Ing. Hana Druckmüllerová, Ph.D.
E-mail:   druckmullerova.h@fme.vutbr.cz  Dept.:   Institute of Mathematics Dept. of Computer Graphics and Geometry Position:   Assistant Professor Room:   A1/1926

Publications:

• LÍZAL, F.; ELCNER, J.; BĚLKA, M.; JEDELSKÝ, J.; HOPKE, P.; ŠTARHA, P.; DRUCKMÜLLEROVÁ, H.; JÍCHA, M.:
  Measurement of Fiber Deposition in a Human Lung Model by Phase Contrast Microscopy with Automated Image Analysis,
  Engineering Mechanics, Vol.20, (2013), No.3/4, pp.187-194, ISSN 1802-1484, Association for Engineering Mechanics
  journal article - other
• POLZER, S.; GASSER, T.; FORSELL, C.; DRUCKMÜLLEROVÁ, H.; TICHÝ, M.; STAFFA, R.; VLACHOVSKÝ, R.; BURŠA, J.:
  Automatic Identification and Validation of Planar Collagen Organization in the Aorta Wall with Application to Abdominal Aortic Aneurysm,
  MICROSCOPY AND MICROANALYSIS, Vol.19, (2013), No.6, pp.1395-1404, ISSN 1431-9276, Cambridge Journals
  journal article - other
• MARTIŠEK, K.; DRUCKMÜLLEROVÁ, H.:
  A Numerical Method for the Visualization of the Fe XIV Emission in the Solar Corona Using Broadband Filters, IOP Publising
  journal article in Web of Science
• PASACHOFF, J.; RUŠIN, V.; SANIGA, M.; DRUCKMÜLLEROVÁ, H.; BABCOCK, B.:
  Structure and Dynamics of the 2009 July 22 Eclipse White-light Corona, IOP Publishing
  journal article in Web of Science
• DRUCKMÜLLEROVÁ, H.; MORGAN, H.; HABBAL, S.:
  ENHANCING CORONAL STRUCTURES WITH THE FOURIER NORMALIZING-RADIAL-GRADED FILTER, Chicago Journals
  journal article in Web of Science
• PASACHOFF, J.; RUŠIN, V.; DRUCKMÜLLEROVÁ, H.; SANIGA, M.; LU, M.; MALAMUT, C.; SEATON, D.; GOLUB, L.; ENGELL, A.; HILL, S.; LUCAS, R.:
  STRUCTURE AND DYNAMICS OF THE 2010 JULY 11 ECLIPSE WHITE-LIGHT CORONA, Chicago Journals
  journal article in Web of Science
• HABBAL, S.; DRUCKMÜLLER, M.; MORGAN, H.; DING, A.; JOHNSON, J.; DRUCKMÜLLEROVÁ, H.; DAW, A.; ARNDT, M.; DIETZEL, M.; SAKEN, J.:
  THERMODYNAMICS OF THE SOLAR CORONA AND EVOLUTION OF THE SOLAR MAGNETIC FIELD AS INFERRED FROM THE TOTAL SOLAR ECLIPSE OBSERVATIONS OF 2010 JULY 11, Chicago Journals
  journal article in Web of Science
• HABBAL, S.; DRUCKMÜLLER, M.; MORGAN, H.; DING, A.; JOHNSON, J.; DRUCKMÜLLEROVÁ, H.; DAW, A.; ARNDT, M.:
  The Coronal Imprints of Eruptive Prominences and CMEs as Revealed by the Total Solar Eclipse Observations of 11 July 2010,
  Bulletin of the American Astronomical Society, Vol.2011 (43), (2011), No.1, pp.1-5, ISSN 0002-7537, AAS USA
  journal article - other
• PASACHOFF, J.; RUŠIN, V.; DRUCKMÜLLER, M.; DRUCKMÜLLEROVÁ, H.; BĚLÍK, M.; SANIGA, M.; MINAROVJECH, M.; MARKOVÁ, E.; BABCOCK, B.; SOUZA, S.; LEVITT, J.:
  Polar Plume Brightening During the 2006 March 29 Total Eclipse,
  ASTROPHYSICAL JOURNAL, Vol.682, (2008), No.1, pp.638-643, ISSN 0004-637X, Chicago Journals
  journal article - other
• WOO, R.; DRUCKMÜLLEROVÁ, H.:
  Solar Eclipse Images and the Solar Wind,
  ASTROPHYSICAL JOURNAL, Vol.678, (2008), No.2, pp.149-152, ISSN 0004-637X, American Astronomical Society
  journal article - other
• DRUCKMÜLLER, M.; ANTOŠ, M.; DRUCKMÜLLEROVÁ, H.:
  Matematické metody vizualizace sluneční koróny,
  Jemná mechanika a optika, Vol.2005, (2005), No.10, pp.302-305, ISSN 0447-6441, AVČR
  journal article - other
• DRUCKMÜLLEROVÁ, H.:
  A new numerical method for solar corona image processing,
  I.A.P.P.P. Communications, Vol.2005, (2005), No.99, pp.1-4, I.A.P.P.P.
  journal article - other

List of publications at Portal BUT

Abstracts of most important papers:

• POLZER, S.; GASSER, T.; FORSELL, C.; DRUCKMÜLLEROVÁ, H.; TICHÝ, M.; STAFFA, R.; VLACHOVSKÝ, R.; BURŠA, J.:
  Automatic Identification and Validation of Planar Collagen Organization in the Aorta Wall with Application to Abdominal Aortic Aneurysm,
  MICROSCOPY AND MICROANALYSIS, Vol.19, (2013), No.6, pp.1395-1404, ISSN 1431-9276, Cambridge Journals
  journal article - other
  Arterial physiology relies on a delicate three-dimensional (3D) organization of cells and extracellular matrix, which is remarkably altered by vascular diseases like abdominal aortic aneurysms (AAA). The ability to explore the micro-histology of the aorta wall is important in the study of vascular pathologies and in the development of vascular constitutive models, i.e., mathematical descriptions of biomechanical properties of the wall. The present study reports and validates a fast image processing sequence capable of quantifying collagen fiber organization from histological stains. Powering and re-normalizing the histogram of the classical fast Fourier transformation (FFT) is a key step in the proposed analysis sequence. This modification introduces a powering parameter w, which was calibrated to best fit the reference data obtained using classical FFT and polarized light microscopy (PLM) of stained histological slices of AAA wall samples. The values of w = 3 and 7 give the best correlation (Pearson's correlation coefficient larger than 0.7, R 2 about 0.7) with the classical FFT approach and PLM measurements. A fast and operator independent method to identify collagen organization in the arterial wall was developed and validated. This overcomes severe limitations of currently applied methods like PLM to identify collagen organization in the arterial wall.
• MARTIŠEK, K.; DRUCKMÜLLEROVÁ, H.:
  A Numerical Method for the Visualization of the Fe XIV Emission in the Solar Corona Using Broadband Filters, IOP Publising
  journal article in Web of Science
  The goal of this article is to demonstrate how the emission from the Fe XIV 530.3 nm coronal emission line, also known as the green line, can be extracted from images taken during total solar eclipses with commercially available color cameras. This concept is technically feasible because Fe XIV is the brightest optical emission line in the inner corona, and because the sensors of these cameras are retrofitted with a standard Bayer mask, namely, a square grid of spectrally broad (about 100 nm) green, blue, and red filters in the ratio of 2:1:1. The technique presented here, and developed for this purpose, yields qualitatively accurate Fe XIV images, as tested by comparing with Fe XIV eclipse images taken with a 0.15 nm narrow-bandpass filter. While this approach cannot replace narrow-bandpass Fe XIV images for quantitative studies of the corona, it provides a simple and affordable tool for studying the morphology of coronal structures emitting preferentially at the peak ionization temperature of Fe XIV, namely, 1.8 x 10^6 K.
• DRUCKMÜLLEROVÁ, H.; MORGAN, H.; HABBAL, S.:
  ENHANCING CORONAL STRUCTURES WITH THE FOURIER NORMALIZING-RADIAL-GRADED FILTER, Chicago Journals
  journal article in Web of Science
  Images of the corona have a high dynamic range which is excellent for quantitative photometric analysis. To understand the processes governing the solar corona, it is essential to have information about the absolute brightness as well as the underlying structure. However, due to the steep radial gradient of brightness in the images, and to the fact that structures closer to the solar disk have higher contrast than structures further from the disk, human vision cannot view the intricate structure of the corona in such images. The recently developed normalizing-radial-graded filter (NRGF) is an effective way for revealing the coronal structure. In this work, we present a more adaptive filter inspired by the NRGF, which we call the Fourier normalizing-radial-graded filter (FNRGF). It approximates the local average and the local standard deviation by a finite Fourier series. This method enables the enhancement of finer details, especially in regions of lower contrast. We also show how the influence of additive noise is reduced by a modification to the FNRGF. To illustrate the power of the method, the FNRGF is applied to images of emission from coronal forbidden lines observed during the 2010 July 11 total solar eclipse. It is also successfully applied to space-based observations of the low corona in the extreme ultraviolet and to white light coronagraph observations, thus demonstrating the validity of the FNRGF as a new tool that will help the interpretation of the information embedded in most types of coronal images.
• HABBAL, S.; DRUCKMÜLLER, M.; MORGAN, H.; DING, A.; JOHNSON, J.; DRUCKMÜLLEROVÁ, H.; DAW, A.; ARNDT, M.; DIETZEL, M.; SAKEN, J.:
  THERMODYNAMICS OF THE SOLAR CORONA AND EVOLUTION OF THE SOLAR MAGNETIC FIELD AS INFERRED FROM THE TOTAL SOLAR ECLIPSE OBSERVATIONS OF 2010 JULY 11, Chicago Journals
  journal article in Web of Science
  We report on the first multi-wavelength coronal observations, taken simultaneously in white light, H alpha 656.3 nm, Fe ix 435.9 nm, Fe x 637.4 nm, Fe xi 789.2 nm, Fe xiii 1074.7 nm, Fe xiv 530.3 nm, and Ni xv 670.2 nm, during the total solar eclipse of 2010 July 11 from the atoll of Tatakoto in French Polynesia. The data enabled temperature differentiations as low as 0.2 x 106 K. The first-ever images of the corona in Fe ix and Ni xv showed that there was very little plasma below 5 x 105 K and above 2.5 x 106 K. The suite of multi-wavelength observations also showed that open field lines have an electron temperature near 1x106 K, while the hottest, 2x106 K, plasma resides in intricate loops forming the bulges of streamers, also known as cavities, as discovered in our previous eclipse observations. The eclipse images also revealed unusual coronal structures, in the form of ripples and streaks, produced by the passage of coronal mass ejections and eruptive prominences prior to totality, which could be identified with distinct temperatures for the first time. These trails were most prominent at 106 K. Simultaneous Fe x 17.4 nm observations from Proba2/SWAP provided the first opportunity to compare Fe x emission at 637.4 nm with its extreme-ultraviolet (EUV) counterpart. This comparison demonstrated the unique diagnostic capabilities of the coronal forbidden lines for exploring the evolution of the coronal magnetic field and the thermodynamics of the coronal plasma, in comparison with their EUV counterparts in the distance range of 1-3R. These diagnostics are currently missing from present space-borne and ground-based observatories.
• DRUCKMÜLLEROVÁ, H.:
  REGISTRATION OF REAL IMAGES BY MEANS OF PHASE CORRELATION,
  Mendel 2010 16th International Conference on Soft Computing, pp.578-583, ISBN 978-80-214-4120-0, (2010), Institute of Automation and Computer Science, Faculty of Mechanical Engineering, Brno University of Technology
  conference paper
  akce: MENDEL 2010 - 16th International Conference on Soft Computing, Brno University of Technology, 23.06.2010-25.06.2010
  In this paper, we describe a registration method based on phase correlation which can align scaled, rotated and shifted images. The algorithm is modified so that it can handle images of various modulation transfer functions, images containing additive and impulse noise, images taken by different optical systems with diffuse light and vignetting. A robust extension of the method to subpixel precision is presented.