TIEVisionImage.adaptiveThreshold
Declaration
procedure adaptiveThreshold(maxValue: double; adaptiveMethod: TIEVisionAdaptiveMethod = ievADAPTIVE_THRESH_MEAN_C; thresholdType: TIEVisionThresholdType = ievTHRESH_BINARY; blockSize: int32_t = 3; C: double = 5); safecall;Description
Apply an adaptive threshold.Note: Pixel format of input image must be ie8g.
| Parameter | Description |
|---|---|
| maxValue | Non-zero value assigned to the pixels for which the condition is satisfied |
| adaptiveMethod | Adaptive thresholding algorithm to use |
| thresholdType | Thresholding type. This can be ievTHRESH_BINARY or ievTHRESH_BINARY_INV |
| blockSize | Size of a pixel neighborhood that is used to calculate a threshold value for the pixel: 3, 5, 7, and so on |
| C | Constant subtracted from the mean or weighted mean |
Example
// Load test imageImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );
ImageEnView1.IEBitmap.PixelFormat := ie8g;
ImageEnView1.IEBitmap.GetIEVisionImage().adaptiveThreshold( 255 );
ImageEnView1.Update();
