ImageEn, unit ievision

TIEVisionImage.matchTemplateAsMap

TIEVisionImage.matchTemplateAsMap


Declaration

function matchTemplateAsMap(templ: TIEVisionImage; matchMethod: TIEVisionTemplateMatchMethod): TIEVisionImage; safecall;


Description

Search the image for the location of the template image and returns the map of comparison results (a ie32f bitmap).

Parameter Description
templ Template image to find. It must be not larger than the source image
matchMethod Comparison method



Using Template matching to find the original location of a cropped portion of image:



Note: If a map is not required use matchTemplate or matchTemplateMulti


Demos

Demo  Demos\IEVision\PatternMatchingMap\PatternMatchingMap.dpr
Demo  Demos\ImageEditing\EveryMethod\EveryMethod.dpr


Example

procedure TMainForm.Button2Click(Sender: TObject);
var
  image, templ, map: TIEVisionImage;
  rect: TIEVisionRect;
begin
  ImageEnView1.LayersClear( False );

  // get image to search
  image := ImageEnView1.IEBitmap.GetIEVisionImage();

  // get the template image to find
  templ := IEVSource.IEBitmap.GetIEVisionImage();

  // perform template searching
  rect := image.matchTemplate(templ, TIEVisionTemplateMatchMethod(ComboBox1.ItemIndex));

  // draw a red box around the found rectangle
  ImageEnView1.LayersAdd( iesRectangle, IEVisionRectToTRect( rect ), clRed, 2 );

  // fill the resulting map
  map := image.matchTemplateAsMap(templ, TIEVisionTemplateMatchMethod(ComboBox1.ItemIndex));
  ImageEnView2.IEBitmap.AssignIEVisionImage(map);
end;