This GIMP (GNU) tutorial demonstrates how to apply falling snow to a photograph. To work along, you are welcome to download the Start Image I am working with Here. Unzip the file and open the image onto GIMP’s workspace.
You can quickly Undo a step at any time by pressing Ctrl then Z. Alternatively, click a previous Undo History snapshot - Windows then Dockable Dialogues then click Undo History. In addition, to Zoom in (or Zoom out) of your image; from the top menu choose View then select a Zoom Tool from the subsequent drop-down list.
Understand Blend Modes
Launch GIMP & Organise Its Workspace & Palettes
Open your choice of Start Image onto GIMP’s workspace - File then Open - Ctrl then O.
Ensure the Layers and the Undo History Palettes are visible, and then drag them into position over your workspace - (Windows then Dockable Dialogues - then click Layers and Undo History).
Now, from the Layers Palette, add a New Transparent Layer clicking the following Create a new layer tab.
And from the subsequent New Layer dialogue box, name the New Layer Snow, and then click OK.
Now, change the Foreground Colour to a Mid Grey colour.
And from the left-side Toolbox, activate the Bucket Fill Tool.
And with the Transparent Layer still the active Layer, left-click over your image to fill it with the Grey Foreground Colour.
From the top menu, choose Filters then choose Noise and then choose RGB Noise. And from the subsequent dialogue box, set the following (monochromatic) attributes, and then click OK.
Press Ctrl then F to repeat the Noise Filter.
Now, change the Grey Fill Layer’s Blend Mode from Normal to Lighten Only.
For personal blends, it’s important to experiment with different Blend Modes.
From the top menu, choose Filters then choose Noise and this time, choose Slur. And from the subsequent Slur dialogue box, set the following attributes, or experiment, and then click OK.
Snow Direction Note
You can give your snow direction by applying the Motion Blur Filter. (Filters, Blur then Motion Blur).
You can reduce the snow effect by lowering the Snow Layer’s Opacity.
Prior to Flattening your image, you may want to save it as an XCF File.
11/ Flatten Image
When you are happy with your work: from the top menu, choose Image and then choose Flatten Image.
To create extra impact, apply a Sharpening Filter of your choice - Filters then Enhance.
Congratulations, your Falling Snow Conversion is complete, and it is ready to save - top menu, then File then Save As.
Now you are more familiar with this technique, you can have lots of fun applying snow to your favourite images.
Wendi E. M. Scarth. Top of Page.