<html><body bgcolor="#FFFFFF"><div>Besides Geo-Referencing a Raster image, there is also a function called "Feature Extraction". I Believe there is a plugin for extracting Vector Features from a DEM and possibly other functions to extract features from other types of Rasters. Perhaps if Geo-referencing is not your primary goal you can research feature extraction to give you some background. <br><br>Sent from my iPhone</div><div><br>On 2011-11-02, at 12:57 PM, Mumtaz Lakho <<a href="mailto:lakho.mumtaz@yahoo.com">lakho.mumtaz@yahoo.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:10pt"><div><div>Dear QGIS Repr.</div><div>Would u please guide me the process of Digitizationof raster layer under QGIS 1.7.1- wroclaw</div><div>thanks </div><div>(Mumtaz)</div><div>a QGIS User</div></div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Qgis-user mailing list</span><br><span><a href="mailto:Qgis-user@lists.osgeo.org">Qgis-user@lists.osgeo.org</a></span><br><span><a href="http://lists.osgeo.org/mailman/listinfo/qgis-user">http://lists.osgeo.org/mailman/listinfo/qgis-user</a></span><br></div></blockquote></body></html>