changkyu Choi and Adín Ramírez Rivera was accepted as a Spotlight paper at NeurIPS 2025!

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Artur Radzivil joins us as a guest from Vilnius Gediminas Technical University.

Last modified Oct. 5, 2026 3:49 PM by lenkeretter@localhost

Our research group Digital signal processing and image analysis will present open MSc project topics, ideas, and themes on 22 September from 16h.

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Hi everyone,
My name is Adrian Duric, and I have just joined the DSB research group as a doctoral research fellow.

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Our paper "Low-Rank Adaptations for increased Generalization in
Foundation Model features" will be presented at COMPAYL, MICCAI.

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Congratulations to our Visual Intelligence postdoc in residence Changkyu Choi, Adín Ramírez Rivera, and all involved for winning this research grant!

Last modified Oct. 11, 2025 4:29 PM by Sven Peter Näsholm

[These two positions are now filled]

We have one PhD and one postdoctoral position open in the DSB research group and the Norwegian Centre for Knowledge-driven Machine Learning (Integreat).

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

We're so proud of Gábor Geréb who has successfully defended his PhD thesis Beamforming Bounds. Congratulations!

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Andreas Kleppe has received the new prestigious grant "ENDPATH – End-to-End Pathology" from the FRIPRO basic research programme of the Research Council of Norway. Congratulations from all of us in the DSB group on this great achievement!

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Mathias Horvati Svoren presents his master thesis titled "Towards Infrasound-Based Estimation of the Stratospheric Polar Vortex and Microbarom Source Regions" on Thursday 19 June at 10:00 in Seminarrom Python (room 2269).

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

The 2025 DSB research group Kubb game Championships + barbecue are concluded.

Last modified Oct. 2, 2025 8:47 PM by lenkeretter@localhost

Simon Andreas Bjørn presents his master thesis titled "Ultrasound Localization Microscopy with Adaptive Beamformers" on Thursday at 13:00 in Seminarrom Postscript.

Last modified June 12, 2025 2:40 PM by Sven Peter Näsholm

Gábor Geréb is defending his PhD thesis and giving his trial lecture on Wednesday 25 June.

Last modified June 12, 2025 2:31 PM by Sven Peter Näsholm

Work presented at the 2024 Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium has been peer-reviewed and is now published in the IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control!

Last modified June 12, 2025 9:36 AM by Sven Peter Näsholm

Have you ever wondered how any two-way beampattern can be achieved? The just-published paper "Joint design of transmit and receive array window functions via polynomial factorization" in Signal Processing explains it!

Last modified June 11, 2025 11:30 PM by Sven Peter Näsholm

The national 10-year evaluation to identify and confirm the quality and the relevance of research in Mathematics, ICT, and Technology (EVALMIT) published its report earlier this spring. We are happy to read that our research group is highlighted as a top-performing group – together with the Visualization research group at University of Bergen.

To all our partners in industry and academia and to all former and current group members: Thank you for the great contributions and for working with us! 

Last modified June 10, 2025 10:12 AM by Sven Peter Näsholm

We look very much forward to presenting our papers at the IEEE International Ultrasonics Symposium in September. See you in Utrecht!

Last modified May 2, 2025 8:07 AM by Sven Peter Näsholm

We got three papers accepted for the International Conference on Machine Learning (ICML) in 2025!

Last modified Apr. 25, 2025 10:59 AM by Sven Peter Näsholm

We had a great dinner together, funded by our team's third prize in the Algorithms for Mapping Elastic Modulus (a-MEM) Challenge at the 2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium.

Last modified Apr. 24, 2025 6:48 PM by Sven Peter Näsholm

The proposal “Machine Learning in Real World (MLReal)» has been granted funding from the Research Council of Norway basic research funding programme "FRIPRO" and its call for early-career scientists.

Last modified Mar. 17, 2025 8:35 AM by Sven Peter Näsholm

Chaoran Han; Sven Peter Näsholm; Andreas Austeng; Håvard Kjellmo Arnestad. Taylor-Series Based Derivation of the Resolution of Null Subtraction Imaging for a Uniform Linear Array. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control 

Last modified Feb. 3, 2025 4:03 PM by Zhiyuan Wu

Zhiyuan Wu*, Changkyu Choi*, Xiangcheng Cao, Volkan Cevher, Ali Ramezani-Kebrya, “Addressing Label Shift in Distributed Learning via Entropy Regularization”, International Conference on Learning Representations (ICLR), 2025.

 

Last modified Dec. 8, 2024 1:03 PM by Gabriel Yanci Arteaga

Gabriel Y. Arteaga, Thomas B. Schön, Nicolas Pielawski (2025). Hallucination Detection in LLMs: Fast and Memory-Efficient Fine-Tuned Models. Northern Lights Deep Learning Conference. 

Last modified Nov. 18, 2024 2:39 PM by Yücel Karabiyik

Researchers from DSB get NOK 50 000 as early phase innovation support to develop their idea further.

Last modified Nov. 14, 2024 5:35 PM by Sven Peter Näsholm

We're happy to announce that Ali Ramezani-Kebrya from our DSB research group will serve as an Action Editor for Transactions on Machine Learning Research (TMLR). 

TMLR provides a fast-turnaround journal that caters to a broader range of manuscripts, specifically including short-form submissions that are common at ML conferences. Notably, TMLR’s review process is hosted by OpenReview, and therefore is open and transparent to the community. TMLR is a member of the broader Journal of Machine Learning Research (JMLR) family of dissemination channels. 

Last modified Nov. 9, 2024 12:08 PM by Sven Peter Näsholm

Raphael F Garcia, Iris van Zelst, Taichi Kawamura, Sven Peter Näsholm, Anna Catherine Horleston, Sara Klaasen, Maxence Lefevre, Céline Marie Solberg, Krystyna T Smolinski, Ana-Catalina Plesa, Quentin Brissaud, Julia S Maia, Simon C Stähler, Philippe Lognonné, Mark Paul Panning, Anna Gülcher, Richard Ghail, Barbara De Toffoli (2024). Seismic wave detectability on Venus using ground deformation sensors, infrasound sensors on balloons and airglow imagers. Earth and Space Science, 11, e2024EA003670.

Last modified Nov. 9, 2024 7:04 AM by Sven Peter Näsholm

Thygesen, Sander Bøe, Tore Lie Sirevaag, and Sven Peter Näsholm. "Estimating annulus sealing properties using the flexural wave spectrum in pitch-catch well-logging." Ultrasonics (2024): 107491.

Last modified Nov. 1, 2024 1:31 PM by Gabriel Yanci Arteaga

Lunch Brings Together PhD Students Across Research Groups

Last modified Sep. 25, 2024 10:46 PM by Sven Peter Näsholm

We welcome our new postdoctoral research fellow Aziz

Last modified Sep. 20, 2024 11:17 PM by Sven Peter Näsholm

We're proud of our four papers in the upcoming 2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium:

Last modified Sep. 20, 2024 6:17 PM by Sven Peter Näsholm

Ghadi Al Hajj successfully defended his Phd Improving the Generalization of Machine Learning Models through the Incorporation of Domain Priors and Constraints.

Last modified Oct. 5, 2026 3:49 PM by lenkeretter@localhost

Time: Thursday 19 September 2024, starting from 16h15

Place: Python, OJD (the Informatics building, second floor)

Last modified Sep. 2, 2024 9:30 AM by Sven Peter Näsholm
Last modified Aug. 31, 2024 12:26 AM by Sven Peter Näsholm

We're so glad that Chaoran is starting his PhD with us!

Last modified Aug. 31, 2024 12:20 AM by Sven Peter Näsholm

We are glad to welcome Preetraj Bhoodoo, who recently started as a Visual Intelligence doctoral research fellow with us at DSB.

Last modified Aug. 22, 2024 1:55 PM by haavaarn@uio.no

In this article, we propose applying a KDE-based method to estimate speckle PDFs in medical ultrasound imaging. The method is practically tuning-free and leverages the Box-Cox transformation to achieve best-in-class performance across a wide range of test cases.

Last modified Aug. 22, 2024 1:53 PM by Sven Peter Näsholm

The Vision Transformer (ViT) signifies a new direction in modelling spatial data, representing a shift in focus from local spatial interactions to global contextual relationships. Traditionally, ViTs partition images into square patches to extract tokenized features. But is this necessarily an optimal way of partitioning images for transformers?

Code & preprint links:

Last modified Aug. 22, 2024 1:53 PM by Sven Peter Näsholm
Last modified Aug. 22, 2024 1:52 PM by Sven Peter Näsholm

Kudos to Tollef Jahren on the successful defense of his PhD thesis this semester!

Last modified Aug. 22, 2024 1:52 PM by Sven Peter Näsholm

Congratulations to Ole-Johan Skrede for successfully defending his PhD thesis this semester!

Last modified June 17, 2024 10:28 AM by Sven Peter Näsholm

Celine Solberg presenterer sitt MSc prosjekt Detection Probability of Venusquakes using Balloon-Borne Acoustic Sensors - Improving Detectability with Array Signal Processing.

Last modified June 11, 2024 8:10 AM by Andreas Austeng

Chaoran Han, is presenting his MSc project Evaluating the Null-Subtraction Imaging Beamformer From the Perspective of Spectral Estimation.

Last modified June 11, 2024 8:55 AM by Andreas Austeng

Maria Opperud presenterer sitt MSc prosjekt Grating lobe errors in synthetic aperture sonar images.

Last modified May 3, 2024 9:00 PM by Sven Peter Näsholm

We congratulate Adín Ramírez Rivera for his promotion to become full professor!

Last modified Jan. 22, 2024 10:11 AM by lenkeretter@localhost

We greet our guest researcher Oscar Bryan.

Last modified Jan. 4, 2024 5:28 PM by Sven Peter Näsholm

We greet our new PhD research fellow Amir Arfan.

Last modified Oct. 29, 2023 10:56 AM by Sven Peter Näsholm

Thalles Silva and Adín Ramírez Rivera will present at NeurIPS 2023

Last modified Oct. 29, 2023 12:51 PM by Sven Peter Näsholm

A Gracious Bow to our SelfGraphVQA team at the VLAR Workshop,  ICCV 2023

Last modified Oct. 28, 2023 12:42 PM by Sven Peter Näsholm

We're so proud of our postdoc Sarina and co-authors for the work winning the MICCAI ASMUS workshop 2023 presentation/poster award.

Last modified Oct. 12, 2023 1:50 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Vilde Schulerud Bøe!

Last modified Aug. 24, 2023 10:30 PM by Sven Peter Näsholm

We look forward to the PhD defence of Stine Hverven Thon on Thursday 31 August.

Last modified Aug. 11, 2023 9:01 AM by Sven Peter Näsholm
Last modified Aug. 10, 2023 11:22 AM by Sven Peter Näsholm
Last modified Aug. 1, 2023 9:18 AM by Sven Peter Näsholm

Our PhD candidate Håvard Kjellmo Arnestad has won the prestigious Martin Landrø Prize for his outstanding MSc thesis in physics.

Last modified June 26, 2023 10:57 PM by Sven Peter Näsholm

Håvard Kjellmo Arnestad, Gábor Geréb, Tor Inge Birkenes Lønmo, Jan Egil Kirkebø, Andreas Austeng, Sven Peter Näsholm; Worst-case analysis of array beampatterns using interval arithmetic. J Acoust Soc Am 1 June 2023; 153 (6): 3312–3323

Last modified June 19, 2023 8:53 AM by Sven Peter Näsholm

Sverre Hartveit is presenting his MSc project Investigating window-length and array processing recipes in microbarom direction-of-arrival estimation.

Last modified June 19, 2023 8:38 AM by Sven Peter Näsholm

Helene Wold, is presenting her MSc project Parameters of the Capon beamformer in medical ultrasound imaging.

Last modified Apr. 26, 2023 12:23 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Seçkin Polat!

Last modified Mar. 24, 2023 3:08 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Sufayan Mulani!

Last modified Dec. 17, 2022 7:59 PM by Sven Peter Näsholm

We welcome our new Associate Professor Ali Ramezani!

Last modified Oct. 18, 2022 8:26 PM by Sven Peter Näsholm

We welcome our new guest research fellow Bruno Souza!

Last modified Oct. 5, 2026 3:49 PM by lenkeretter@localhost

We present open master project opportunities available with the Digital Signal Processing and Image Analysis research group (DSB) and partners.

Vi presenterer muligheter til master-prosjektoppgaver i gruppa for Digital Signalbehandling og Bildeanalyse (DSB) og samarbeidspartnere.

Last modified July 12, 2022 10:08 AM by Sven Peter Näsholm

We congratulate three of our PhD research fellows and their co-authors for well-deserved rewards at recent conferences!

Last modified May 5, 2022 12:47 AM by Sven Peter Näsholm

We welcome our new PhD research fellow Martine Tan!

Last modified July 1, 2022 9:41 AM by Sven Peter Näsholm
We welcome our new PhD research fellow Marius Aasan!
Last modified Jan. 7, 2022 12:18 PM by Sven Peter Näsholm

We welcome our new Associate Professor Adín Ramírez Rivera!

Last modified Oct. 4, 2021 8:01 AM by Sven Peter Näsholm

We welcome our new PhD research fellow Dhananjay Tomar!

Last modified Aug. 26, 2021 10:26 PM by Sven Peter Näsholm

We welcome our new PhD research fellow James Claxton!

Last modified Aug. 20, 2021 10:53 AM by Sven Peter Näsholm

We welcome our new Postdoctoral research fellow Sarina Thomas!

Last modified Aug. 17, 2021 1:36 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Håvard Arnestad!

Last modified Aug. 14, 2021 11:13 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Fabian Bull!

Last modified Aug. 14, 2021 11:14 PM by Sven Peter Näsholm

We welcome our new PhD research fellow Gabor Gereb!

Last modified June 28, 2021 10:05 AM by Sven Peter Näsholm
Last modified June 27, 2021 9:46 PM by Sven Peter Näsholm
Last modified June 22, 2021 8:57 AM by Sven Peter Näsholm

Ane presenterer sin masteroppgave The Six Spot Step Test for patients with Multiple Sclerosis onsdag 23. juni.

Last modified May 31, 2021 7:26 PM by Sven Peter Näsholm

I høstsemesteret 2021 vil DSB-gruppa gi et nytt kurs i Ultralydavbildning.

Last modified June 23, 2021 2:01 PM by Sven Peter Näsholm

Stig Synnes and Andrew Gilbert will defend their PhD theses.

Last modified May 18, 2021 9:37 AM by Sven Peter Näsholm

There are open summer job opportunities with our industry partner GE Healthcare:

Last modified May 7, 2021 8:14 AM by Sven Peter Näsholm

Antoine Blachet will defend his thesis

Swath sonar: Advanced waveform modulation and associated signal processing techniques

on 21 May. The defense will take place over Zoom, while the trial lecture will be pre-recorded and made available a couple of days beforehand.

Last modified Apr. 26, 2021 9:32 AM by Sven Peter Näsholm

Vi søker 2 studenter som kan jobbe 200 timer hver under sommeren 2021.

Prosjektet har fokus på utvikling relatert til integrasjon av databeregninger i det nye kurset Ultralydavbilding (IN3015/IN4015). Her inngår for eksempel å tilrettelegge for at kursets deltakere får mer konkret hands-on-erfaring i signalbehandling, datavisualisering, og simulering av bølgeforplanting samt hvordan dette integreres i ultralydavbildningssystemer med spesielt fokus på medisinske applikasjoner.

Vi vill i stor grad bruke prosesseringsplattformen UltraSound Toolbox i dette arbeid https://www.ustb.no/

 

Last modified Feb. 14, 2021 1:42 PM by Sven Peter Näsholm

We have updated our list of PhD and MSc alumni from our group.

Last modified Oct. 1, 2020 3:40 PM by Sven Peter Näsholm

Kaja F. Kvåle will be defending her thesis Detection of mechanical waves in the left ventricle using high frame rate imaging on October 13.

Pleases read this news item on the Department web for information on how to join the fully digital defense and trial lecture.

Last modified Dec. 11, 2018 1:23 PM by Andreas Austeng

Improved mapping rate in seabed mapping with sonar. 

Committee: Helge Balk and Sverre Holm.

Main supervisor: Roy Edgar Hansen. Co-supervisors: Andreas Austeng, Fabrice Prieur, Alan Hunter (University of Bath/Ifi) and Frank Tichy (Kongsberg Maritime).

Last modified Nov. 28, 2017 11:37 AM by Sverre Holm

Non-invasive monitoring of intracranial pressure from transcranial acoustic signals

Committee: Geir Andre Ringstad and Andreas Austeng

Main supervisor: Per Kristian Eide. Co-supervisors: Sverre Holm and Fabrice Prieur

Last modified Nov. 29, 2017 9:53 AM by Andreas Austeng

Visualization and quantification of scar tissue in the myocardium using echocardiography

Committee: Espen Remme and Andreas Austeng

Main supervisor: Eigil Samset. Co-supervisor: Thor Edvardsen

Last modified Nov. 30, 2017 8:36 PM by Andreas Austeng

Ultrasound imaging for improved segmentation. 

Committee: Eigil Samseth and Sverre Holm.

Main supervisor: Andreas Austeng. Co-supervisor: Anne Solberg.

Last modified Nov. 28, 2017 11:35 AM by Sverre Holm

Modelling and removal of time-varying sea-surface and overburden effects in multi-component data. 

Committee: Leiv J. Gelius and Fabrice Prieur.

Main supervisor: Walter Söllner (PGS). Co-supervisors: Anthony Day (PGS), Morten W. Pedersen (PGS), Endrias G. Asgedom (PGS), Roy Edgar Hansen, and Andreas Austeng.

 

Last modified Nov. 29, 2017 9:33 AM by Sverre Holm

Medical ultrasound imaging using shear wave elastography.

Committee: Bastien Denarie and Fritz Albregtsen

Main supervisor: Sverre Holm. Co-supervisors: Andreas Austeng and Fabrice Prieur

Last modified May 5, 2017 11:58 AM by Andreas Austeng

Magnus Vallestad, final exam for MSc project "Coregistration and Fusion of Interferometric Synthetic Aperture Sonar Data From Multiple Passes".

Sensor: Trygve Sparr, FFI

Internal sensor: Fritz Albregtsen

Supervisors: Roy Edgar Hansen (FFI), Torstein Olsmo Sæbø (FFI), and Andreas Austeng.

Last modified Feb. 25, 2020 10:44 AM by lenkeretter@localhost

We have been granted a new project: FORCE - Imaging the Force of Cancer.

Last modified Oct. 28, 2014 2:17 PM by Andreas Austeng

Total Pressure Wavefield Computation for Rough Sea-Surfaces

Last modified Oct. 23, 2014 3:54 PM by Sverre Holm

Diffraction effects in sonar array

Last modified Oct. 23, 2014 3:51 PM by Sverre Holm

Near-field Characterization of Sonars

Last modified Sep. 9, 2014 1:29 PM by Sverre Holm

Bradley Treeby, University College of London 

The accurate simulation of wave propagation in tissue realistic media has many applications in ultrasonics and photoacoustics. In this talk, I will give an overview of the open-source k-Wave Toolbox and it's application to time-domain simulations. The governing equations and numerical methods will be introduced, including the use of spatial fractional derivatives to account for acoustic absorption. Finally, I will discuss applications of the models in photoacoustic image reconstruction and exposimetry for high-intensity focused ultrasound.

Last modified May 19, 2014 1:54 PM by Andreas Austeng

Mohammad Ghasemi, final exam for MSc project "Sensitivity Analysis of a Two Component Seismic Streamer"

Sensor: Johan-Fredrik Synnevåg, Statoil ASA. Veiledere: Bent Kjellesvig, Kemal Ozdemir. Medveileder: Andreas Austeng.

ElDat master, Signalbehandling

Last modified Aug. 22, 2024 9:43 AM by Yücel Karabiyik

Touchless gestures like scrolling and advancing a photo or music track are going to get a lot more interesting, according to Elliptic Labs, seen at CES 2014.

Elliptic Labs is a spin-off from our group at the Department of Informatics. 

Check out their website 

 

Last modified Oct. 11, 2013 2:27 PM by Andreas Austeng

Jacob Norenberg, final exam for MSc project "Analysis of time variations of cardiac ultrasound image sequences".

Sensor: Andreas Heimdal, GE Vingmed Ultrasound. 

Supervisors: Eigil Samseth and  Andreas Austeng.

Last modified Mar. 18, 2013 11:48 AM by Sverre Holm

Congratulations to Anne with the paper "Remote Sensing of Ocean Oil-Spill Pollution" in special issue of Proceedings of the IEEE on Remote Sensing of Natural Disasters (Oct 2012). Proceedings of the IEEE is the flagship journal of the IEEE.

Last modified Mar. 5, 2013 12:42 PM by Sverre Holm

From integral of one-and-a-half order to understanding of a physical/geometrical meaning of a fractional integral with complex exponent

Last modified Feb. 28, 2013 3:21 PM by Sverre Holm

New relationships between spatial fractional integrals and fractal objects

Raoul Nigmatullin, Kazan University, Russia

Last modified Feb. 25, 2020 10:44 AM by lenkeretter@localhost

Bølgehastigheten i ultralydmålingene øker jo farligere svulsten er.

Les om forskningen til Sverre Holm og Peter Näsholm i Apollon.

Last modified Dec. 17, 2012 8:08 AM by svein@uio.no

Loránd Eõtvõs Award 2012 presented to Leiv-J. Gelius (Department of Geosciences) and Endrias Asgedom (Department of Informatics) for the paper:

Gelius, L.-J. and Asgedom, E. (2011), Diffraction-limited imaging and beyond – the concept of super resolution. Geophysical Prospecting, Volum 59: 400–421.

More information.

Last modified Oct. 16, 2012 9:53 AM by Andreas Austeng

Prof. Robin Cleveland from University of Oxford will on Friday morning give a guest lecture on high intensity ultrasound imaging. Later the same day he will be one of the opponents when Fabrice Prieur defends his PhD.  

Last modified Oct. 16, 2012 9:52 AM by Andreas Austeng

Prof. Jens Hovem from NTNU will on Thursday give a guest lecture on Biot-theory. On Friday, he will be one of the opponents when Fabrice Prieur defends his PhD. 

Last modified Sep. 13, 2012 1:57 PM by Andreas Austeng

Stig Synnes har som en del av PhD-graden et egetdefinert emne i klassisk spredningsteori. Eksamensformen i emnet er et  et halv times foredrag med påfølgende spørsmål. Foredraget er åpent for alle!

Last modified Jan. 30, 2012 3:12 PM by jpaasen@uio.no

A short presentation on adaptive volume rendering of cardiac 3D ultrasound images, utilizing blood pool statistics will be given.

Last modified Jan. 25, 2012 3:48 PM by Sverre Holm

Lunch seminar where Wei Zhang will talk about "Efficient Computation of Initial Value Problem Involving Fractional Derivative"

Last modified Jan. 19, 2012 11:57 AM by fabrice@uio.no

Fabrice Prieur will give a presentation about a model for 3D simulation of parametric ultrasound fields this friday.

Last modified Dec. 8, 2011 3:28 PM by Sverre Holm

Eivind Stordal, final exam for MSc project "Power-law attenuation of acoustic waves in random stratified viscoelastic media"

Modellering og dataanalyse, Studieretning Statistikk og dataanalyse

Last modified Dec. 8, 2011 2:20 PM by Sverre Holm
Last modified Sep. 20, 2011 9:18 AM by svein@uio.no

The paper "Adaptive Beamforming Applied to a Cylindrical Sonar Array Using an Interpolated Array Transformation" by Ann E. A. Blomberg, Andreas Austeng and Roy Edgar Hansen, has been accepted for publication in IEEE Journal of Oceanic Engineering.

Last modified Sep. 12, 2011 1:15 PM by sigrunv@uio.no
Last modified Aug. 18, 2011 9:41 AM by svein@uio.no