From: rnc Date: Tue, 17 Apr 2012 14:33:13 +0000 (+0000) Subject: some updates X-Git-Tag: TRIPOLI_323~33 X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=9ff14f06aa4239df656a73757e838b7107dd5c5b;p=modules%2Fgeom.git some updates --- diff --git a/doc/salome/gui/GEOM/input/shape_recognition.doc b/doc/salome/gui/GEOM/input/shape_recognition.doc index 903ced782..2aa15f3d9 100644 --- a/doc/salome/gui/GEOM/input/shape_recognition.doc +++ b/doc/salome/gui/GEOM/input/shape_recognition.doc @@ -19,6 +19,8 @@ Detection of the cost line on a nautical chart \image html contour_detection_example2.png +\n + To use the Shape recogition tool:
    @@ -43,22 +45,29 @@ To create Contours :
  1. Find a zone in the picture which color is representative of the zone you want to find the frontier of. Draw a rectangle on it to take a Snapshot.
    2. -
  2. Apply
    3. - - The \b Result will be a \b Compound of \b Edges or \b Wires from which you can explode the desired edges or wires. - - \image html feature_detection_dlg.png + \b Example: + + In the example shown above the following snapshot was taken in the middle of the chart - Output type : + \image html feature_detection_dlg3.png + + All the violet and white areas are thus considered as part of the zone we want to find the frontier of. + + +
  3. Output type
      -
    • \b Spline : each contour will be a single \b edge based on a B-Spline curve
      • +
    • \b Spline : The \b result will be a \b Compound of \b Edges. Each contour will be a single \b edge based on a B-Spline curve (it will be smooth).
      • -
    • \b Polyline : each contour will be a wire made of lines (i.e. a \b Polygon)
      • +
    • \b Polyline : The \b result will be a \b Compound of \b Wires. Each contour will be a wire made of lines (i.e. a \b Polygon)
    + In both cases each contour can then be retrieved by an explode operation with the appropriate subshape type. + +
    4. + \note It's better to use the \b Spline output type unless you want to find the frontier of a polygon (rectangle ...)