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Published byTeresa Hawthorne Modified over 9 years ago
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Solar Image Processing: A Multiscale View C. Alex Young NASA/GSFC C. Alex Young NASA/GSFC UCLA - IPAM (January 28, 2004)
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems.
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems.
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The high energy sun. 20 Jan 2000 Solar Flare BATSE and COMPTEL (yellow) 1-30 MeV image and 100 keV /1-30 MeV lightcurves
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The EUV/radio sun. Flare in EUV 171 Å pass band Flare in radio
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. A suggestion by J. Starck Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. A suggestion by J. Starck Some other problems.
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From the photosphere to the corona.
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The visible sun.
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Sunspot evolution.
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Swedish Vacuum Telescope.
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Solar flare quake.
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Solar oscillations.
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Oscillations in the MDI high-res. f.o.v.
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Helioseismology.
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Sub-surface structure.
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Backside imaging.
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Longitudinal Magnetic field
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304 Å Sun
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195 Å Sun
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195 Å difference image of an EIT wave
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Solar flare in UV cont. and 2 EUV passbands seen by TRACE
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Filament eruptions in TRACE 171 Å passband
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Magnetic loops in TRACE 171 Å passband
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A flare in TRACE 1600 Å cont. and 171 Å pass band
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Solar tornados
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Largest flare ever recorded in 171 Å pass band.
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The outer corona seen in white-light by LASCO C2 2-15 solar radii The outer corona seen in white-light by LASCO C2 2-15 solar radii
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LASCO C3 7-30 solar radii
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Active sun seen in LASCO C3
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems.
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TRACE 195 A
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Images at the time of the first brightening in the TRACE movie. (Gallagher 2003) Top panels: TRACE 195 Å difference images created by subtracting each image from a frame taken at 00:42:30 UT. Bottom panels: LASCO C2 and C3 images showing the similar morphology of the eruption as it propagates away from the solar surface. (Gallagher 2003)
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A Standard Analysis
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems.
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scale = 2 scale = 4 scale = 8 scale = 16
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The top image shows the 30 multiscale edges at scale 8 (green) and 16 (red) over the image at 00:46:34 UT. The bottom images zoom in on the fronts. The top image shows the 30 multiscale edges at scale 8 (green) and 16 (red) over the image at 00:46:34 UT. The bottom images zoom in on the fronts. A set of edges from 00:46:34 UT to 01:01:58 UT at 2 scales
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Following a front in TRACE.
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Outline My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems. My motivations - where I got interested in multiscale methods. A gallery of data. A standard analysis - that surprised me. My approach - an attempt at something better. Some other problems.
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high-energy solar flare imaging
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Sunspot Classification Multifractal measure ? Shapelets ?
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EIT Calibration calibration lamp for flat field and filter grid. Wavelets, Ridgelets, and Curvelets representation?
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EIT 284 Å images Cosmic Rays, Bright Points, Coronal Holes.
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Large increase in data volume. 1 passband x 136 images x (1 Mb) = 136 Mb 4 passbands x 1440 images x (16.6 Mbs) = 95.6 Gbs 1 passband x 136 images x (1 Mb) = 136 Mb 4 passbands x 1440 images x (16.6 Mbs) = 95.6 Gbs Data from just EUV imaging Data from the entire spacecraft increases from ~1 Gbyte/day to ~1 Tbyte/day
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The sun in STEREO Tomography in space, reconstructing a 3-D view with two spacecraft
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