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Solar Image Processing: A Multiscale View

Solar Image Processing: A Multiscale View. C. Alex Young NASA/GSFC. UCLA - IPAM (January 28, 2004). 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.

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Solar Image Processing: A Multiscale View

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  1. Solar Image Processing: A Multiscale View • C. Alex Young • NASA/GSFC UCLA - IPAM (January 28, 2004)

  2. 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.

  3. 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.

  4. The high energy sun. 20 Jan 2000 Solar Flare BATSE and COMPTEL (yellow) 1-30 MeV image and 100 keV /1-30 MeV lightcurves

  5. The EUV/radio sun. Flare in EUV 171 Å pass band Flare in radio

  6. 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.

  7. From the photosphere to the corona.

  8. The visible sun.

  9. Sunspot evolution.

  10. Swedish Vacuum Telescope.

  11. Solar flare quake.

  12. Solar oscillations.

  13. Oscillations in the MDI high-res. f.o.v.

  14. Helioseismology.

  15. Sub-surface structure.

  16. Backside imaging.

  17. Longitudinal Magnetic field

  18. 304 Å Sun

  19. 195 Å Sun

  20. 195 Å difference image of an EIT wave

  21. Solar flare in UV cont. and 2 EUV passbands seen by TRACE

  22. Filament eruptions in TRACE 171 Å passband

  23. Magnetic loops in TRACE 171 Å passband

  24. A flare in TRACE 1600 Å cont. and 171 Å pass band

  25. Solar tornados

  26. Largest flare ever recorded in 171 Å pass band.

  27. The outer corona seen in white-light by LASCO C2 2-15 solar radii

  28. LASCO C3 7-30 solar radii

  29. Active sun seen in LASCO C3

  30. 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.

  31. TRACE 195 A

  32. 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)

  33. A Standard Analysis

  34. 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.

  35. scale = 2 scale = 4 scale = 8 scale = 16

  36. A set of edges from 00:46:34 UT to 01:01:58 UT at 2 scales • 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.

  37. Following a front in TRACE.

  38. 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.

  39. high-energy solar flare imaging

  40. Sunspot Classification Multifractal measure ? Shapelets ?

  41. EIT Calibration calibration lamp for flat field and filter grid. Wavelets, Ridgelets, and Curvelets representation?

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