This method uses a specified color (RGB value), compares this value to pixels in the image and selects areas of the image that have that color. From this selection, This method creates a new image and mask image.

[Visual Basic] Public Function AutoSelectImage(red As Byte, green As Byte, blue As Byte, mode As Integer, level As Integer) As Boolean
[C#] public bool AutoSelectImage(byte red, byte green, byte blue, int mode, int level);

Parameters

red
   Specifies the red value of the color that will be selected (From 0 to 255)

green
   Specifies the green value of the color that will be selected (From 0 to 255)

blue
   Specifies the blue value of the color that will be selected (From 0 to 255)

mode
   Comparison mode (0:RGB, 1:CrCb, 2:Y)

level
   Level of Allowance (From 0 to 255)

Return Value

Returns True if successful. Returns False if unsuccessful.

Explanation

The AutoSelectImage method uses a specified color (RGB value), and selects areas of the image that have that color. To execute the AutoSelectImage method, set the image handle of the image in the Image property or the Layer(LayerNumber).Image property. The AutoSelectImage method supports 1, 4, 8, 16, 24, and 32 bit images.

The Mode parameter sets the type of color comparison used to select portions of the image. When the Mode parameter is other than 0 (i.e. CrCb or Y) then all RGB values are converted to YCrCb values and compared. The Level parameter controls the range of RGB values that will be selected. If the Level value is 0, then only those pixels that have the save RGB value as that specified in the Red, Green, and Blue parameters will be selected. As the Level parameter increases, the range of RGB values that will be selected increases. For example, if Level = 10 and Red, Green, and Blue = 100 respectively, then all pixels with an RGB value between (90, 90, 90) and (110, 110, 110) will be selected.

Before executing the AutoSelectImage method, you must set the area on the image that will be affected. There are 3 ways to do this.

  1. To process the total image, set the SelectMode property to EffectAll
  2. To process the polygonal area on the image, set the SelectMode property to EffectPolygon. Set the appropriate values in the Point property
  3. To process an elliptical area on the image, set the SelectMode property to EffectEllipse. Set the appropriate values for the bounding rectangle in the Rect property

When the SelectMode property is set to EffectPolygon or EffectEllipse, the values must be set in the Inside property.

If the AutoSelectImage method is successful and the DestinationAsImageKitImage property is True, the resulting image will be set in the Image property or in the Layer(LayerNumber).Image property, according to the value set in the LayerNumber property.

If the AutoSelectImage method is successful and the DestinationAsImageKitImage property is False, the resulting image will be set in the DestinationImage property.

See Also

ImageKit.Effect Members | Newtone.ImageKit.Wpf.ImageKit

 

The ImageKit WPF is created by Newtone Corporation