# public documents.sextractor_doc

## [/] [overview.tex] - Diff between revs 19 and 25

Rev 19 Rev 25
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\gam{I omitted the dashes from Flag map'', Weight map'' (using InkScape).}
\gam{I omitted the dashes from Flag map'', Weight map'' (using InkScape).}
              }
              }
      \label{fig:layout}
      \label{fig:layout}
   \end{figure}
   \end{figure}
 
 
The complete analysis of an image is done in two passes through the data. During the first pass, a
The complete analysis of an \index{image} image is done in two passes through the data. During the first pass, a
model of the sky background is built, and several global statistics are estimated. During the
\index{mode} model of the sky background is built, and several global statistics are estimated. During the
second pass, the image is background-subtracted, filtered and thresholded on-the-fly''.
second pass, the \index{image} image is background-subtracted, filtered and \index{threshold} thresholded on-the-fly''.
Detections are then deblended, pruned (CLEANed''), photometered, classified and finally written
Detections are then deblended, pruned (CLEANed''), photometered, classified and finally written
to the output catalogue. The following sections describe each of these
to the output catalogue. The following sections describe each of these
operations in more detail.\footnote{In the text, uppercase keywords in typewriter font refer to parameters from the
operations in more detail.\footnote{In the text, uppercase keywords in typewriter font refer to parameters from the
configuration file or from the parameter file}
\index{configuration file} configuration file or from the \index{parameter file} parameter file}
 
 
 
 
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