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GMImage.UnsharpmaskChannel

Replace image with a sharpened version of the original image using the unsharp mask algorithm.

Parameters

Parameter	Description	Example
ImageRef	The image reference number.	1
ChannelType	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.)
radius	the radius of the Gaussian, in pixels, not counting the center pixel.	3
sigma	the standard deviation of the Gaussian, in pixels.	1
amount	the percentage of the difference between the original and the blur image that is added back into the original. 50
threshold	the threshold in pixels needed to apply the diffence amount.	3

Result

Returns "OK" on success.

Description

Created 18th August 2014, last changed 18th August 2014

GMImage.Unsharpmask   -   GMImage.Wave

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