Fredrik Bajers Vej 5
Postboks 159 9100 Aalborg
Telefon: 9940 9940
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22.06.2017 kl. 13.00 - 16.00
Algorithms for Reconstruction of Undersampled Atomic Force Microscopy images
An atomic force microscope is capable of measuring the topography of a surface on a nano meter scale by moving a cantilever with a tiny tip at its end across the surface. The flexibility in the choice of the scan pattern, that the cantilever follows, allows for undersampling of the surface, i.e. measuring only a part of the surface. In order to display an image of the entire surface, algorithms for reconstructing the missing parts are required. Such algorithms provide a description of the computations needed to estimate the topography of the entire surface being imaged. If the time it takes to do the computations is small compared to the time saved by only acquiring a part of the surface, a speed-up in the entire imaging process is achievable. An image acquisition speed-up may potentially enable applications such as surface “pre-viewing”, video-rate imaging, or super resolution imaging.
We describe and discuss algorithms for reconstructing undersampled atomic force microscopy images or other similar types of high dimensional signals. In particular, our contributions relate to the design of algorithms that not only exploit sparsity but structured sparsity. That is, algorithms that exploit the structure in prior information about an image to guide the reconstruction of the image. We show that such structure may be used to improve the estimate of the full topography surface compared to the estimate obtained by algorithms relying only on sparsity.
Since our proposed algorithms are primarily evaluated empirically through simulations, a major part of our work has been devoted to ensuring correctness and reproducibility of our computational results. Towards this end, we present our proposed methods for storing experiment metadata and applying best practices to obtain reproducible and correct computational results.
Associate Professor Zheng-Hua Tan, Aalborg University, Denmark (Chairman)
Senior Principal Research Scientist Petros T. Boufounos, Mitsubishi Electric Research laboratories, USA
Professor Lars Kai Hansen, Technical University of Denmark
Professor Torben Larsen, Aalborg University, Denmark
Associate Professor Thomas Arildsen, Aalborg University, Denmark
Associate Professor Lars Bo Larsen, Aalborg University, Denmark
After the defence there will be a reception at Fredrik Bajers Vej 7, B4-211
Free of charge
Signal and Information Processing, Department of Electronic Systems
Aalborg University, Fredrik Bajers Vej 7B 3-104
15.08.2017 kl. 08.00 - 18.08.2017 kl. 18.00
From 15-18 August 2017, the 29th Congress of Nordic Historians will take place at Aalborg Congress & Culture Centre, Denmark. The main organisers are the Centre for History at the Department for Culture and Global Studies at Aalborg University, the Danish Historical Society and the Nordic Committee for Historians.
18.08.2017 kl. 13.00 - 16.00
Klinisk Institut, Aalborg Universitet og Aalborg Universitetshospital har den glæde at invitere til ph.d.-forsvar ved læge Lasse Jørgensen Cehofski, Øjenafdelingen, Aalborg Universitetshospital, som forsvarer ph.d.-afhandlingen: The Retinal Protein Profile in Experimental Branch Retinal Vein Occlusion - Interventions With an Intravitreal Anti-VEGF Agent and a Corticosteroid Implant
18.08.2017 kl. 13.00 - 16.00
Anitha Asamoah, Department of Chemistry and Bioscience, will defend her thesis on "Assessment of the Contamination Level of Persistent Organic Pollutants in Breast Milk of Ghanaian Women from a Polluted Area in Accra"
18.08.2017 kl. 13.00 - 16.00
18.08.2017 kl. 13.00 - 17.00
Maciej Plocharski will defend his ph.d. thesis: "Sulcal Morphology Analysis from MRI Data for Classification of Alzheimer’s Disease"
20.08.2017 kl. 18.00 - 22.08.2017 kl. 16.00
These are extraordinary times. Unprecedented and sustained tourism growth has transformed many cities across Europe while rural and regional areas remain unsure how they can better leverage the massive growth at their doorstep. The tourism industry is undergoing restructuring, new stakeholders are emerging, landscapes of power are shifting, and lines of responsibilities are being redrawn.
21.08.2017 kl. 13.00 - 16.00
21.08.2017 kl. 13.00 - 17.00
Steffan Wittrup Christensen will defend his Ph.D. thesis on "Neck pain – Sensory and motor effects during shoulder movements"
22.08.2017 kl. 08.00 - 24.08.2017 kl. 16.00
For the first time the Nordic Laser Materials Processing Conference is to be held in Aalborg and it is a great pleasure to invite laser scientists and industrial representatives to the 16th NOLAMP conference. We will do our best to make it an inspiring conference for researchers, industry and product developers and manufactures in the laser community.
22.08.2017 kl. 13.00 - 16.00
Farshad Badie will defend his thesis "A Theoretical Model for Meaning Construction through Constructivist Concept Learning - A Conceptual, Terminological, Logical and Semantic Study within Human-Human-Machine Interaction".
23.08.2017 kl. 09.00 - 24.08.2017 kl. 16.00
This PhD course is scheduled to follow up on the two day Tourism Education Futures Initiative (TEFI) Conference “Building our stories: Co-creating tourism futures in research and practice” (20-22 August 2017).
23.08.2017 kl. 10.00 - 15.00
Invitation to a research symposium on "Knees in the Balance - New Results in Knee Osteoarthritis Research"
24.08.2017 kl. 17.00 - 19.00
Hvordan kan ÆSTETISKE LÆREPROCESSER og KUNSTINTEGRERENDE PÆDAGOGIK åbne for nye måder at lære på? Mød kreativitetsforsker Julie Borup Jensen, der sammen med praktikere vil præsentere nye måder at lære på.
28.08.2017 kl. 09.00 - 29.08.2017 kl. 16.30
På Aalborg Universitet holdes hvert år sidst i august konferencen Trafikdage hvor 300 deltagere præsenterer forskningsresultater, analyser samt praktiske erfaringer fra transportsektoren. Deltagerne er både forskere & praktikere, men også politikere og presse – fordi det er vigtigt at understøtte dialog og udbygge netværk.
28.08.2017 kl. 13.00 - 16.00
Title of the thesis: Dwelling in Mundane Mobility: Caravanning in Denmark.