weightwatcher

Combine maps and polygon data for astronomical image processing

Description

WeightWatcher is a program that combines weight-maps, flag-maps and polygon data in order to produce control maps which can directly be used in astronomical image-processing packages like Drizzle, Swarp or SExtractor.

Weight-thresholding and/or specific flag selections are applied by WeightWatcher through a configuration file: this alleviates other programs from such interpretation work. WeightWatcher will mostly be useful as part of an imaging survey pipeline. Its main features are:

* Processing speed: limited by the I/O performances of the machine

(typically 50 Mpixel/s on a workstation),

* Ability to work with very large images (up to, say, 10^8 × 10^9 pixels on

a 64 bit system),

* FITS format (including Multi-Extension) is used for input and

output. Output flag-map format selection is automatic (8, 16 or 32bits),

* Up to 30 weight-maps, 30 flag-maps, and thousands of polygons can be

handled simultaneously.

* Automatic rasterizing of DS9 .reg files,

* Statistics of flagged and weighted areas,

* Metadata output in XML-VOTable format.

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