Declaration
function threshold(thresh: double; maxval: double; threshType: TIEVisionThresholdType): double; safecall;
Description
Applies a fixed-level threshold to each pixel element.
Returns the computed threshold value when ievTHRESH_OTSU or ievTHRESH_TRIANGLE is specified.
Note: Pixel format of input image must be ie8g.
| Parameter | Description |
| thresh | Threshold value |
| maxval | Maximum value to use with the THRESH_BINARY and THRESH_BINARY_INV thresholding types |
| threshType | Thresholding type. Optionally, you can OR the type with ievTHRESH_OTSU to use the optimal threshold value determined by Otsu’s algorithm |
Example
begin
ImageEnView.IO.LoadFromFile('input.jpg');
ImageEnView.IEBitmap.PixelFormat := ie8g;
ImageEnView.IEBitmap.GetIEVisionImage().threshold(0, 255, ievTHRESH_BINARY or ievTHRESH_OTSU);
ImageEnView.Update();
end;