[GRASS-SVN] r66880 - grass-addons/grass7/raster/r.houghtransform

[svn_grass at osgeo.org]

Author: wenzeslaus
Date: 2015-11-20 13:02:41 -0800 (Fri, 20 Nov 2015)
New Revision: 66880

Modified:
   grass-addons/grass7/raster/r.houghtransform/
   grass-addons/grass7/raster/r.houghtransform/r.houghtransform.html
Log:
r.houghtransform: small doc changes and propset on dir


Property changes on: grass-addons/grass7/raster/r.houghtransform
___________________________________________________________________
Added: svn:ignore
   + OBJ.*
*.tmp.html


Modified: grass-addons/grass7/raster/r.houghtransform/r.houghtransform.html
===================================================================
--- grass-addons/grass7/raster/r.houghtransform/r.houghtransform.html	2015-11-20 15:19:45 UTC (rev 66879)
+++ grass-addons/grass7/raster/r.houghtransform/r.houghtransform.html	2015-11-20 21:02:41 UTC (rev 66880)
@@ -5,8 +5,6 @@
 An edge is considered as potential line feature previously detected by
 some other algorithm represented by value 1 in the raster map.
 
-<h3>Algorithm</h3>
-
 <p>
 In general, the Hough transform is a method for finding geometry structures in
 images. This module uses the Hough transform for straight line detection.
@@ -19,6 +17,9 @@
 be thin e.g., those produced <em><a href="r.thin.html">r.thin</a></em> module
 or by <em><a href="i.edge.html">i.edge</a></em> module (Canny edge detector).
 
+
+<h3>Algorithm</h3>
+
 <p>
 Lines can be mathematically represented in many ways. For this module,
 the following representation was chosen. Line is represented in polar
@@ -45,8 +46,8 @@
 in the Hough image and one point in the Hough image defines a line in
 the original image by  <i>r</i> and <i>Θ</i> parameters. One line in
 the original image is represented by an intersection of curves.
-More points (pixels) in one line lead to higher value of the curves’ intersection
-point.
+More points (pixels) in one line lead to a higher value in the point of
+curves' intersection.
 
 <p>
 For further evaluation, it is necessary to extract local maximum values from
@@ -135,7 +136,7 @@
 
 <p>
 The edge directions (e.g. the optional output of
-<em><a href="i.edge.html">i.edge</a></em>) can serve as an addritional input to
+<em><a href="i.edge.html">i.edge</a></em>) can serve as an additional input to
 <em>r.houghtransform</em> module. The availability of edge directions
 reduces significantly the time needed for the computation without
 any negative effect on the result.