ImageEn, unit ievision

TIEVisionObjectTracker.locateNewPosition

TIEVisionObjectTracker.locateNewPosition


Declaration

function locateNewPosition(image: TIEVisionImage; out backProjectedImage: TIEVisionImage): TIEVisionRotatedRect; safecall;


Description

Locates the new position of the object. Before call locateNewPosition you must call setInitialPosition.



Parameter Description
image Source image.
backProjectedImage Image resulting of backprojection of object histogram.


Demo

Demo  Demos\IEVision\TrackObjects\TrackObjects.dpr


Example

// Create our tracking object
m_objectTracker := IEVisionLib.createObjectTracker();

// Specify the object to track
ImageEnView1.IEBitmap.Origin := ieboTOPLEFT;
image := IEVisionLib.createImage(ImageEnView1.IEBitmap.Width, ImageEnView1.IEBitmap.Height, ievUINT8, 3, ImageEnView1.IEBitmap.Rowlen, ImageEnView1.IEBitmap.ScanLine[0]);
with ImageEnView1 do
  m_objectTracker.setInitialPosition(image, IEVisionRect(SelX1, SelY1, SelX2 - SelX1, SelY2 - SelY1));

// As video frame changes, locate new position of the object
rotRect := m_objectTracker.locateNewPosition(ImageEnView1.IEBitmap.GetIEVisionImage().flip(ievY_AXIS), backProj);
... Show rotRect, e.g. with a rectangular shape layer


See Also

- setInitialPosition