Threshold (ImageKit Control/ Scan Property)

This property sets the scanning threshold. This property is only enabled when using a custom-built user interface.

[C++Builder] imagekitcontrolname->Scan->Threshold [ = short ]

[Delphi] imagekitcontrolname.Scan.Threshold [ = Short ]

Property Value

From 0 to 255 (Default value is 128)

Explanation

The Threshold property sets the scanning threshold. This property is enabled when the UiMode property is vikScanNONUI.

The Threshold property requires that the PixelType property be vikScanPixelBW and the BitDepthReduction property be vikBitDepthReductionThreshold. For scan devices that use brightness instead of threshold, the Brightness property value will be used.

Note: This property is disabled for digital cameras and scanners that do not support this function. The possible setting values supported by a scan device can be retrieved using the GetCapRange or the GetCapEnumToFloat method.

Setting this value

This value can be set at run-time.

Retrieving this value

This value cannot be retrieved.