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Changed a default value for Contour detection feature

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rnc 2013-12-09 16:29:54 +00:00
parent ac566d76d9
commit 1254687132
1 changed files with 10 additions and 1 deletions
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11
src/EntityGUI/EntityGUI_FeatureDetectorDlg.cxx
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@ -282,7 +282,16 @@ EntityGUI_FeatureDetectorDlg::EntityGUI_FeatureDetectorDlg( GeometryGUI* theGeom
myWidgets.insert( HIST_TYPE, histType );
QDoubleSpinBox* thresholdValue = new QDoubleSpinBox();
thresholdValue->setRange( 0, 254 );
thresholdValue->setValue( 128 );
// 1 is a good default value for the threshold. It means that we are very permissive
// about what will be considered INSIDE the zone we want to find the frontier of
// This makes the algorithm more robust against a bit inhomogeneous parts in the zone
// that we want to delimitate.
// The drawback is if we want to delimitate a zone wich color is very similar to the zone
// we consider as the OUTSIDE, the result will be bad.
// The current use cases are more of the first form :
// - Strongly contrasted INSIDE and OUTSIDE zones
// - Small inhomogenities in each zone
thresholdValue->setValue( 1 );
myWidgets.insert( THRESHOLD_VALUE, thresholdValue );
QDoubleSpinBox* maxThreshold = new QDoubleSpinBox();
maxThreshold->setRange( 1, 255 );