All functions Mac OS X Windows Crossplatform Components New in version: 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.0
Component: GraphicsMagick
Mac OS X: Works
Windows: Works
MBS( "GMImage.UnsharpmaskChannel"; ImageRef; ChannelType; radius; sigma; amount; threshold )
Parameter | Description | Example value |
---|---|---|
ImageRef | The image reference (a number returned from the GMImage.New functions) | 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 |
Returns "OK" on success.
Replace image with a sharpened version of the original image using the unsharp mask algorithm.
Feedback: Report problem or ask question.