TImageEnProc.UnsharpMask

Declaration

procedure UnsharpMask(Radius: Double = 4.0; Amount: Double = 1.0; Threshold: Double = 0.05);

Description

Apply a gaussian blur to the image.
Unlike Blur. UnsharpMask() only "blurs" the areas (pixels) which are sharper (decided by the threshold parameter).


Also see: Comparison of smoothing, blurring and noise reduction methods

Note:
◼ A UI for this is available to your users in the Image Processing dialog
◼ Also available as a RetouchTool by setting MouseInteractGeneral to [miRetouchTool] and RetouchMode to iermUnsharpen
◼ If the image PixelFormat is not ie24RGB, it will be converted

Demo

Example

// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );

  

// Apply a gaussian blur to the image
ImageEnView1.Proc.UnsharpMask();

  

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