Blurring the background of an image can draw attention to a person or object in the foreground of the shot. The blurring is usually done while taking the photo with your camera, but it is also possible to add this effect during post-processing with an image editor such as GIMP. Using GIMP, you can define which area of your photo you want to remain in focus and then apply a blur effect to the background.
GIMP provides extensibility through integration with many programming languages including Scheme, Python, Perl, and more. The result is a high level of customization as demonstrated by the large number of scripts and plug-ins created by the community.
Step 1
Step 2
Click 'Open' and select the image with the background that you want to blur.
Step 3
Click 'Open' to load the image into the GIMP editor.
Step 4
Right-click the image name on the 'Layers' window and select 'Duplicate Layer' from the context menu. Double-click the layer name in the Layers window and type 'Background' (without quotation marks) as the layer name.
Step 5
Use the Free Select tool, Fuzzy Select tool or Paths tool to specify the area of the image that is the foreground.
Step 6
Press 'Ctrl-C' to copy the selected foreground area to the clipboard.
Step 7
Click 'Layers' from the menu bar and select 'New Layer.'
Step 8
Type 'Foreground' as the layer name and click 'OK.'
Step 9
Click 'Foreground' from the Layers window, and then press 'Ctrl-V' to paste the foreground image onto this layer.
Step 10
Select the 'Move' tool from the Toolbox and click any area outside the selected foreground area.
Step 11
Select the 'Background' layer from the Layers window and then select 'Filters' from the Menu bar.
Step 12
Click 'Blur' and select the type of blur you want to apply to the image background. Select 'Gaussian Blur' for a normal blur, 'Simple Blur' if you only want to soften the background, or 'Motion Blur' to create the illusion of motion in your blur.
Step 13
Adjust the blur settings for the chosen blur filter while checking the preview pane. For example, when using a Gaussian blur, you can adjust the horizontal and vertical blur radius; with a motion blur, you can set the angle and length.
Click 'OK' when you are satisfied with the blur effect to apply the filter to the background of your image.
Tip
- Select the 'Blur/Sharpen' tool from the Toolbox and apply it to the edges of the objects on your Foreground layer if the contrast between foreground and background is too high. The Blur/Sharpen tool enables you to soften the edges of objects for better blending.
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Transparency allows you to place images seamlessly on any background. It can save you time if you're adding an oddly shaped logo to your company brochure or website. You can use an image editor, such as Photoshop, Paint Shop Pro or Fireworks, to convert an image into a transparent one. It's important to save images in the correct format to preserve the transparency. A JPEG format removes an image's transparency, while a GIF or PNG format preserves it.
Step 1
Click 'File' and 'Open' from the menu and double-click the image you want to convert.
Step 2
Go to the 'Layers' palette and drag the layer containing the opaque image into the 'Create a new layer' icon to duplicate it.
Step 3
Pick the 'Magic Wand' tool from the toolbox. Go to the 'Magic Wand' properties or options bar and enter a tolerance level that works for your image.
Step 4
Click the areas of the image you want to make transparent and press the 'Delete' key to remove those areas.
Step 5
Click 'File' and 'Save As' from the menu. The 'Save As' dialog box will open.
Change the 'Format' option (in Photoshop) or 'Save as type' option (in Paint Shop Pro and Fireworks) to 'GIF' and click 'Save.'
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