Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel

Details Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel

2011-03-21

arxiv.org/abs/1103.3698v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Astronomy & Astrophysics

Scientific paper

We investigate super-resolution methods for image reconstruction from data provided by a family of scanning instruments like the Herschel observatory. To do this, we constructed a model of the instrument that faithfully reflects the physical reality, accurately taking the acquisition process into account to explain the data in a reliable manner. The inversion, ie the image reconstruction process, is based on a linear approach resulting from a quadratic regularized criterion and numerical optimization tools. The application concerns the reconstruction of maps for the SPIRE instrument of the Herschel observatory. The numerical evaluation uses simulated and real data to compare the standard tool (coaddition) and the proposed method. The inversion approach is capable to restore spatial frequencies over a bandwidth four times that possible with coaddition and thus to correctly show details invisible on standard maps. The approach is also applied to real data with significant improvement in spatial resolution.

Affiliated with

Also associated with

No associations

Rating

Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-322127