[GRASS-SVN] r73720 - grass-addons/grass7/imagery/i.points.auto

[svn_grass at osgeo.org]

Author: mlennert
Date: 2018-11-28 04:43:01 -0800 (Wed, 28 Nov 2018)
New Revision: 73720

Modified:
   grass-addons/grass7/imagery/i.points.auto/i.points.auto.html
Log:
i.points.auto: clarify the need to provide existing GCPs to the module

Modified: grass-addons/grass7/imagery/i.points.auto/i.points.auto.html
===================================================================
--- grass-addons/grass7/imagery/i.points.auto/i.points.auto.html	2018-11-27 17:52:14 UTC (rev 73719)
+++ grass-addons/grass7/imagery/i.points.auto/i.points.auto.html	2018-11-28 12:43:01 UTC (rev 73720)
@@ -2,8 +2,12 @@
 
 <em>i.points.auto</em> tries to automatically generate a given number
 of new ground control points (GCPs) by matching the input map to a target
-map through FFT correlation. The goal of this computation is thus to
-enable automatic geocoding of imagery to a master image.
+map through FFT correlation, based on a few existing ground control points,
+previously defined by the user, for example through the 
+<a href="wxGUI.gcp.html">Ground Control Points Manager</a>. 
+The goal of the module is thus to automaticallty increase the number of control
+points to enable higher quality geocoding of imagery to a master image 
+(co-registration).
 
 
 <h2>NOTES</h2>