shape_histo_allT_shape_histo_allShapeHistoAllShapeHistoAll (Operator)

Name

shape_histo_allT_shape_histo_allShapeHistoAllShapeHistoAll — Ausprägung von Merkmalen entlang aller Schwellenwerte.

Signatur

shape_histo_all(Region, Image : : Feature : AbsoluteHisto, RelativeHisto)

shape_histo_allshape_histo_allShapeHistoAllShapeHistoAllShapeHistoAll führt 255 Schwellenwertoperationen innerhalb von RegionRegionRegionRegionregion mit den Grauwerten von ImageImageImageImageimage durch. Der Eintrag i im Histogramm entspricht dann der Anzahl der Zusammenhangskomponenten/Löcher dieses mit der Schwelle i segmentierten Bildes (FeatureFeatureFeatureFeaturefeature = 'connected_components'"connected_components""connected_components""connected_components""connected_components", 'holes'"holes""holes""holes""holes") bzw. dem Mittelwert der Merkmalswerte der so segmentierten Regionen (FeatureFeatureFeatureFeaturefeature = 'convexity'"convexity""convexity""convexity""convexity", 'compactness'"compactness""compactness""compactness""compactness", 'ansisometry'"ansisometry""ansisometry""ansisometry""ansisometry").

Mit set_paint(::WindowHandle,'component_histogram':)set_paint(WindowHandle,"component_histogram")SetPaint(WindowHandle,"component_histogram")SetPaint(WindowHandle,"component_histogram")SetPaint(WindowHandle,"component_histogram") und disp_imagedisp_imageDispImageDispImageDispImage kann das Histogramm auch direkt als Graphik ausgegeben werden.

Achtung

shape_histo_allshape_histo_allShapeHistoAllShapeHistoAllShapeHistoAll erwartet als Eingabe eine Region und genau ein Grauwertbild. Wegen der Mächtigkeit dieser Prozedur ist die Laufzeit von shape_histo_allshape_histo_allShapeHistoAllShapeHistoAllShapeHistoAll relativ groß!

Der Operator shape_histo_allshape_histo_allShapeHistoAllShapeHistoAllShapeHistoAll berücksichtigt nur die mittels RegionRegionRegionRegionregion übergebene Region und ignoriert jede Domäne, die zuvor für das Eingabebild ImageImageImageImageimage festgelegt wurde.

Ausführungsinformationen

Multithreading-Typ: reentrant (läuft parallel zu nicht-exklusiven Operatoren).
Multithreading-Bereich: global (kann von jedem Thread aufgerufen werden).
Wird ohne Parallelisierung verarbeitet.

Parameter

RegionRegionRegionRegionregion (input_object) region → object

Region, in der die Merkmale betrachtet werden.

ImageImageImageImageimage (input_object) singlechannelimage → object (byte)

Grauwertdaten.

FeatureFeatureFeatureFeaturefeature (input_control) string → (string)

Merkmal, das untersucht werden soll.

Defaultwert: 'connected_components' "connected_components" "connected_components" "connected_components" "connected_components"

Werteliste: 'anisometry'"anisometry""anisometry""anisometry""anisometry", 'compactness'"compactness""compactness""compactness""compactness", 'connected_components'"connected_components""connected_components""connected_components""connected_components", 'convexity'"convexity""convexity""convexity""convexity", 'holes'"holes""holes""holes""holes"

AbsoluteHistoAbsoluteHistoAbsoluteHistoAbsoluteHistoabsoluteHisto (output_control) histogram-array → (real / integer)

Absolute Verteilung des Merkmals.

RelativeHistoRelativeHistoRelativeHistoRelativeHistorelativeHisto (output_control) histogram-array → (real)

Relative Verteilung des Merkmals.

Beispiel (HDevelop)

* Simulation of shape_histo_all with feature 'connected_components':
* my_shape_histo_all(Region,Image,AbsHisto,RelHisto):
reduce_domain(Region,Image,RegionGray)
for i := 0 to 255 by 1
    threshold(RegionGray,Seg,i,255)
    connect_and_holes (Seg, NumConnected, _)
    AbsHisto[i] := NumConnected
endfor
Sum := 0
for i := 0 to 255 by 1
    Sum := Sum+AbsHisto[i]
endfor
for i := 0 to 255 by 1
    RelHisto[i] := AbsHisto[i]/Sum
endfor

Beispiel (C)

/* Simulation of shape_histo_all with feature 'connected_components': */
my_shape_histo_all(Hobject Region,Hobject Image,
                 Hlong AbsHisto[], double RelHisto[])
{
  Hlong     i,sum;
  Hobject  RegionGray,Seg;

  reduce_domain(Region,Image,&RegionGray);
  for (i=0; i<256; i++) {
    threshold(RegionGray,&Seg,(double)i,255.0);
    connect_and_holes(Seg,&AbsHisto[i],NULL);
    clear_obj(Seg);
  }
  clear_obj(RegionGray); sum = 0;
  for (i=0; i<256; i++)
    sum += AbsHisto[i];
  for (i=0; i<256; i++)
    RelHist[i] = (double)AbsHisto[i]/Sum;
}

Beispiel (HDevelop)

* Simulation of shape_histo_all with feature 'connected_components':
* my_shape_histo_all(Region,Image,AbsHisto,RelHisto):
reduce_domain(Region,Image,RegionGray)
for i := 0 to 255 by 1
    threshold(RegionGray,Seg,i,255)
    connect_and_holes (Seg, NumConnected, _)
    AbsHisto[i] := NumConnected
endfor
Sum := 0
for i := 0 to 255 by 1
    Sum := Sum+AbsHisto[i]
endfor
for i := 0 to 255 by 1
    RelHisto[i] := AbsHisto[i]/Sum
endfor

Beispiel (HDevelop)

* Simulation of shape_histo_all with feature 'connected_components':
* my_shape_histo_all(Region,Image,AbsHisto,RelHisto):
reduce_domain(Region,Image,RegionGray)
for i := 0 to 255 by 1
    threshold(RegionGray,Seg,i,255)
    connect_and_holes (Seg, NumConnected, _)
    AbsHisto[i] := NumConnected
endfor
Sum := 0
for i := 0 to 255 by 1
    Sum := Sum+AbsHisto[i]
endfor
for i := 0 to 255 by 1
    RelHisto[i] := AbsHisto[i]/Sum
endfor

Beispiel (HDevelop)

* Simulation of shape_histo_all with feature 'connected_components':
* my_shape_histo_all(Region,Image,AbsHisto,RelHisto):
reduce_domain(Region,Image,RegionGray)
for i := 0 to 255 by 1
    threshold(RegionGray,Seg,i,255)
    connect_and_holes (Seg, NumConnected, _)
    AbsHisto[i] := NumConnected
endfor
Sum := 0
for i := 0 to 255 by 1
    Sum := Sum+AbsHisto[i]
endfor
for i := 0 to 255 by 1
    RelHisto[i] := AbsHisto[i]/Sum
endfor