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GMImage.Unsharpmask
Replace image with a sharpened version of the original image using the unsharp mask algorithm.
| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
| GraphicsMagick | 2.0 | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
MBS( "GMImage.Unsharpmask"; ImageRef; radius; sigma; amount; threshold ) More
Parameters
| Parameter | Description | Example |
|---|---|---|
| ImageRef | The image reference number. | $Image |
| radius | the radius of the Gaussian, in pixels, not counting the center pixel. | 0 |
| 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. 1 = 100% |
1 |
| threshold | the threshold in pixels needed to apply the diffence amount. | 0.05 |
Result
Returns "OK" on success.
Description
Replace image with a sharpened version of the original image using the unsharp mask algorithm.Examples
Try it:
# Load from container
Set Variable [ $ImageRef ; Value: MBS("GMImage.NewFromContainer"; Test::BigImage) ]
# apply unsharp mask
Set Variable [ $Result ; Value: MBS("GMImage.Unsharpmask"; $ImageRef; 2; 1; 1; ,05) ]
# Store output and release the image
Set Field [ Test::Result ; MBS( "GMImage.WriteToPNGContainer"; $ImageRef ) ]
Set Variable [ $Error ; Value: MBS("GMImage.Free";$ImageRef) ]
See also
This function checks for a license.
Created 18th August 2014, last changed 27th September 2022
