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GMImage.Channel

Extract channel from image.

Parameters

Parameter	Description	Example
ImageRef	The image reference number.	1
ChannelType	One of the following values: RedChannel = 1 (RGB Red channel), CyanChannel = 2 (CMYK Cyan channel), GreenChannel = 3 (RGB Green channel), MagentaChannel = 4 (CMYK Magenta channel), BlueChannel = 5 (RGB Blue channel), YellowChannel = 6 (CMYK Yellow channel), OpacityChannel = 7 (Opacity channel), BlackChannel = 8 (CMYK Black (K) channel), MatteChannel = 9 (Same as Opacity channel (deprecated)), AllChannels = 10 (Color channels), GrayChannel = 11 (Color channels represent an intensity.)	1

Result

Returns "OK" on success.

Description

Examples

Extracts the red channel:

Let ( [
$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);
$Result = MBS("GMImage.Channel";$Image; 1);
$Result = MBS("GMImage.WriteToPNGContainer"; $Image);
$Error = MBS("GMImage.Release";$Image)
];
$Result)

See also

• GMImage.BlurChannel
• GMImage.Charcoal
• GMImage.CopyChannel
• GMImage.Enhance
• GMImage.New
• GMImage.NewFromContainer
• GMImage.Release
• GMImage.Sharpen
• GMImage.WriteToPNGContainer

Example Databases

• GraphicsMagick/GraphicsMagick Sample

Created 18th August 2014, last changed 21st December 2018

GMImage.BoundingBox   -   GMImage.Charcoal

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