publication . Preprint . Research . Article . 2018

Wavelet based speckle suppression for exoplanet imaging - Application of a de-noising technique in the time domain

Bonse, Markus J.; Quanz, Sascha P.; Adam Amara;
Open Access English
  • Published: 01 Apr 2018
Abstract
Context. High-contrast exoplanet imaging is a rapidly growing field as can be seen through the significant resources invested. In fact, the detection and characterization of exoplanets through direct imaging is featured at all major ground-based observatories. Aims. We aim to improve the signal-to-noise ratio (SNR) achievable for ground-based, adaptive-optics assisted exoplanet imaging by applying sophisticated post-processing algorithms. In particular, we investigate the benefits of including time domain information. Methods. We introduce a new speckle-suppression technique in data post-processing based on wavelet transformation. This technique explicitly consi...
Subjects
ACM Computing Classification System: ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
free text keywords: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Related Organizations
41 references, page 1 of 3

Absil, O., Milli, J., Mawet, D., et al. 2013, Astronomy & Astrophysics, 559, L12

Amara, A. & Quanz, S. P. 2012, Monthly Notices of the Royal Astronomical Society, 427, 948

Amara, A., Quanz, S. P., & Akeret, J. 2015, Astronomy and Computing, 10, 107

Beuzit, J.-L., Feldt, M., Dohlen, K., et al. 2008, in Proc. SPIE, Vol. 7014, Ground-based and Airborne Instrumentation for Astronomy II, 701418

Biller, B. A., Close, L. M., Masciadri, E., et al. 2006, in Proc. SPIE, Vol. 6272, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 62722D

Bowler, B. P. 2016, PASP, 128, 102001

Cantalloube, F., Mouillet, D., Mugnier, L., et al. 2015, Astronomy & Astrophysics, 582, A89

Currie, T., Burrows, A., Girard, J. H., et al. 2014, The Astrophysical Journal, 795, 133

Daubechies, I. 1992, Ten lectures on wavelets (SIAM)

Donoho, D. L. 1992, in Presented on the International Conference on Wavelets and Applications, Tolouse, France

Donoho, D. L. & Johnstone, I. M. 1994, biometrika, 425

Fitzgerald, M. P. & Graham, J. R. 2006, The Astrophysical Journal, 637, 541

Gomez Gonzalez, C. A., Absil, O., Absil, P.-A., et al. 2016, A&A, 589, A54

Gomez Gonzalez, C. A., Absil, O., & van Droogenbroeck, M. 2017, ArXiv eprints [arXiv:1712.02841]

Gonzalez, C. A. G., Wertz, O., Absil, O., et al. 2017, The Astronomical Journal, 154, 7

41 references, page 1 of 3
Abstract
Context. High-contrast exoplanet imaging is a rapidly growing field as can be seen through the significant resources invested. In fact, the detection and characterization of exoplanets through direct imaging is featured at all major ground-based observatories. Aims. We aim to improve the signal-to-noise ratio (SNR) achievable for ground-based, adaptive-optics assisted exoplanet imaging by applying sophisticated post-processing algorithms. In particular, we investigate the benefits of including time domain information. Methods. We introduce a new speckle-suppression technique in data post-processing based on wavelet transformation. This technique explicitly consi...
Subjects
ACM Computing Classification System: ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
free text keywords: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Related Organizations
41 references, page 1 of 3

Absil, O., Milli, J., Mawet, D., et al. 2013, Astronomy & Astrophysics, 559, L12

Amara, A. & Quanz, S. P. 2012, Monthly Notices of the Royal Astronomical Society, 427, 948

Amara, A., Quanz, S. P., & Akeret, J. 2015, Astronomy and Computing, 10, 107

Beuzit, J.-L., Feldt, M., Dohlen, K., et al. 2008, in Proc. SPIE, Vol. 7014, Ground-based and Airborne Instrumentation for Astronomy II, 701418

Biller, B. A., Close, L. M., Masciadri, E., et al. 2006, in Proc. SPIE, Vol. 6272, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 62722D

Bowler, B. P. 2016, PASP, 128, 102001

Cantalloube, F., Mouillet, D., Mugnier, L., et al. 2015, Astronomy & Astrophysics, 582, A89

Currie, T., Burrows, A., Girard, J. H., et al. 2014, The Astrophysical Journal, 795, 133

Daubechies, I. 1992, Ten lectures on wavelets (SIAM)

Donoho, D. L. 1992, in Presented on the International Conference on Wavelets and Applications, Tolouse, France

Donoho, D. L. & Johnstone, I. M. 1994, biometrika, 425

Fitzgerald, M. P. & Graham, J. R. 2006, The Astrophysical Journal, 637, 541

Gomez Gonzalez, C. A., Absil, O., Absil, P.-A., et al. 2016, A&A, 589, A54

Gomez Gonzalez, C. A., Absil, O., & van Droogenbroeck, M. 2017, ArXiv eprints [arXiv:1712.02841]

Gonzalez, C. A. G., Wertz, O., Absil, O., et al. 2017, The Astronomical Journal, 154, 7

41 references, page 1 of 3
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publication . Preprint . Research . Article . 2018

Wavelet based speckle suppression for exoplanet imaging - Application of a de-noising technique in the time domain

Bonse, Markus J.; Quanz, Sascha P.; Adam Amara;